{"id":18591,"date":"2026-02-17T14:11:52","date_gmt":"2026-02-17T13:11:52","guid":{"rendered":"https:\/\/voltmax.lu\/?page_id=18591"},"modified":"2026-02-17T15:33:53","modified_gmt":"2026-02-17T14:33:53","slug":"klimabonus-551-air-to-water-heat-pump","status":"publish","type":"page","link":"https:\/\/voltmax.lu\/fr\/klimabonus-551-air-to-water-heat-pump\/","title":{"rendered":"Klimabonus 551 Air-to-water heat pump"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"18591\" class=\"elementor elementor-18591\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3409695 e-flex e-con-boxed e-con e-parent\" data-id=\"3409695\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3520da6 elementor-widget elementor-widget-spacer\" data-id=\"3520da6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e696a79 elementor-widget elementor-widget-heading\" data-id=\"e696a79\" 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\">Klimabonus 551<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e684b6e elementor-widget elementor-widget-heading\" data-id=\"e684b6e\" 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<h1 class=\"elementor-heading-title elementor-size-default\">Air-to-water heat pump<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-184116e elementor-widget elementor-widget-spacer\" data-id=\"184116e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\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-4664adc e-flex e-con-boxed e-con e-parent\" data-id=\"4664adc\" 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-ab41c63 elementor-widget elementor-widget-spacer\" data-id=\"ab41c63\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3de285 elementor-widget elementor-widget-heading\" data-id=\"d3de285\" 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\">What is Klimabonus 551?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-017f3ae elementor-widget elementor-widget-text-editor\" data-id=\"017f3ae\" 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 data-start=\"385\" data-end=\"525\">Klimabonus 551 is a public subsidy scheme in Luxembourg supporting the installation of <strong data-start=\"472\" data-end=\"499\">air-to-water heat pumps<\/strong> in residential buildings.<\/p><p data-start=\"527\" data-end=\"736\">An air-to-water heat pump uses energy from the <strong data-start=\"574\" data-end=\"589\">ambient air<\/strong> to provide heating for the building. It is a renewable heating solution that helps reduce fossil fuel consumption and supports climate protection.<\/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-72daa4c e-flex e-con-boxed e-con e-parent\" data-id=\"72daa4c\" 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-7bc0f09 elementor-widget elementor-widget-heading\" data-id=\"7bc0f09\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Technical requirements for air-to-water heat pumps<\/h3>\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-f2d08fe e-flex e-con-boxed e-con e-parent\" data-id=\"f2d08fe\" 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-f235f13 elementor-widget elementor-widget-text-editor\" data-id=\"f235f13\" 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 data-start=\"798\" data-end=\"897\">To be eligible for Klimabonus 551, the installation must meet the following technical requirements:<\/p><h3 data-start=\"899\" data-end=\"933\">General technical requirements<\/h3><ul data-start=\"934\" data-end=\"1151\"><li data-start=\"934\" data-end=\"999\"><p data-start=\"936\" data-end=\"999\"><strong data-start=\"936\" data-end=\"959\">Hydraulic balancing<\/strong> must be carried out after installation.<\/p><\/li><li data-start=\"1000\" data-end=\"1151\"><p data-start=\"1002\" data-end=\"1018\">Installation of:<\/p><ul data-start=\"1021\" data-end=\"1151\"><li data-start=\"1021\" data-end=\"1088\"><p data-start=\"1023\" data-end=\"1088\">a <strong data-start=\"1025\" data-end=\"1069\">separate or integrated electricity meter<\/strong> for the heat pump,<\/p><\/li><li data-start=\"1091\" data-end=\"1151\"><p data-start=\"1093\" data-end=\"1151\">a <strong data-start=\"1095\" data-end=\"1132\">separate or integrated heat meter<\/strong> for the heat pump.<\/p><\/li><\/ul><\/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-ed9a106 e-flex e-con-boxed e-con e-parent\" data-id=\"ed9a106\" 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-b5f5ad8 elementor-widget elementor-widget-heading\" data-id=\"b5f5ad8\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Additional requirements for existing buildings<\/h3>\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-1e677c8 e-flex e-con-boxed e-con e-parent\" data-id=\"1e677c8\" 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-2cc22b6 elementor-widget elementor-widget-text-editor\" data-id=\"2cc22b6\" 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 data-start=\"1209\" data-end=\"1325\"><p data-start=\"1211\" data-end=\"1325\">Installation of a <strong data-start=\"1229\" data-end=\"1253\">buffer tank (boiler)<\/strong> with a minimum capacity of<br data-start=\"1280\" data-end=\"1283\" \/><strong data-start=\"1285\" data-end=\"1324\">30 litres per kWth of heating power<\/strong>.<\/p><\/li><li data-start=\"1326\" data-end=\"1464\"><p data-start=\"1328\" data-end=\"1464\">This requirement does <strong data-start=\"1350\" data-end=\"1363\">not apply<\/strong> to heat pumps equipped with a <strong data-start=\"1394\" data-end=\"1428\">frequency converter (inverter)<\/strong> allowing speed or power modulation.<\/p><\/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-bbe4bfc e-flex e-con-boxed e-con e-parent\" data-id=\"bbe4bfc\" 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-c3af584 elementor-widget elementor-widget-heading\" data-id=\"c3af584\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Performance requirements<\/h3>\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-29efe96 e-flex e-con-boxed e-con e-parent\" data-id=\"29efe96\" 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-0f71e92 elementor-widget elementor-widget-text-editor\" data-id=\"0f71e92\" 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 data-start=\"1537\" data-end=\"1917\"><li data-start=\"1537\" data-end=\"1592\"><p data-start=\"1500\" data-end=\"1620\">The heat pump must meet the following <strong data-start=\"1538\" data-end=\"1574\">coefficient of performance (COP)<\/strong> requirements in accordance with <strong data-start=\"1607\" data-end=\"1619\">EN 14511<\/strong>:<\/p><ul data-start=\"1622\" data-end=\"1714\"><li data-start=\"1622\" data-end=\"1714\"><p data-start=\"1624\" data-end=\"1714\"><strong data-start=\"1624\" data-end=\"1686\">Air-to-water heat pump (including exhaust air heat pumps):<\/strong><br data-start=\"1686\" data-end=\"1689\" \/><strong data-start=\"1691\" data-end=\"1714\">COP \u2265 3.1 at A7\/W35<\/strong><\/p><\/li><\/ul><\/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-3586a68 e-flex e-con-boxed e-con e-parent\" data-id=\"3586a68\" 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-c3d516c elementor-widget elementor-widget-heading\" data-id=\"c3d516c\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Noise level requirements<\/h3>\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-084b086 e-flex e-con-boxed e-con e-parent\" data-id=\"084b086\" 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-c005c09 elementor-widget elementor-widget-text-editor\" data-id=\"c005c09\" 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 data-start=\"2697\" data-end=\"2799\"><ul data-start=\"2146\" data-end=\"2670\"><li data-start=\"2146\" data-end=\"2201\"><p data-start=\"1750\" data-end=\"1869\">The <strong data-start=\"1754\" data-end=\"1780\">sound power level (Lw)<\/strong> of the external unit must comply with the following limits (according to the ErP label):<\/p><ul data-start=\"1871\" data-end=\"1979\"><li data-start=\"1871\" data-end=\"1902\"><p data-start=\"1873\" data-end=\"1902\"><strong data-start=\"1873\" data-end=\"1884\">\u2264 5 kW:<\/strong> max. <strong data-start=\"1890\" data-end=\"1902\">48 dB(A)<\/strong><\/p><\/li><li data-start=\"1903\" data-end=\"1946\"><p data-start=\"1905\" data-end=\"1946\"><strong data-start=\"1905\" data-end=\"1928\">&gt; 5 kW and \u2264 12 kW:<\/strong> max. <strong data-start=\"1934\" data-end=\"1946\">51 dB(A)<\/strong><\/p><\/li><li data-start=\"1947\" data-end=\"1979\"><p data-start=\"1949\" data-end=\"1979\"><strong data-start=\"1949\" data-end=\"1961\">&gt; 12 kW:<\/strong> max. <strong data-start=\"1967\" data-end=\"1979\">55 dB(A)<\/strong><\/p><\/li><\/ul><p data-start=\"1981\" data-end=\"2131\">If the external unit exceeds these limits, the measured value may be reduced by installing <strong data-start=\"2072\" data-end=\"2130\">additional soundproofing or noise protection equipment<\/strong>.<\/p><p data-start=\"2133\" data-end=\"2186\">Alternatively, if the sound power limits are not met:<\/p><ul data-start=\"2187\" data-end=\"2454\"><li data-start=\"2187\" data-end=\"2279\"><p data-start=\"2189\" data-end=\"2279\">the noise level at the <strong data-start=\"2212\" data-end=\"2278\">boundary of the nearest building land must not exceed 40 dB(A)<\/strong>,<\/p><\/li><li data-start=\"2280\" data-end=\"2391\"><p data-start=\"2282\" data-end=\"2391\">compliance must be proven by an <strong data-start=\"2314\" data-end=\"2337\">acoustic assessment<\/strong> based on a calculation tool provided by the Ministry,<\/p><\/li><li data-start=\"2392\" data-end=\"2454\"><p data-start=\"2394\" data-end=\"2454\">this assessment must be carried out <strong data-start=\"2430\" data-end=\"2453\">before installation<\/strong>.<\/p><\/li><\/ul><\/li><\/ul><\/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-3e8ef0b e-flex e-con-boxed e-con e-parent\" data-id=\"3e8ef0b\" 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-26efc3a elementor-widget elementor-widget-heading\" data-id=\"26efc3a\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Requirements for new buildings<\/h3>\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-24a3b1a e-flex e-con-boxed e-con e-parent\" data-id=\"24a3b1a\" 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-492f6e1 elementor-widget elementor-widget-text-editor\" data-id=\"492f6e1\" 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 data-start=\"2496\" data-end=\"2514\">For new buildings:<\/p><ul data-start=\"2515\" data-end=\"2746\"><li data-start=\"2515\" data-end=\"2633\"><p data-start=\"2517\" data-end=\"2633\">the heating system must be designed to supply the heating circuit with a <strong data-start=\"2590\" data-end=\"2632\">maximum flow temperature of 35\u00b0C (W35)<\/strong>.<\/p><\/li><li data-start=\"2634\" data-end=\"2746\"><p data-start=\"2636\" data-end=\"2746\">If this is not possible, the heat pump must still achieve <strong data-start=\"2694\" data-end=\"2707\">COP \u2265 3.1<\/strong> at the selected operating temperature.<\/p><\/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-4c59f07 e-flex e-con-boxed e-con e-parent\" data-id=\"4c59f07\" 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-a1c1723 elementor-widget elementor-widget-heading\" data-id=\"a1c1723\" 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<h3 class=\"elementor-heading-title elementor-size-default\">Hybrid systems<\/h3>\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-f415b3c e-flex e-con-boxed e-con e-parent\" data-id=\"f415b3c\" 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-2a5e926 elementor-widget elementor-widget-text-editor\" data-id=\"2a5e926\" 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 data-start=\"2772\" data-end=\"2806\">For <strong data-start=\"2776\" data-end=\"2805\">non-fossil hybrid systems<\/strong>:<\/p><ul data-start=\"2807\" data-end=\"2885\"><li data-start=\"2807\" data-end=\"2885\"><p data-start=\"2809\" data-end=\"2885\">at least <strong data-start=\"2818\" data-end=\"2851\">70% of the annual heat demand<\/strong> must be covered by the heat pump.<\/p><\/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-569ac6d e-flex e-con-boxed e-con e-parent\" data-id=\"569ac6d\" 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-1ed0874 elementor-widget elementor-widget-heading\" data-id=\"1ed0874\" 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<h4 class=\"elementor-heading-title elementor-size-default\">Conditions for receiving the subsidy<\/h4>\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-0a3d917 e-flex e-con-boxed e-con e-parent\" data-id=\"0a3d917\" 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-2b796c1 elementor-widget elementor-widget-text-editor\" data-id=\"2b796c1\" 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 data-start=\"3717\" data-end=\"3884\"><li data-start=\"3717\" data-end=\"3800\"><p data-start=\"2933\" data-end=\"2991\">To receive Klimabonus 551, the following conditions apply:<\/p><ul data-start=\"2993\" data-end=\"3469\"><li data-start=\"2993\" data-end=\"3074\"><p data-start=\"2995\" data-end=\"3074\">The subsidy is available <strong data-start=\"3020\" data-end=\"3073\">only for heating systems in residential buildings<\/strong>.<\/p><\/li><li data-start=\"3075\" data-end=\"3238\"><p data-start=\"3077\" data-end=\"3148\">Only <strong data-start=\"3082\" data-end=\"3104\">one heating system<\/strong> can be subsidised per residential building:<\/p><ul data-start=\"3151\" data-end=\"3238\"><li data-start=\"3151\" data-end=\"3170\"><p data-start=\"3153\" data-end=\"3170\">heat pump, <strong data-start=\"3164\" data-end=\"3170\">or<\/strong><\/p><\/li><li data-start=\"3173\" data-end=\"3202\"><p data-start=\"3175\" data-end=\"3202\">wood heating system, <strong data-start=\"3196\" data-end=\"3202\">or<\/strong><\/p><\/li><li data-start=\"3205\" data-end=\"3238\"><p data-start=\"3207\" data-end=\"3238\">connection to district heating.<\/p><\/li><\/ul><\/li><li data-start=\"3239\" data-end=\"3362\"><p data-start=\"3241\" data-end=\"3362\"><strong data-start=\"3241\" data-end=\"3261\">No state subsidy<\/strong> must have been requested for a technical installation under the <strong data-start=\"3326\" data-end=\"3361\">2016 or 2022 subsidy programmes<\/strong>.<\/p><\/li><li data-start=\"3363\" data-end=\"3469\"><p data-start=\"3365\" data-end=\"3469\">In the case of a <strong data-start=\"3382\" data-end=\"3399\">hybrid system<\/strong>, the heat pump must cover at least <strong data-start=\"3435\" data-end=\"3468\">70% of the annual heat demand<\/strong>.<\/p><\/li><\/ul><\/li><\/ul>\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-b941807 elementor-widget elementor-widget-heading\" data-id=\"b941807\" 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\">How to apply for Klimabonus 551<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f326b93 elementor-widget elementor-widget-text-editor\" data-id=\"f326b93\" 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 data-start=\"3512\" data-end=\"3601\"><li data-start=\"3512\" data-end=\"3601\"><p data-start=\"3514\" data-end=\"3601\">The <strong data-start=\"3518\" data-end=\"3600\">subsidy application can be submitted after the installation has been completed<\/strong>.<\/p><\/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-d8a769d e-flex e-con-boxed e-con e-parent\" data-id=\"d8a769d\" 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-31ecde0 elementor-widget elementor-widget-heading\" data-id=\"31ecde0\" 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\">Social Top-Up Klimabonus<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1fd7b81 elementor-widget elementor-widget-text-editor\" data-id=\"1fd7b81\" 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 data-start=\"3637\" data-end=\"3760\">Eligible households may apply for a <strong data-start=\"3673\" data-end=\"3698\">social top-up subsidy<\/strong> after receiving the decision granting the Klimabonus subsidy.<\/p><p data-start=\"3762\" data-end=\"3796\">Applications must be submitted to:<\/p><p data-start=\"3798\" data-end=\"3968\"><strong data-start=\"3798\" data-end=\"3848\">Single Point of Contact for Housing Assistance<\/strong><br data-start=\"3848\" data-end=\"3851\" \/>11, rue de Hollerich<br data-start=\"3871\" data-end=\"3874\" \/>L-1741 Luxembourg<br data-start=\"3891\" data-end=\"3894\" \/>Grand Duchy of Luxembourg<br data-start=\"3919\" data-end=\"3922\" \/>\ud83d\udce7 <a class=\"decorated-link cursor-pointer\" rel=\"noopener\" data-start=\"3925\" data-end=\"3943\">guichet@ml.etat.lu<\/a><br data-start=\"3943\" data-end=\"3946\" \/>\ud83d\udcde (+352) 8002 10 10<\/p>\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-63874f7 elementor-widget elementor-widget-heading\" data-id=\"63874f7\" 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\">Required application forms<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c579e25 elementor-widget elementor-widget-text-editor\" data-id=\"c579e25\" 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<h3 data-start=\"4006\" data-end=\"4036\">Klimabonus \u2013 basic subsidy<\/h3><ul data-start=\"4037\" data-end=\"4353\"><li data-start=\"4037\" data-end=\"4201\"><p data-start=\"4039\" data-end=\"4201\"><strong data-start=\"4039\" data-end=\"4157\">\u201cDemande d\u2019une aide dans le cadre du paquet banque climatique et logement durable \u2013 DEPA-2026 \u2013 Personne physique\u201d<\/strong><br data-start=\"4157\" data-end=\"4160\" \/>(or the form for <strong data-start=\"4179\" data-end=\"4200\">Personnes morales<\/strong>)<\/p><\/li><li data-start=\"4202\" data-end=\"4244\"><p data-start=\"4204\" data-end=\"4244\"><strong data-start=\"4204\" data-end=\"4244\">\u201cChaudi\u00e8re \u00e0 bois \u2013 Fiche BOIS 2026\u201d<\/strong><\/p><\/li><li data-start=\"4245\" data-end=\"4353\"><p data-start=\"4247\" data-end=\"4353\">Or submission <strong data-start=\"4261\" data-end=\"4292\">online via <a class=\"decorated-link\" href=\"http:\/\/www.myguichet.lu\" target=\"_new\" rel=\"noopener\" data-start=\"4274\" data-end=\"4290\">www.myguichet.lu<\/a><\/strong><br data-start=\"4292\" data-end=\"4295\" \/><em data-start=\"4297\" data-end=\"4353\">(only for private individuals and single-family homes)<\/em><\/p><\/li><\/ul>\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-3cc70d8 elementor-widget elementor-widget-heading\" data-id=\"3cc70d8\" 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\">Social Top-Up Klimabonus<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e10248a elementor-widget elementor-widget-text-editor\" data-id=\"e10248a\" 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 data-start=\"4389\" data-end=\"4460\"><p data-start=\"4391\" data-end=\"4460\">\u201cDemande en obtention d\u2019une aide \u00e0 l\u2019assainissement \u00e9nerg\u00e9tique (F3)\u201d<\/p><\/li><li data-start=\"4461\" data-end=\"4538\"><p data-start=\"4463\" data-end=\"4538\">\u201cD\u00e9claration relative \u00e0 la composition de la communaut\u00e9 domestique (L\/A21)\u201d<\/p><\/li><li data-start=\"4539\" data-end=\"4588\"><p data-start=\"4541\" data-end=\"4588\">\u201cD\u00e9claration sur l\u2019honneur \u2013 Acquisition (A92)\u201d<\/p><\/li><\/ul>\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-403eac1 elementor-widget elementor-widget-heading\" data-id=\"403eac1\" 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\">Validity of the Klimabonus 551 scheme<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d7bc7cb elementor-widget elementor-widget-text-editor\" data-id=\"d7bc7cb\" 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 data-start=\"4636\" data-end=\"4680\">The Klimabonus 551 basic subsidy applies to:<\/p><ul data-start=\"4681\" data-end=\"4834\"><li data-start=\"4681\" data-end=\"4748\"><p data-start=\"4683\" data-end=\"4748\">invoices dated between <strong data-start=\"4706\" data-end=\"4745\">1 January 2026 and 31 December 2030<\/strong>,<\/p><\/li><li data-start=\"4749\" data-end=\"4834\"><p data-start=\"4751\" data-end=\"4834\"><strong data-start=\"4751\" data-end=\"4833\">subject to the finalisation of the legislative process for draft bill No. 8585<\/strong>.<\/p><\/li><\/ul>\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-650d173 eael-infobox-content-align--center eael-infobox-icon-bg-shape-none eael-infobox-icon-hover-bg-shape-none elementor-widget elementor-widget-eael-info-box\" data-id=\"650d173\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"eael-info-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"eael-infobox icon-on-top\">\n\t            <div class=\"infobox-icon eael-icon-only\">\n\n            \n                            <div class=\"infobox-icon-wrap\">\n                    <i aria-hidden=\"true\" class=\"far fa-bookmark\"><\/i>                <\/div>\n            \n            \n        <\/div>\n            <div class=\"infobox-content eael-icon-only\">\n        <div><p><strong><em>The subsidy rules described on this page are based on the official framework defined by <a href=\"http:\/\/klima-agence.lu\" target=\"_blank\" rel=\"nofollow noopener\">Klima Agence<\/a>.<\/em><\/strong><br \/><strong><em>As regulations may evolve, <a href=\"http:\/\/klima-agence.lu\" target=\"_blank\" rel=\"nofollow noopener\">Klima Agence<\/a> remains the final authority for validation.<\/em><\/strong><br \/><strong><em>We stay aligned with their latest guidelines to ensure our clients receive accurate and reliable information throughout the process.<\/em><\/strong><\/p><\/div>        <\/div>\n            <\/div>\n\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-da58032 e-flex e-con-boxed e-con e-parent\" data-id=\"da58032\" 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-0f3e0bc elementor-widget elementor-widget-spacer\" data-id=\"0f3e0bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae4d092 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"ae4d092\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<div class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fbb5b63 elementor-widget elementor-widget-heading\" data-id=\"fbb5b63\" 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\">Our experts help you assess whether an air-to-water heat pump is suitable for your home, explain the technical requirements in clear terms, and guide you through the Klimabonus 551 subsidy conditions.\nGet practical advice, clear answers and support with the next steps free of charge and without obligation.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c1086b1 ekit_wpForms_container-form-button-custom elementor-widget elementor-widget-elementskit-wp-forms\" data-id=\"c1086b1\" 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-18613\">\n\t\t\t\t#wpforms-18613 {\n\t\t\t\t--wpforms-field-border-radius: 10px;\n--wpforms-field-border-color: rgba(0, 0, 0, 0.25);\n--wpforms-field-border-color-spare: rgba(0, 0, 0, 0.25);\n--wpforms-field-text-color: rgba(0, 0, 0, 0.7);\n--wpforms-label-color: rgba(0, 0, 0, 0.85);\n--wpforms-label-sublabel-color: rgba(0, 0, 0, 0.55);\n--wpforms-button-border-radius: 10px;\n--wpforms-container-border-radius: 10px;\n--wpforms-background-color: rgba(0, 0, 0, 0);\n--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 14px;\n--wpforms-field-size-checkbox-size: 16px;\n--wpforms-field-size-sublabel-spacing: 5px;\n--wpforms-field-size-icon-size: 1;\n--wpforms-label-size-font-size: 16px;\n--wpforms-label-size-line-height: 19px;\n--wpforms-label-size-sublabel-font-size: 14px;\n--wpforms-label-size-sublabel-line-height: 17px;\n--wpforms-button-size-font-size: 17px;\n--wpforms-button-size-height: 41px;\n--wpforms-button-size-padding-h: 15px;\n--wpforms-button-size-margin-top: 10px;\n--wpforms-container-shadow-size-box-shadow: none;\n\t\t\t}\n\t\t\t<\/style><div class=\"wpforms-container wpforms-container-full wpforms-render-modern\" id=\"wpforms-18613\"><form id=\"wpforms-form-18613\" class=\"wpforms-validate wpforms-form wpforms-ajax-form\" data-formid=\"18613\" method=\"post\" enctype=\"multipart\/form-data\" action=\"\/fr\/wp-json\/wp\/v2\/pages\/18591\" data-token=\"dcbfafdf7d0bdeb23722ea40eb473b99\" data-token-time=\"1776641080\"><noscript class=\"wpforms-error-noscript\">Veuillez activer JavaScript dans votre navigateur pour remplir ce formulaire.<\/noscript><div id=\"wpforms-error-noscript\" style=\"display: none;\">Veuillez activer JavaScript dans votre navigateur pour remplir ce formulaire.<\/div><div class=\"wpforms-field-container\">\t\t<div id=\"wpforms-18613-field_6-container\"\n\t\t\tclass=\"wpforms-field wpforms-field-text\"\n\t\t\tdata-field-type=\"text\"\n\t\t\tdata-field-id=\"6\"\n\t\t\t>\n\t\t\t<label class=\"wpforms-field-label\" for=\"wpforms-18613-field_6\" >number are in?<\/label>\n\t\t\t<input type=\"text\" id=\"wpforms-18613-field_6\" class=\"wpforms-field-medium\" name=\"wpforms[fields][6]\" >\n\t\t<\/div>\n\t\t<div id=\"wpforms-18613-field_1-container\" class=\"wpforms-field wpforms-field-name\" 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-18613-field_1\" class=\"wpforms-field-name-first wpforms-field-required\" name=\"wpforms[fields][1][first]\" aria-errormessage=\"wpforms-18613-field_1-error\" required><label for=\"wpforms-18613-field_1\" class=\"wpforms-field-sublabel after\">Pr\u00e9nom<\/label><\/div><div class=\"wpforms-field-row-block wpforms-one-half\"><input type=\"text\" id=\"wpforms-18613-field_1-last\" class=\"wpforms-field-name-last wpforms-field-required\" name=\"wpforms[fields][1][last]\" aria-errormessage=\"wpforms-18613-field_1-last-error\" required><label for=\"wpforms-18613-field_1-last\" class=\"wpforms-field-sublabel after\">Nom<\/label><\/div><\/div><\/fieldset><\/div><div id=\"wpforms-18613-field_4-container\" class=\"wpforms-field wpforms-field-number\" data-field-id=\"4\"><label class=\"wpforms-field-label\" for=\"wpforms-18613-field_4\">Phone number<\/label><input type=\"number\" id=\"wpforms-18613-field_4\" class=\"wpforms-field-medium\" name=\"wpforms[fields][4]\" step=\"any\" aria-errormessage=\"wpforms-18613-field_4-error\" ><\/div><div id=\"wpforms-18613-field_2-container\" class=\"wpforms-field wpforms-field-email\" data-field-id=\"2\"><label class=\"wpforms-field-label\" for=\"wpforms-18613-field_2\">Your Email <span class=\"wpforms-required-label\" aria-hidden=\"true\">*<\/span><\/label><input type=\"email\" id=\"wpforms-18613-field_2\" class=\"wpforms-field-medium wpforms-field-required\" name=\"wpforms[fields][2]\" spellcheck=\"false\" aria-errormessage=\"wpforms-18613-field_2-error\" required><\/div><div id=\"wpforms-18613-field_3-container\" class=\"wpforms-field wpforms-field-textarea\" data-field-id=\"3\"><label class=\"wpforms-field-label\" for=\"wpforms-18613-field_3\">What subsidies are you interested in?<\/label><textarea id=\"wpforms-18613-field_3\" class=\"wpforms-field-medium\" name=\"wpforms[fields][3]\" aria-errormessage=\"wpforms-18613-field_3-error\" ><\/textarea><\/div><div id=\"wpforms-18613-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-18613-field_5\" class=\"wpforms-field-required\"><li class=\"choice-1 depth-1\"><input type=\"checkbox\" id=\"wpforms-18613-field_5_1\" name=\"wpforms[fields][5][]\" value=\"I agree to be contacted by phone and e-mail from Voltmax.\" aria-errormessage=\"wpforms-18613-field_5_1-error\" required ><label class=\"wpforms-field-label-inline\" for=\"wpforms-18613-field_5_1\">I agree to be contacted by phone and e-mail from Voltmax.<\/label><\/li><li class=\"choice-2 depth-1\"><input type=\"checkbox\" id=\"wpforms-18613-field_5_2\" name=\"wpforms[fields][5][]\" value=\"I consent to the processing of my data in accordance with the current provisions of the GDPR.\" 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value=\"wpforms-submit\">Submit<\/button><img decoding=\"async\" src=\"https:\/\/voltmax.lu\/wp-content\/plugins\/wpforms\/assets\/images\/submit-spin.svg\" class=\"wpforms-submit-spinner\" style=\"display: none;\" width=\"26\" height=\"26\" alt=\"Chargement en cours\" title=\"\"><\/div><\/form><\/div>  <!-- .wpforms-container --><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6e538cf elementor-widget elementor-widget-spacer\" data-id=\"6e538cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\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-eab52fd e-flex e-con-boxed e-con e-parent\" data-id=\"eab52fd\" 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-27ee111 elementor-widget elementor-widget-heading\" data-id=\"27ee111\" 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\">FAQ \u2013 Frequently Asked Questions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a70dd6 elementor-widget elementor-widget-elementskit-faq\" data-id=\"9a70dd6\" 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-5b08ded\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">What does Klimabonus 551 support?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Klimabonus 551 supports the installation of air-to-water heat pumps in residential buildings, using renewable energy from the ambient air to provide heating.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-d8acd02\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Who can apply for Klimabonus 551?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                The subsidy is available only for residential buildings, provided all technical and administrative requirements are met.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-4a8899a\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">What technical requirements must the heat pump meet?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                The installation must include:\n\nhydraulic balancing after installation,\n\na separate or integrated electricity meter,\n\na separate or integrated heat meter.\n\nAdditional requirements may apply depending on the building type.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-848758e\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Is a buffer tank required?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Yes, for existing buildings, a buffer tank of at least 30 litres per kWth of heating power is required.\nThis does not apply to inverter heat pumps with speed or power modulation.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-177abaf\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">What performance level is required?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                The heat pump must achieve a Coefficient of Performance (COP) of at least 3.1 at A7\/W35, in accordance with the EN 14511 standard.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-ab24356\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Are there noise level requirements?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Yes.\nThe outdoor unit must comply with defined sound power limits depending on system size.\nIf these limits are exceeded, additional soundproofing may be used, or an acoustic assessment must demonstrate that noise levels at the nearest property boundary do not exceed 40 dB(A).            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-1b6e04d\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Are different rules applied for new buildings?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Yes.\nFor new buildings, the heating system must be designed to operate with a maximum flow temperature of 35\u00b0C (W35).\nIf this is not possible, the heat pump must still achieve the required COP value at the chosen operating temperature.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-eeb54d6\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Are hybrid heating systems eligible?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Yes, provided the system is non-fossil and the heat pump covers at least 70% of the annual heat demand.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-44951eb\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Can I receive multiple heating subsidies for one building?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                No.\nOnly one heating system can be subsidised per residential building:\n\nheat pump, or\n\nwood heating system, or\n\nconnection to district heating.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-702a6f5\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">When can I apply for the subsidy?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                The subsidy application can be submitted after the heat pump installation has been completed.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-78d3a33\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Is a social top-up subsidy available?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Yes.\nEligible households may apply for a Social Top-Up Klimabonus after receiving the decision granting the basic subsidy.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-a1cd671\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">Who makes the final decision on the subsidy?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                Final eligibility and approval are determined by the competent public authority, in accordance with the applicable legislation.            <\/div>\n        <\/div>\n                <div class=\"elementskit-single-faq elementor-repeater-item-4e24783\">\n            <div class=\"elementskit-faq-header\">\n                <h2 class=\"elementskit-faq-title\">How long is Klimabonus 551 valid?<\/h2>\n            <\/div>\n            <div class=\"elementskit-faq-body\">\n                The Klimabonus 551 basic subsidy applies to invoices dated between 1 January 2026 and 31 December 2030,\nsubject to the final adoption of draft bill No. 8585.            <\/div>\n        <\/div>\n                                <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does Klimabonus 551 support?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Klimabonus 551 supports the installation of 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Klimabonus 551 is a public subsidy scheme in Luxembourg supporting the installation of air-to-water heat pumps in residential buildings. An air-to-water heat pump uses energy from the ambient air to provide heating for the building. It is a renewable heating solution that helps reduce fossil fuel [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-18591","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/voltmax.lu\/fr\/wp-json\/wp\/v2\/pages\/18591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/voltmax.lu\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/voltmax.lu\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/voltmax.lu\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/voltmax.lu\/fr\/wp-json\/wp\/v2\/comments?post=18591"}],"version-history":[{"count":0,"href":"https:\/\/voltmax.lu\/fr\/wp-json\/wp\/v2\/pages\/18591\/revisions"}],"wp:attachment":[{"href":"https:\/\/voltmax.lu\/fr\/wp-json\/wp\/v2\/media?parent=18591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}