{"id":16492,"date":"2025-09-11T11:59:19","date_gmt":"2025-09-11T09:59:19","guid":{"rendered":"https:\/\/voltmax.lu\/?p=16492"},"modified":"2025-09-11T12:18:29","modified_gmt":"2025-09-11T10:18:29","slug":"luxemburger-energiepass-der-vollstandige-leitfaden-2025","status":"publish","type":"post","link":"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/","title":{"rendered":"Luxemburger Energiepass \u2013 Der vollst\u00e4ndige Leitfaden (2025)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"16492\" class=\"elementor elementor-16492\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3950598 e-flex e-con-boxed e-con e-parent\" data-id=\"3950598\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-16eb18b elementor-widget elementor-widget-heading\" data-id=\"16eb18b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Energy_passport_in_Luxembourg_%E2%80%93_rules_types_costs\" >Energy passport in Luxembourg \u2013 rules, types, costs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#What_is_an_Energy_Passport_EPC\" >What is an Energy Passport (EPC)?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#When_is_it_required\" >When is it required?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Types_and_nomenclature_LuxEeB-H_and_LuxEeB-F\" >Types and nomenclature: LuxEeB-H and LuxEeB-F<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#What_does_the_Energy_passport_contain_and_how_to_read_the_classes\" >What does the Energy passport contain and how to read the classes?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Validity_Update_and_Exceptions\" >Validity, Update and Exceptions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Obtaining_process_%E2%80%93_step_by_step\" >Obtaining process \u2013 step by step<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Documents_and_data_%E2%80%93_a_practical_checklist\" >Documents and data \u2013 a practical checklist<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#The_most_common_mistakes_and_how_to_avoid_them\" >The most common mistakes and how to avoid them<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#New_building_how_to_design_high-class\" >New building: how to design high-class?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Non-residential_buildings_what_you_need_to_know\" >Non-residential buildings: what you need to know<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#How_to_improve_your_energy_efficiency_%E2%80%93_the_quickest_way_to_achieve_results\" >How to improve your energy efficiency \u2013 the quickest way to achieve results<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#How_to_improve_your_energy_efficiency_in_practice\" >How to improve your energy efficiency in practice<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#FAQ_%E2%80%93_Frequently_Asked_Questions_%E2%80%93_Frequently_Asked_Questions\" >FAQ \u2013 Frequently Asked Questions \u2013 Frequently Asked Questions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#How_long_is_an_Energy_passport_issued_for\" >How long is an Energy passport issued for?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Is_an_EPC_required_to_advertise_a_salelease\" >Is an EPC required to advertise a sale\/lease?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Whats_the_difference_between_a_%22permit-based%22_and_an_%22as-built%22_EPC\" >What&#039;s the difference between a &quot;permit-based&quot; and an &quot;as-built&quot; EPC?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#What_are_the_penalties_for_not_having_an_EPC\" >What are the penalties for not having an EPC?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Does_an_EPC_apply_to_units_in_multi-family_buildings\" >Does an EPC apply to units in multi-family buildings?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Are_the_cost_data_in_the_EPC_%22definitely%22_my_costs\" >Are the cost data in the EPC &quot;definitely&quot; my costs?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Will_photovoltaics_improve_my_energy_efficiency_class\" >Will photovoltaics improve my energy efficiency class?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#What_about_temporaryagricultural_buildings\" >What about temporary\/agricultural buildings?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Contact_us\" >Contact us<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"#\" data-href=\"https:\/\/voltmax.lu\/de\/luxembourg-energy-passport-the-complete-guide-2025\/#Take_the_first_step_Schedule_a_free_consultation\" >Take the first step: Schedule a free consultation<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Energy_passport_in_Luxembourg_%E2%80%93_rules_types_costs\"><\/span>Energy passport in Luxembourg \u2013 rules, types, costs<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1c2fc1b e-flex e-con-boxed e-con e-parent\" data-id=\"1c2fc1b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fe550d6 elementor-widget elementor-widget-text-editor\" data-id=\"fe550d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>The Most Important Thing in 30 Seconds<\/strong><\/p><ul><li>An Energy Passport (EPC) assesses a <strong>building&#8217;s energy performance<\/strong> and is <strong>mandatory<\/strong> for <strong>sales<\/strong>, <strong>rentals<\/strong>, and n<strong>ew investments<\/strong>, among other projects.<\/li><li>We distinguish categories for <strong>residential buildings (LuxEeB-H)<\/strong> and <strong>non-residential buildings (LuxEeB-F)<\/strong>; in both cases, there are passports for: <strong>existing<\/strong> buildings, new buildings (at the permitting stage), and <strong>as-built buildings<\/strong> (after construction).<\/li><li>Key indicators include <strong>energy efficiency class<\/strong>, <strong>thermal insulation class<\/strong>, and <strong>CO\u2082 emissions<\/strong> (A+ for best \u2192 I for worst).<\/li><li>The standard <strong>validity<\/strong> of the passport is <strong>10 years<\/strong> (earlier renewal recommended after significant renovations).<\/li><li>A well-prepared <strong>energy concept<\/strong> from the design stage allows for <strong>reduced construction costs<\/strong> and easier achievement of a high class.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b350e17 e-flex e-con-boxed e-con e-parent\" data-id=\"b350e17\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fb7f44f elementor-widget elementor-widget-heading\" data-id=\"fb7f44f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"What_is_an_Energy_Passport_EPC\"><\/span>What is an Energy Passport (EPC)?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-07ed35f e-flex e-con-boxed e-con e-parent\" data-id=\"07ed35f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b222e0a elementor-widget elementor-widget-text-editor\" data-id=\"b222e0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>An energy passport (energy performance card, <strong>EPC<\/strong>) is an <a href=\"https:\/\/guichet.public.lu\/en\/citoyens\/logement\/construction-renovation-transformation\/certificats-energiepass\/demande-passeport-energetique.html\" target=\"_blank\" rel=\"nofollow noopener\"><strong>official document<\/strong><\/a> that clearly presents a building&#8217;s <strong>energy performance<\/strong> and environmental impact. It allows for property <strong>comparisons<\/strong> in terms of energy consumption and CO\u2082 emissions and provides <strong>recommendations<\/strong> for efficiency improvement.<\/p><p>In Luxembourg, energy passports are available separately for:<\/p><ul><li><strong>residential buildings<\/strong> \u2013 where at least <strong>90%<\/strong> of the floor area is used for residential purposes (<strong>LuxEeB-H<\/strong>),<\/li><li><strong>non-residential<\/strong> (commercial) buildings \u2013 all other heated buildings (<strong>LuxEeB-F<\/strong>).<\/li><\/ul><p>EPCs increase the transparency of the real estate market: buyers and tenants can estimate operating costs and climate impact before the transaction.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dbcc89a e-flex e-con-boxed e-con e-parent\" data-id=\"dbcc89a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-82a550c elementor-widget elementor-widget-heading\" data-id=\"82a550c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"When_is_it_required\"><\/span>When is it required?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3da2496 e-flex e-con-boxed e-con e-parent\" data-id=\"3da2496\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-081b739 elementor-widget elementor-widget-text-editor\" data-id=\"081b739\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In Luxembourg, an energy passport is required in particular:<\/p><ul><li>for the <strong>sale<\/strong> and <strong>rental<\/strong> of existing residential and non-residential buildings,<\/li><li>for <strong>new buildings<\/strong> \u2013 at the building permit stage (concept\/notification) and after completion (as-built),<\/li><li>for <strong>renovations<\/strong> requiring a <strong>building permit<\/strong> or significant changes to the building&#8217;s installation\/envelope.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3eaac97 e-flex e-con-boxed e-con e-parent\" data-id=\"3eaac97\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c197266 elementor-alert-info elementor-widget elementor-widget-alert\" data-id=\"c197266\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"alert.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-alert\" role=\"alert\">\n\n\t\t\t\t\t\t<span class=\"elementor-alert-title\">Important<\/span>\n\t\t\t\n\t\t\t\t\t\t<span class=\"elementor-alert-description\">Key EPC indicators must be disclosed in sales documentation and rental advertisements. Failure to obtain a current passport may delay the transaction.<\/span>\n\t\t\t\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-34c9cbb e-flex e-con-boxed e-con e-parent\" data-id=\"34c9cbb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d3960fb elementor-widget elementor-widget-image\" data-id=\"d3960fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1300\" height=\"731\" src=\"https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-2.jpg\" class=\"attachment-full size-full wp-image-16498\" alt=\"Energy Passport (2)\" srcset=\"https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-2.jpg 1300w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-2-300x169.jpg 300w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-2-1024x576.jpg 1024w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-2-768x432.jpg 768w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-2-18x10.jpg 18w\" sizes=\"(max-width: 1300px) 100vw, 1300px\" title=\"\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78e74a8 elementor-widget elementor-widget-heading\" data-id=\"78e74a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Types_and_nomenclature_LuxEeB-H_and_LuxEeB-F\"><\/span>Types and nomenclature: LuxEeB-H and LuxEeB-F<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-25b17df e-flex e-con-boxed e-con e-parent\" data-id=\"25b17df\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a48f702 elementor-widget elementor-widget-text-editor\" data-id=\"a48f702\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Residential Buildings \u2013 LuxEeB-H<\/strong><\/p><ul><li>Existing Building (EPC for existing) \u2013 used for sale\/lease.<\/li><li>New Building (EPC for permit) \u2013 an appendix to the design documentation, verifying compliance with minimum and energy efficiency requirements.<\/li><li>As-built (after construction) \u2013 for completed projects; often required as proof for grant applications.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c29557b e-flex e-con-boxed e-con e-parent\" data-id=\"c29557b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-17261f1 elementor-widget elementor-widget-text-editor\" data-id=\"17261f1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Non-residential Buildings \u2013 LuxEeB-F<\/strong><\/p><ul><li>New, existing, and as-built \u2013 similar to residential buildings.<\/li><li>From 2023, functional (non-residential) passports will be issued exclusively using the demand (calculation) method. Previously issued documents remain valid, but new ones can no longer be issued using the old procedure.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-28a6953 e-flex e-con-boxed e-con e-parent\" data-id=\"28a6953\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e26d98e elementor-widget elementor-widget-heading\" data-id=\"e26d98e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"What_does_the_Energy_passport_contain_and_how_to_read_the_classes\"><\/span>What does the Energy passport contain and how to read the classes?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4e6d921 e-flex e-con-boxed e-con e-parent\" data-id=\"4e6d921\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4727272 elementor-widget elementor-widget-text-editor\" data-id=\"4727272\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A standard EPC for residential buildings assigns three key classes (e.g., A\/A\/A \u200b\u200bor F\/G\/F):<\/p><ol><li><strong>Energy efficiency \u2013<\/strong> the building&#8217;s primary energy consumption.<\/li><li><strong>Thermal insulation \u2013<\/strong> the quality of the thermal envelope (walls, roof, floor, windows, doors).<\/li><li><strong>Environmental impact \u2013<\/strong> CO\u2082 emissions related to operation.<\/li><\/ol><p>Rating scale: A+ (best) \u2192 I (weakest).<\/p><p><strong>Additionally, the document includes:<\/strong><\/p><ul><li>annual energy consumption and projected costs,<\/li><li>recommended modernizations with estimated impact on the class,<\/li><li>a summary of building and installation parameters.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-89a86ab e-flex e-con-boxed e-con e-parent\" data-id=\"89a86ab\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5f53e88 elementor-alert-info elementor-widget elementor-widget-alert\" data-id=\"5f53e88\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"alert.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-alert\" role=\"alert\">\n\n\t\t\t\t\t\t<span class=\"elementor-alert-title\">Practical tip:<\/span>\n\t\t\t\n\t\t\t\t\t\t<span class=\"elementor-alert-description\">An Energy passport (EPC) is typically 5 pages long and covers the entire building (not a single unit, unless it is a standalone building as defined by law). The standard validity period is 10 years.<\/span>\n\t\t\t\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-92df649 e-flex e-con-boxed e-con e-parent\" data-id=\"92df649\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a247da0 elementor-widget elementor-widget-heading\" data-id=\"a247da0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Validity_Update_and_Exceptions\"><\/span>Validity, Update and Exceptions<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-92418c7 e-flex e-con-boxed e-con e-parent\" data-id=\"92418c7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3208a78 elementor-widget elementor-widget-text-editor\" data-id=\"3208a78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>Validity<\/strong>: 10 years from the date of issue.<\/li><li><strong>Updating<\/strong>: Recommended earlier if significant modernizations have been carried out (e.g., insulation, replacement of joinery, new heating system, installation of photovoltaics, ventilation with heat recovery) \u2013 this would change the energy performance.<\/li><li><strong>Exemptions<\/strong>: Exemptions from the requirement may include agricultural buildings, open-air commercial buildings, temporary buildings, religious buildings, and buildings with an ERA &lt; 50 m\u00b2 or with dominant process energy.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3aab6d5 e-flex e-con-boxed e-con e-parent\" data-id=\"3aab6d5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d61530a elementor-widget elementor-widget-text-editor\" data-id=\"d61530a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Note for non-residential buildings:<\/strong> Energy consumption data <strong>must be updated<\/strong> upon building completion and <strong>periodically<\/strong> thereafter (as required for the specific building type). The EPC remains valid for 10 years.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-163532d e-flex e-con-boxed e-con e-parent\" data-id=\"163532d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8b8a18d elementor-widget elementor-widget-heading\" data-id=\"8b8a18d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Obtaining_process_%E2%80%93_step_by_step\"><\/span>Obtaining process \u2013 step by step<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1eca25d e-flex e-con-boxed e-con e-parent\" data-id=\"1eca25d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e6a6a9 elementor-widget elementor-widget-text-editor\" data-id=\"0e6a6a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li><strong>Determining the EPC type<\/strong> (residential\/non-residential; existing\/new\/as-built).<\/li><li><strong>Data collection:<\/strong> drawings, partition lists, window\/door specifications, installation description, test reports (e.g., blower doors), and renewable energy data (PV, collectors).<\/li><li><strong>Inventory and\/or on-site verification<\/strong> by a certified expert.<\/li><li><strong>Calculation model and simulations \u2013<\/strong> in accordance with appropriate methods (for non-residential buildings, including DIN V 18599).<\/li><li><strong>Report and conclusions \u2013<\/strong> classes, indicators, and modernization recommendations.<\/li><li><strong>Issuing the document \u2013<\/strong> \u200b\u200bEPC in a form compliant with regulations; forwarding to the owner\/investor.<\/li><\/ol><p><strong>Time and cost<\/strong> depend on the complexity of the facility, the completeness of the data, and the scope of the on-site inspection.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bccbfc4 e-flex e-con-boxed e-con e-parent\" data-id=\"bccbfc4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cb47882 elementor-widget elementor-widget-heading\" data-id=\"cb47882\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Documents_and_data_%E2%80%93_a_practical_checklist\"><\/span>Documents and data \u2013 a practical checklist<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-984734d e-flex e-con-boxed e-con e-parent\" data-id=\"984734d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cf28b4c elementor-widget elementor-widget-text-editor\" data-id=\"cf28b4c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>Floor plans and sections (current, with dimensions).<\/li><li>Enclosure list: wall, roof, and ceiling types, insulation (thickness, \u03bb), thermal bridges.<\/li><li>Joinery: windows\/doors with U-values, g-values, frames, thermal spacers, and installation.<\/li><li>Systems: heating (source, power, efficiency), domestic hot water, cooling, ventilation (recirculation, heat recovery), automation.<\/li><li>Renewable energy sources: photovoltaics (power, orientation, angle), thermal collectors, heat pump (ground source, SCOP).<\/li><li>Measurements\/tests: blower-door, system control protocols, pump\/unit characteristics.<\/li><li>Operational data (if required): meter readings, energy invoices.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d1142a8 e-flex e-con-boxed e-con e-parent\" data-id=\"d1142a8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc137ba elementor-widget elementor-widget-heading\" data-id=\"dc137ba\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"The_most_common_mistakes_and_how_to_avoid_them\"><\/span>The most common mistakes and how to avoid them<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cb63a40 e-flex e-con-boxed e-con e-parent\" data-id=\"cb63a40\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-75fb348 elementor-widget elementor-widget-text-editor\" data-id=\"75fb348\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><strong>Lack of consistent documentation \u2013<\/strong> correct any gaps before commissioning the EPC; this will speed up the process and reduce costs.<\/li><li><strong>Underestimating thermal bridges \u2013<\/strong> design the connection details (curtains, lintels, balconies) and their insulation.<\/li><li><strong>Windows without a solar control strategy \u2013<\/strong> too little winter gain or overheating in summer; consider shading (blinds, blinds).<\/li><li><strong>Ventilation without heat recovery in an airtight building \u2013<\/strong> increases losses and the risk of moisture.<\/li><li><strong>Selecting a heat source without a profile analysis \u2013<\/strong> suboptimal costs and emissions; consider heat pumps or a PV hybrid.<\/li><li><strong>&#8220;Final adjustment&#8221; \u2013<\/strong> think about the energy concept from the architectural concept, not the detailed design.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b430060 e-flex e-con-boxed e-con e-parent\" data-id=\"b430060\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ebd58f4 elementor-widget elementor-widget-image\" data-id=\"ebd58f4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"640\" height=\"360\" src=\"https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1024x576.jpg\" class=\"attachment-large size-large wp-image-16499\" alt=\"Energy Passport\" srcset=\"https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1024x576.jpg 1024w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-300x169.jpg 300w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-768x432.jpg 768w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-18x10.jpg 18w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1.jpg 1300w\" sizes=\"(max-width: 640px) 100vw, 640px\" title=\"\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6ddd5a elementor-widget elementor-widget-heading\" data-id=\"d6ddd5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"New_building_how_to_design_high-class\"><\/span>New building: how to design high-class?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3e4f277 e-flex e-con-boxed e-con e-parent\" data-id=\"3e4f277\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0cc428b elementor-widget elementor-widget-text-editor\" data-id=\"0cc428b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The following principles are based on certification practice and help achieve classes A\/A\/A \u200b\u200bor higher.<\/p><p><strong>1) Compactness of the Building Form<\/strong><\/p><p>The smaller the surface area of \u200b\u200bthe building envelope for the same cubic capacity, the lower the losses. Two-story and terraced houses usually perform better than sprawling single-story or detached houses with a fragmented form.<\/p><p><strong>2) Thermal Enclosure and Airtightness<\/strong><\/p><p>Design building envelopes with uniform, high insulation (low U-value) and analyze thermal bridges. Plan for layer continuity and the installation of joinery within the insulation layer. Confirm airtightness with a blower-door test.<\/p><p><strong>3) Orientation and Glazing<\/strong><\/p><p>Orient living areas to the south\/southwest\/southeast. Maximize the glazing ratio relative to the frame, maintain a high g-value (for winter gains) and provide shade in summer.<\/p><p><strong>4) Construction and Thermal Mass<\/strong><\/p><p>Choosing the technology (masonry, prefabricated, wood) to meet the insulation, airtightness, and heat storage requirements. Each has advantages and disadvantages; every detail counts.<\/p><p><strong>5) Renewable Energy Sources (RES)<\/strong><\/p><ul><li>PV to power appliances and cover part of the heating\/cooling demand.<\/li><li>Heat pumps (air, ground, exhaust air) as a high-efficiency source.<\/li><li>Solar thermal energy for domestic hot water\/heating support.<\/li><li>Automation and energy storage \u2013 higher self-consumption and stability.<\/li><\/ul><p><strong>6) Comfort Ventilation System<\/strong><\/p><p>In airtight buildings, mechanical ventilation with heat recovery minimizes losses and improves air quality; it is essential for constant, controlled air exchange.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2cce6c0 e-flex e-con-boxed e-con e-parent\" data-id=\"2cce6c0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d017573 elementor-widget elementor-widget-heading\" data-id=\"d017573\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Non-residential_buildings_what_you_need_to_know\"><\/span>Non-residential buildings: what you need to know<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f5e6324 e-flex e-con-boxed e-con e-parent\" data-id=\"f5e6324\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0cbc241 elementor-widget elementor-widget-text-editor\" data-id=\"0cbc241\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>DIN V 18599<\/strong> (heating, cooling, ventilation, domestic hot water, and lighting) is widely used for performance calculations.<\/p><p>An <strong>EPC<\/strong> is required for: office buildings, commercial buildings, restaurants, schools, preschools\/nurseries, sports halls, hotels, swimming pools\/saunas\/wellness centers, and mixed-use buildings (if less than 90% of the area is residential).<\/p><p><strong>Validity:<\/strong> 10 years as standard; periodic updates of energy consumption data are recommended, in accordance with the requirements for the specific building type.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b4361c6 e-flex e-con-boxed e-con e-parent\" data-id=\"b4361c6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5164409 elementor-widget elementor-widget-heading\" data-id=\"5164409\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"How_to_improve_your_energy_efficiency_%E2%80%93_the_quickest_way_to_achieve_results\"><\/span>How to improve your energy efficiency \u2013 the quickest way to achieve results<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5130ce6 e-flex e-con-boxed e-con e-parent\" data-id=\"5130ce6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c83af6b elementor-widget elementor-widget-text-editor\" data-id=\"c83af6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Quick wins (often without heavy work):<\/p><ul><li>System adjustments and hydraulic balancing.<\/li><li>Leak sealing, bridge <a href=\"https:\/\/voltmax.lu\/insulation\/\">insulation<\/a> (e.g., balcony slab).<\/li><li>Window thermal modernization (glazing units, seals, installation in the insulation layer).<\/li><li>Heat recovery in airtight buildings.<\/li><li>PV + heat pump instead of a hydrocarbon boiler (power analysis and SCOP).<\/li><li>Control and automation (zone thermostats, schedules, BMS).<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d62c6d3 e-flex e-con-boxed e-con e-parent\" data-id=\"d62c6d3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a6ebd03 elementor-widget elementor-widget-text-editor\" data-id=\"a6ebd03\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table class=\" aligncenter\" style=\"font-size: 16px;\"><tbody><tr><th>Action<\/th><th>Typical effect on EPC\/consumption<\/th><th>Approximate cost<\/th><th>Difficulty<\/th><th>Time<\/th><\/tr><tr><td>Regulation of installation and hydraulic balancing<\/td><td>-5\u201315% energy, sometimes +1 subclass<\/td><td>400\u20131\u202f500 \u20ac<\/td><td>low<\/td><td>1 day<\/td><\/tr><tr><td>Sealing + limiting thermal bridges (local)<\/td><td>better tightness, fewer point losses<\/td><td>300\u20132\u202f000 \u20ac<\/td><td>low\u2013medium<\/td><td>1\u20132 days\/area<\/td><\/tr><tr><td>Micro-thermal modernisation of joinery (seals, adjustments, warm frames, replacement of glass in frames)<\/td><td>\u22125\u201320% losses through windows; improved comfort<\/td><td>\u20ac150\u2013600 \/ window (seals\/adjustment) \u20ac300\u20131200 \/ sash (glazing)<\/td><td>average<\/td><td>0.5\u20131 day<\/td><\/tr><tr><td>Heat recovery ventilation (ventilation with heat recovery)<\/td><td>\u221215\u201330% of heating energy, higher comfort<\/td><td>6\u202f000\u201315\u202f000 \u20ac<\/td><td>medium-high<\/td><td>2\u20135 days<\/td><\/tr><tr><td>PV + heat pump (RES package)<\/td><td>large improvement in primary energy\/CO\u2082; often +1\u20132 class<\/td><td>PV 8-12 thousand \u20ac (approx. 6 kWp) \u00b7 PC 12\u201325 thousand \u20ac<\/td><td>high<\/td><td>3\u20137 days<\/td><\/tr><tr><td>Automation and control (zone thermostats, schedules, BMS light)<\/td><td>-5\u201315% energy; better control<\/td><td>\u20ac200\u20131500 house \u20ac1000\u20135000 small property<\/td><td>low<\/td><td>0.5\u20132 days<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54d04f1 elementor-widget elementor-widget-image\" data-id=\"54d04f1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1300\" height=\"731\" src=\"https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1.jpg\" class=\"attachment-full size-full wp-image-16500\" alt=\"Energy Passport (1)\" srcset=\"https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1.jpg 1300w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1-300x169.jpg 300w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1-1024x576.jpg 1024w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1-768x432.jpg 768w, https:\/\/voltmax.lu\/wp-content\/uploads\/2025\/09\/Energy-Passport-1-1-18x10.jpg 18w\" sizes=\"(max-width: 1300px) 100vw, 1300px\" title=\"\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0f8d2b8 e-flex e-con-boxed e-con e-parent\" data-id=\"0f8d2b8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f1d8a9 elementor-widget elementor-widget-heading\" data-id=\"2f1d8a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"How_to_improve_your_energy_efficiency_in_practice\"><\/span>How to improve your energy efficiency in practice<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-db6cee0 elementor-widget elementor-widget-text-editor\" data-id=\"db6cee0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ol><li><strong>Hydraulic Control and Balancing:<\/strong> <br \/>What it involves: setting flows and temperatures, throttling oversized radiators\/loops, calibrating the heating curve. When it&#8217;s worth it: radiators heat unevenly, overheating of some rooms, high return. What to watch out for: missing radiator valves, dirt in the system \u2013 flush\/filter first.<\/li><li><strong>Sealing and Point Bridges:<br \/><\/strong> What it involves: sealing installation penetrations, reveals, roller shutter boxes; insulating the balcony slab, tie beams, and lintels. When it&#8217;s worth it: noticeable drafts, dampness at corners. What to watch out for: do not impair natural ventilation in leaky buildings \u2013 consider air vents or heat recovery.<\/li><li><strong>Micro-Modernization of Joinery:<\/strong> <br \/>What it involves: replacing\/sealing seals, adjusting fittings, warm edge spacers; Where possible, replace only the glass with low-emissivity glass in the existing frames. When is it worth it: relatively new windows, but they are &#8220;breezy&#8221;\/fogging; no budget for a full replacement. What to look for: correct installation (in the insulation layer), bridges on the window sills.<\/li><li><strong>Heat Recovery What is it:<\/strong> <br \/>mechanical ventilation with heat recovery (75\u201390% efficiency). When is it worth it: the building is already airtight or planned to be airtight; moisture\/CO\u2082 problems. What is it worth: duct routing design, acoustics, regular filter replacement.<\/li><li><strong><a href=\"https:\/\/voltmax.lu\/photovoltaics-for-home\/\">PV<\/a> + <a href=\"https:\/\/voltmax.lu\/heat-pump\/\">Heat Pump<\/a> What is it:<\/strong> <br \/>generating electricity from PV and using it to power a heat pump for heating\/DHW. When is it worth it: replacing an old boiler, roof availability, cost-effective tariff; desire to improve primary energy efficiency and CO\u2082 emissions. What to look for: power selection (SCOP, bivalence), storage tank, space for an outdoor unit; check available subsidies.<\/li><li><strong>Automation and Control:<\/strong> <br \/>What it involves: zone thermostats\/programmable thermostats, schedules, weather curves, occupancy sensors\/open windows; in small buildings \u2013 a simple BMS. When it&#8217;s worth it: a building heated &#8220;constantly,&#8221; no zoning, irregular use. What to watch out for: overly aggressive schedules = discomfort; introduce hyseresis and exceptions.<\/li><\/ol><p><strong>Mini-wins that often pay off the fastest:<\/strong><\/p><ul><li>lowering the domestic hot water temperature (while maintaining hygiene), circulation timers,<\/li><li>insulating pipes in unheated spaces,<\/li><li>aerators and faucet aerators,<\/li><li>optimizing heat source settings (curve, supply\/return temperatures).<\/li><\/ul><p><strong>Tip:<\/strong> Combine actions (e.g., seals + heat recovery + automation). Synergy usually provides a class-leading improvement greater than the sum of the individual effects.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-56fc998 e-flex e-con-boxed e-con e-parent\" data-id=\"56fc998\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bf7eb9f elementor-widget elementor-widget-heading\" data-id=\"bf7eb9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"FAQ_%E2%80%93_Frequently_Asked_Questions_%E2%80%93_Frequently_Asked_Questions\"><\/span>FAQ \u2013 Frequently Asked Questions \u2013 Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-625fe35 elementor-widget elementor-widget-elementskit-faq\" data-id=\"625fe35\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-faq.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" >\n                <div class=\"elementskit-single-faq elementor-repeater-item-9ec7578\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"How_long_is_an_Energy_passport_issued_for\"><\/span>How long is an Energy passport issued for?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Typically, it's valid for 10 years. After a significant renovation, it's worth updating it sooner.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-464fc37\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"Is_an_EPC_required_to_advertise_a_salelease\"><\/span>Is an EPC required to advertise a sale\/lease?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Yes \u2013 key indicators should be disclosed in marketing materials.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-4362f33\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"Whats_the_difference_between_a_%22permit-based%22_and_an_%22as-built%22_EPC\"><\/span>What&#039;s the difference between a &quot;permit-based&quot; and an &quot;as-built&quot; EPC?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                The former is created at the design stage and confirms compliance with requirements; the latter applies to a completed building and may be a condition of subsidy.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-eeb946c\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"What_are_the_penalties_for_not_having_an_EPC\"><\/span>What are the penalties for not having an EPC?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Regardless of the penalties, the lack of a document can block a transaction or delay commissioning. Place your order in advance.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-e9bb804\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"Does_an_EPC_apply_to_units_in_multi-family_buildings\"><\/span>Does an EPC apply to units in multi-family buildings?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Generally, an EPC is issued for the entire building. Units are subject to separate rules only in specific cases.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-5fc081c\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"Are_the_cost_data_in_the_EPC_%22definitely%22_my_costs\"><\/span>Are the cost data in the EPC &quot;definitely&quot; my costs?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                These are estimates based on assumptions and standard profiles; actual bills depend on usage and energy tariffs.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-0ddfcf8\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"Will_photovoltaics_improve_my_energy_efficiency_class\"><\/span>Will photovoltaics improve my energy efficiency class?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Usually yes, especially when combined with a heat pump and heat recovery \u2013 this affects primary energy and emissions.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-ca647d5\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\"><span class=\"ez-toc-section\" id=\"What_about_temporaryagricultural_buildings\"><\/span>What about temporary\/agricultural buildings?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Many such structures are exempt from the requirement \u2013 \u200b\u200bcheck the qualification before commissioning an EPC.            <\/div>\n        <\/div>\n                                <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"How long is an Energy passport issued for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Typically, it's valid for 10 years. After a significant renovation, it's worth updating it sooner.\"}},{\"@type\":\"Question\",\"name\":\"Is an EPC required to advertise a sale\/lease?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes \u2013 key indicators should be disclosed in marketing materials.\"}},{\"@type\":\"Question\",\"name\":\"What&#039;s the difference between a &quot;permit-based&quot; and an &quot;as-built&quot; EPC?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The former is created at the design stage and confirms compliance with requirements; the latter applies to a completed building and may be a condition of subsidy.\"}},{\"@type\":\"Question\",\"name\":\"What are the penalties for not having an EPC?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Regardless of the penalties, the lack of a document can block a transaction or delay commissioning. Place your order in advance.\"}},{\"@type\":\"Question\",\"name\":\"Does an EPC apply to units in multi-family buildings?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Generally, an EPC is issued for the entire building. Units are subject to separate rules only in specific cases.\"}},{\"@type\":\"Question\",\"name\":\"Are the cost data in the EPC &quot;definitely&quot; my costs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These are estimates based on assumptions and standard profiles; actual bills depend on usage and energy tariffs.\"}},{\"@type\":\"Question\",\"name\":\"Will photovoltaics improve my energy efficiency class?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Usually yes, especially when combined with a heat pump and heat recovery \u2013 this affects primary energy and emissions.\"}},{\"@type\":\"Question\",\"name\":\"What about temporary\/agricultural buildings?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Many such structures are exempt from the requirement \u2013 \u200b\u200bcheck the qualification before commissioning an EPC.\"}}]}<\/script>\n                \n    <\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a199997 e-flex e-con-boxed e-con e-parent\" data-id=\"a199997\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5a8631d elementor-widget elementor-widget-heading\" data-id=\"5a8631d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Contact_us\"><\/span>Contact us<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-17456ec e-flex e-con-boxed e-con e-parent\" data-id=\"17456ec\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c7a5f3b elementor-widget elementor-widget-text-editor\" data-id=\"c7a5f3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>We are <strong>Voltmax<\/strong> \u2013 we specialize in <strong>photovoltaic installations<\/strong> for homes, communities, and businesses in Luxembourg (including PV carports and EV chargers). We work with certified energy auditors \u2013 we will help you:<\/p><ul><li>compile EPC documentation,<\/li><li>plan upgrades to upgrade your energy class,<\/li><li>design and install PV\/heat pumps for real cost and emission reductions.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b62633f e-flex e-con-boxed e-con e-parent\" data-id=\"b62633f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6017435 elementor-widget elementor-widget-heading\" data-id=\"6017435\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Take_the_first_step_Schedule_a_free_consultation\"><\/span>Take the first step: Schedule a free consultation<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64eba56 ekit_wpForms_container-form-button-custom elementor-widget elementor-widget-elementskit-wp-forms\" data-id=\"64eba56\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-wp-forms.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"ekit-wid-con ekit_wpForms_container\"><style id=\"wpforms-css-vars-16001\">\n\t\t\t\t#wpforms-16001 {\n\t\t\t\t--wpforms-field-border-color: #cbc6c2;\n--wpforms-field-border-color-spare: #cbc6c2;\n--wpforms-field-text-color: #3d3835;\n--wpforms-label-color: #3d3835;\n--wpforms-label-sublabel-color: #79716b;\n--wpforms-label-error-color: #d63636;\n--wpforms-button-background-color: #e27730;\n--wpforms-button-border-color: #ff4500;\n--wpforms-button-text-color: #fcf1ea;\n--wpforms-container-border-radius: 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data-field-id=\"1\"><fieldset><legend class=\"wpforms-field-label\">Name <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/legend><div class=\"wpforms-field-row wpforms-field-medium\"><div class=\"wpforms-field-row-block wpforms-first wpforms-one-half\"><input type=\"text\" id=\"wpforms-16001-field_1\" class=\"wpforms-field-name-first wpforms-field-required\" name=\"wpforms[fields][1][first]\" aria-errormessage=\"wpforms-16001-field_1-error\" required><label for=\"wpforms-16001-field_1\" class=\"wpforms-field-sublabel after\">Vorname<\/label><\/div><div class=\"wpforms-field-row-block wpforms-one-half\"><input type=\"text\" id=\"wpforms-16001-field_1-last\" class=\"wpforms-field-name-last wpforms-field-required\" name=\"wpforms[fields][1][last]\" aria-errormessage=\"wpforms-16001-field_1-last-error\" required><label for=\"wpforms-16001-field_1-last\" class=\"wpforms-field-sublabel after\">Nachname<\/label><\/div><\/div><\/fieldset><\/div><div 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class=\"wpforms-field-label\" for=\"wpforms-16001-field_3\">Write what you are interested in<\/label><textarea id=\"wpforms-16001-field_3\" class=\"wpforms-field-medium\" name=\"wpforms[fields][3]\" aria-errormessage=\"wpforms-16001-field_3-error\" ><\/textarea><\/div><div id=\"wpforms-16001-field_5-container\" class=\"wpforms-field wpforms-field-checkbox\" data-field-id=\"5\"><fieldset><legend class=\"wpforms-field-label\">Consents: <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/legend><ul id=\"wpforms-16001-field_5\" class=\"wpforms-field-required\"><li class=\"choice-1 depth-1\"><input type=\"checkbox\" id=\"wpforms-16001-field_5_1\" name=\"wpforms[fields][5][]\" value=\"I agree to be contacted by phone and e-mail from Voltmax.\" aria-errormessage=\"wpforms-16001-field_5_1-error\" required ><label class=\"wpforms-field-label-inline\" for=\"wpforms-16001-field_5_1\">I agree to be contacted by phone and e-mail from Voltmax.<\/label><\/li><li class=\"choice-2 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Wer ben\u00f6tigt ihn, welche Typen gibt es (LuxEeB-H\/F), G\u00fcltigkeit, Verfahren und wie Sie Ihre Bewertung verbessern k\u00f6nnen. 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