{"id":67331,"date":"2026-03-03T10:27:42","date_gmt":"2026-03-03T09:27:42","guid":{"rendered":"https:\/\/www.idm-energie.at\/?page_id=67331"},"modified":"2026-07-06T16:21:21","modified_gmt":"2026-07-06T14:21:21","slug":"running-costs","status":"publish","type":"page","link":"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/","title":{"rendered":"Running Costs"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1185.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><nav class=\"fusion-breadcrumbs fusion-breadcrumbs-1\" style=\"--awb-margin-top:1%;--awb-breadcrumb-sep:&#039;\/&#039;;\" aria-label=\"Breadcrumb\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Home<\/span><\/p><\/nav><\/nav><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-one\" style=\"--awb-margin-top:3%;--awb-margin-bottom:3%;--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;\"><h1 class=\"fusion-title-heading title-heading-center fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:42;line-height:1;\">Cost of Running Heat Pump<\/h1><\/div><div class=\"fusion-text fusion-text-1\"><p data-start=\"41\" data-end=\"182\">Running costs are the practical result of heat pump efficiency: <strong data-start=\"105\" data-end=\"181\">how much you pay for electricity to deliver the heat your building needs<\/strong>.<\/p>\n<p data-start=\"184\" data-end=\"288\">A heat pump\u2019s running cost is not determined by the unit alone. It depends on three system-level inputs:<\/p>\n<ol data-start=\"290\" data-end=\"523\">\n<li data-start=\"290\" data-end=\"361\">\n<p data-start=\"293\" data-end=\"361\"><strong data-start=\"293\" data-end=\"308\">Heat demand<\/strong> (how much heat the building needs over the season)<\/p>\n<\/li>\n<li data-start=\"362\" data-end=\"451\">\n<p data-start=\"365\" data-end=\"451\"><strong data-start=\"365\" data-end=\"395\">Seasonal\/system efficiency<\/strong> (how many kWh of heat you get per kWh of electricity)<\/p>\n<\/li>\n<li data-start=\"452\" data-end=\"523\">\n<p data-start=\"455\" data-end=\"523\"><strong data-start=\"455\" data-end=\"486\">Electricity price structure<\/strong> (tariff, time-of-use, fixed charges)<\/p>\n<\/li>\n<\/ol>\n<p data-start=\"525\" data-end=\"789\">Technical guidance for heat pump systems commonly highlights that seasonal performance (often expressed as SPF) is one of the main drivers for operational cost, together with electricity consumption measurement and monitoring.<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-stretch fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1185.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion-flex-column\" style=\"--awb-padding-top:1%;--awb-padding-right:2%;--awb-padding-left:2%;--awb-overflow:hidden;--awb-bg-color:#fff042;--awb-bg-color-hover:#fff042;--awb-bg-size:cover;--awb-border-radius:16px 16px 16px 16px;--awb-width-large:800px;--awb-margin-top-large:0px;--awb-spacing-right-large:2%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-paragraph blink-heading\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;--awb-font-size:20px;\"><p class=\"fusion-title-heading title-heading-center title-heading-tag fusion-responsive-typography-calculated\" style=\"margin:0;text-transform:uppercase;font-size:1em;--fontSize:20;line-height:1.8;\"><strong>Configure your personalized heat pump system!<\/strong><\/p><\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-stretch fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"--awb-flex-grow:0;--awb-flex-grow-medium:0;--awb-flex-grow-small:0;--awb-flex-shrink:0;--awb-flex-shrink-medium:0;--awb-flex-shrink-small:0;width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-0 fusion_builder_column_inner_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:-5px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-2\" style=\"--awb-margin-left:2%;\"><p style=\"text-align: left;\">Plan your heat pump system with iDM Energiesysteme. Discover efficient heating, cooling, and hot water solutions for new buildings, renovations, and modern energy systems. Configure and personalize your iDM heat pump solution in just a few clicks.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-1 fusion_builder_column_inner_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-3\"><div style=\"display: flex; align-items: center; gap: 15px; flex-wrap: wrap;\">\n<div style=\"display: flex;\"><img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73518 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/thomas-portrait-150x150.jpg\" alt=\"Thomas Pletzer\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/thomas-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/thomas-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><br \/>\n<img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73509 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/matthias-portrait-150x150.jpg\" alt=\"Matthias Steiner\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/matthias-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/matthias-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><br \/>\n<img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73500 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/christian-hutter-portrait-150x150.jpg\" alt=\"Christian Hutter\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/christian-hutter-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/christian-hutter-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><br \/>\n<img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73491 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/adrian-portrait-150x150.jpg\" alt=\"Adrian Egger\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/adrian-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/adrian-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/div>\n<div style=\"color: #000000; line-height: 0.7; margin-left: 2%;\"><strong style=\"display: block;\">CONNECT WITH OUR EXPERTS<\/strong><br \/>\n<span style=\"opacity: 0.8;\">50+ Years of Heat Pumps Experience<\/span><\/div>\n<\/div>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-2 fusion_builder_column_inner_1_3 1_3 fusion-flex-column fusion-flex-align-self-center\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-margin-top-large:0px;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:5.76%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-center fusion-content-layout-column\"><div style=\"text-align:center;\"><a class=\"fusion-button button-flat fusion-button-default-size button-default fusion-button-default button-1 fusion-button-default-span fusion-button-default-type\" target=\"_self\" href=\"https:\/\/konfigurator.myidm.at\/#\/?lang=EN\" rel=\"noopener\"><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Configure Now!<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1185.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-4\">\n<\/div><div class=\"fusion-text fusion-text-5\"><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 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=\"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/#What_%E2%80%9Crunning_cost%E2%80%9D_includes\" >What \u201crunning cost\u201d includes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/#A_simple_way_to_estimate_running_cost\" >A simple way to estimate running cost<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/#The_biggest_drivers_of_running_costs\" >The biggest drivers of running costs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/#Why_%E2%80%9Ccheap_to_run%E2%80%9D_depends_on_context\" >Why \u201ccheap to run\u201d depends on context<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/#Practical_checklist\" >Practical checklist<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/#Key_takeaway\" >Key takeaway<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.idm-energie.at\/en\/heat-pump-efficiency\/running-costs\/#Frequently_Asked_Questions_FAQs\" >Frequently Asked Questions (FAQs)<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-start=\"796\" data-end=\"827\"><span class=\"ez-toc-section\" id=\"What_%E2%80%9Crunning_cost%E2%80%9D_includes\"><\/span>What \u201crunning cost\u201d includes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"829\" data-end=\"909\">For a heat pump system, running cost typically includes the electricity used by:<\/p>\n<ul data-start=\"911\" data-end=\"1244\">\n<li data-start=\"911\" data-end=\"946\">\n<p data-start=\"913\" data-end=\"946\">the compressor (main contributor)<\/p>\n<\/li>\n<li data-start=\"947\" data-end=\"974\">\n<p data-start=\"949\" data-end=\"974\">fans (air-source systems)<\/p>\n<\/li>\n<li data-start=\"975\" data-end=\"1049\">\n<p data-start=\"977\" data-end=\"1049\">circulation pumps (heating side and\/or source side, depending on design)<\/p>\n<\/li>\n<li data-start=\"1050\" data-end=\"1078\">\n<p data-start=\"1052\" data-end=\"1078\">controls and standby power<\/p>\n<\/li>\n<li data-start=\"1079\" data-end=\"1119\">\n<p data-start=\"1081\" data-end=\"1119\">defrost operation (air-source systems)<\/p>\n<\/li>\n<li data-start=\"1120\" data-end=\"1175\">\n<p data-start=\"1122\" data-end=\"1175\">backup electric heater use (if present and activated)<\/p>\n<\/li>\n<li data-start=\"1176\" data-end=\"1244\">\n<p data-start=\"1178\" data-end=\"1244\">domestic hot water production (often higher temperature operation)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1246\" data-end=\"1501\">SEAI notes that overall efficiency is influenced by electricity used by other system components (including circulation pumps and electric heaters during certain operating cycles), which directly affects running costs.<\/p>\n<\/div><div class=\"fusion-image-element\" style=\"text-align:center;--awb-margin-top:2%;--awb-margin-bottom:2%;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\" style=\"border:3px solid #333333;\"><img decoding=\"async\" width=\"1024\" height=\"559\" alt=\"Heat pump efficiency infographic showing that higher COP results in lower running costs and monthly energy bills.\" title=\"running-costs\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/03\/running-costs-1024x559.webp\" class=\"img-responsive wp-image-67345\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/03\/running-costs-200x109.webp 200w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/03\/running-costs-400x218.webp 400w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/03\/running-costs-600x327.webp 600w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/03\/running-costs-800x436.webp 800w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/03\/running-costs-1200x655.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 1200px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-6\"><h2 data-start=\"1508\" data-end=\"1561\"><span class=\"ez-toc-section\" id=\"A_simple_way_to_estimate_running_cost\"><\/span>A simple way to estimate running cost<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"1563\" data-end=\"1614\">A practical estimate starts with this relationship:<\/p>\n<p data-start=\"1616\" data-end=\"1714\"><strong data-start=\"1616\" data-end=\"1714\">Seasonal electricity (kWh) \u2248 Seasonal heat delivered (kWh) \/ Seasonal efficiency (SPF or SCOP)<\/strong><\/p>\n<p data-start=\"1716\" data-end=\"1793\"><strong data-start=\"1716\" data-end=\"1793\">Running cost (\u20ac) \u2248 Seasonal electricity (kWh) \u00d7 electricity price (\u20ac\/kWh)<\/strong><\/p>\n<p data-start=\"1795\" data-end=\"2055\">This captures the key point: higher seasonal efficiency means less electricity needed to deliver the same heat. SEAI\u2019s implementation guidance explicitly connects SPF to annual electricity consumption and operational cost.<\/p>\n<h2 data-start=\"2062\" data-end=\"2101\"><span class=\"ez-toc-section\" id=\"The_biggest_drivers_of_running_costs\"><\/span>The biggest drivers of running costs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"2103\" data-end=\"2148\">Electricity price and tariff structure<\/h3>\n<p data-start=\"2149\" data-end=\"2402\">Electricity prices vary by country, supplier, contract type, and time period. Eurostat reports household electricity prices (including taxes) across the EU and shows that prices can change between half-year periods.<\/p>\n<p data-start=\"2404\" data-end=\"2699\">In some markets, time-variable pricing can make costs more sensitive to <em data-start=\"2476\" data-end=\"2482\">when<\/em> a heat pump runs. For example, Austrian utilities have introduced dynamic tariffs tied to market conditions, which can create large differences between off-peak and peak pricing.<\/p>\n<h3 data-start=\"2701\" data-end=\"2758\">Seasonal\/system efficiency (SPF in real operation)<\/h3>\n<p data-start=\"2759\" data-end=\"3050\">In real buildings, running costs are strongly linked to how efficiently the installed system operates. Field monitoring work highlights that measured performance can differ across building types and installations, which affects electricity use and cost.<\/p>\n<h3 data-start=\"3052\" data-end=\"3087\">Flow temperature requirement<\/h3>\n<p data-start=\"3088\" data-end=\"3325\">Higher flow temperatures generally reduce heat pump efficiency and increase electricity consumption for the same heat output. This is why emitters (underfloor heating, radiators) and building heat loss matter for costs, not just comfort.<\/p>\n<h3 data-start=\"3327\" data-end=\"3386\">Outdoor temperature and defrost (air-source systems)<\/h3>\n<p data-start=\"3387\" data-end=\"3567\">Cold and humid conditions can reduce efficiency and add defrost-related electricity use. This shows up most in winter periods near freezing, where defrost cycling is more frequent.<\/p>\n<h3 data-start=\"3569\" data-end=\"3614\">Control strategy and part-load cycling<\/h3>\n<p data-start=\"3615\" data-end=\"3925\">A control strategy that keeps flow temperature higher than needed or causes frequent start-stop cycling can increase seasonal electricity use. Guidance documents emphasize that metering and proper setup are essential to understand and manage performance and running costs.<\/p>\n<h3 data-start=\"3927\" data-end=\"3970\">Backup heater operation (if present)<\/h3>\n<p data-start=\"3971\" data-end=\"4349\">If an electric backup heater runs often, costs rise quickly because direct electric heating has a much lower \u201cheat delivered per kWh\u201d than a well-performing heat pump. In TOFU terms: backup heat is normal as a safety function, but frequent backup operation is usually a sign the system is operating outside its intended efficient range (design, controls, or extreme conditions).<\/p>\n<h2 data-start=\"4356\" data-end=\"4396\"><span class=\"ez-toc-section\" id=\"Why_%E2%80%9Ccheap_to_run%E2%80%9D_depends_on_context\"><\/span>Why \u201ccheap to run\u201d depends on context<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"4398\" data-end=\"4868\">It\u2019s common to hear that heat pumps are cheap to run because they can deliver multiple units of heat per unit of electricity. That principle is correct, but actual cost savings depend on the <strong data-start=\"4589\" data-end=\"4624\">electricity-to-fuel price ratio<\/strong>, building demand, and achieved seasonal efficiency. The EU JRC report on heat pumps notes operating costs depend on electricity prices and the energy performance of the building and system (including SPF).<\/p>\n<p data-start=\"4870\" data-end=\"5057\">This is also why energy labels and standardized seasonal metrics are helpful for comparison, but they do not guarantee identical bills in every home.<\/p>\n<h2 data-start=\"5064\" data-end=\"5103\"><span class=\"ez-toc-section\" id=\"Practical_checklist\"><\/span>Practical checklist<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5105\" data-end=\"5209\">If your goal is to understand or reduce running costs, these are the most useful questions to ask early:<\/p>\n<ul data-start=\"5211\" data-end=\"5725\">\n<li data-start=\"5211\" data-end=\"5318\">\n<p data-start=\"5213\" data-end=\"5318\">What seasonal efficiency level (SCOP for comparison, SPF for real use) is realistic for my building type?<\/p>\n<\/li>\n<li data-start=\"5319\" data-end=\"5405\">\n<p data-start=\"5321\" data-end=\"5405\">Can the system operate at low flow temperatures (emitters + insulation + heat load)?<\/p>\n<\/li>\n<li data-start=\"5406\" data-end=\"5500\">\n<p data-start=\"5408\" data-end=\"5500\">How will the heat pump be controlled (weather compensation, zoning stability, DHW settings)?<\/p>\n<\/li>\n<li data-start=\"5501\" data-end=\"5582\">\n<p data-start=\"5503\" data-end=\"5582\">What tariff will electricity be purchased on (flat rate, time-of-use, dynamic)?<\/p>\n<\/li>\n<li data-start=\"5583\" data-end=\"5639\">\n<p data-start=\"5585\" data-end=\"5639\">Will backup heat run often, and under what conditions?<\/p>\n<\/li>\n<li data-start=\"5640\" data-end=\"5725\">\n<p data-start=\"5642\" data-end=\"5725\">Is electricity consumption being metered in a way that matches the system boundary?<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5727\" data-end=\"5929\">SEAI\u2019s operation and maintenance guidance highlights that measuring electricity consumption is essential for determining performance and establishing running costs.<\/p>\n<h2 data-start=\"5936\" data-end=\"5951\"><span class=\"ez-toc-section\" id=\"Key_takeaway\"><\/span>Key takeaway<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5953\" data-end=\"6045\">Running costs are driven by <strong data-start=\"5981\" data-end=\"6044\">heat demand \u00d7 (1 \/ seasonal efficiency) \u00d7 electricity price<\/strong>.<\/p>\n<p data-start=\"6047\" data-end=\"6360\">So the best way to influence running costs is usually to improve the system conditions that protect seasonal efficiency\u2014especially flow temperature, control strategy, and stable part-load operation\u2014while also choosing a suitable electricity tariff structure where possible.<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-4 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-stretch fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"max-width:1185.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion-flex-column\" style=\"--awb-padding-top:1%;--awb-padding-right:2%;--awb-padding-left:2%;--awb-overflow:hidden;--awb-bg-color:#fff042;--awb-bg-color-hover:#fff042;--awb-bg-size:cover;--awb-border-radius:16px 16px 16px 16px;--awb-width-large:800px;--awb-margin-top-large:0px;--awb-spacing-right-large:2%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-center fusion-title-text fusion-title-size-paragraph blink-heading\" style=\"--awb-margin-top-small:10px;--awb-margin-right-small:0px;--awb-margin-bottom-small:10px;--awb-margin-left-small:0px;--awb-font-size:20px;\"><p class=\"fusion-title-heading title-heading-center title-heading-tag fusion-responsive-typography-calculated\" style=\"margin:0;text-transform:uppercase;font-size:1em;--fontSize:20;line-height:1.8;\"><strong>Configure your personalized heat pump system!<\/strong><\/p><\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-stretch fusion-flex-justify-content-center fusion-flex-content-wrap\" style=\"--awb-flex-grow:0;--awb-flex-grow-medium:0;--awb-flex-grow-small:0;--awb-flex-shrink:0;--awb-flex-shrink-medium:0;--awb-flex-shrink-small:0;width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-3 fusion_builder_column_inner_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:-5px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-7\" style=\"--awb-margin-left:2%;\"><p style=\"text-align: left;\">Plan your heat pump system with iDM Energiesysteme. Discover efficient heating, cooling, and hot water solutions for new buildings, renovations, and modern energy systems. Configure and personalize your iDM heat pump solution in just a few clicks.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-4 fusion_builder_column_inner_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-8\"><div style=\"display: flex; align-items: center; gap: 15px; flex-wrap: wrap;\">\n<div style=\"display: flex;\"><img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73518 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/thomas-portrait-150x150.jpg\" alt=\"Thomas Pletzer\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/thomas-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/thomas-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><br \/>\n<img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73509 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/matthias-portrait-150x150.jpg\" alt=\"Matthias Steiner\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/matthias-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/matthias-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><br \/>\n<img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73500 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/christian-hutter-portrait-150x150.jpg\" alt=\"Christian Hutter\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/christian-hutter-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/christian-hutter-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><br \/>\n<img decoding=\"async\" width=\"150\" height=\"150\" class=\"size-thumbnail wp-image-73491 aligncenter\" style=\"width: 50px; height: 50px; border-radius: 50%; border: 2px solid #000000;\" src=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/adrian-portrait-150x150.jpg\" alt=\"Adrian Egger\" srcset=\"https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/adrian-portrait-66x66.jpg 66w, https:\/\/www.idm-energie.at\/wp-content\/uploads\/2026\/07\/adrian-portrait-150x150.jpg 150w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/div>\n<div style=\"color: #000000; line-height: 0.7; margin-left: 2%;\"><strong style=\"display: block;\">CONNECT WITH OUR EXPERTS<\/strong><br \/>\n<span style=\"opacity: 0.8;\">50+ Years of Heat Pumps Experience<\/span><\/div>\n<\/div>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-5 fusion_builder_column_inner_1_3 1_3 fusion-flex-column fusion-flex-align-self-center\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-margin-top-large:0px;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:5.76%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-center fusion-content-layout-column\"><div style=\"text-align:center;\"><a class=\"fusion-button button-flat fusion-button-default-size button-default fusion-button-default button-2 fusion-button-default-span fusion-button-default-type\" target=\"_self\" href=\"https:\/\/konfigurator.myidm.at\/#\/?lang=EN\" rel=\"noopener\"><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Configure Now!<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-5 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1185.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-9 fusion-text-no-margin\" style=\"--awb-margin-bottom:5px;\"><h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQs\"><\/span>Frequently Asked Questions (FAQs)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div><div class=\"accordian fusion-accordian\" style=\"--awb-border-size:1px;--awb-icon-size:16px;--awb-content-font-size:15px;--awb-icon-alignment:right;--awb-hover-color:#f9f9fb;--awb-border-color:#e2e2e2;--awb-background-color:#ffffff;--awb-divider-color:#e2e2e2;--awb-divider-hover-color:#e2e2e2;--awb-icon-color:#009fe3;--awb-title-color:#59682f;--awb-content-color:#3f3f3f;--awb-icon-box-color:#212934;--awb-toggle-hover-accent-color:#009fe3;--awb-title-font-family:&quot;Aller&quot;;--awb-title-font-weight:700;--awb-title-font-style:normal;--awb-title-font-size:18px;--awb-content-font-family:&quot;Aller&quot;;--awb-content-font-style:normal;--awb-content-font-weight:400;\"><div class=\"panel-group fusion-toggle-icon-right fusion-toggle-icon-unboxed\" id=\"accordion-67331-1\"><div class=\"fusion-panel panel-default panel-4df5c9582c4f1f28f fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#59682f;--awb-content-color:#3f3f3f;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_4df5c9582c4f1f28f\"><a aria-expanded=\"false\" aria-controls=\"4df5c9582c4f1f28f\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-67331-1\" data-target=\"#4df5c9582c4f1f28f\" href=\"#4df5c9582c4f1f28f\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">1. What are running costs for a heat pump?<\/span><\/a><\/h4><\/div><div id=\"4df5c9582c4f1f28f\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_4df5c9582c4f1f28f\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p>Running costs are the ongoing costs of operating the heat pump system, mainly the cost of electricity used to provide space heating (and often domestic hot water, and sometimes cooling). They include compressor electricity plus auxiliary electricity for pumps, fans, controls\/standby, defrost (air-source), and any backup electric heating if it runs.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-801e3cf79ae4855fc fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#59682f;--awb-content-color:#3f3f3f;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_801e3cf79ae4855fc\"><a aria-expanded=\"false\" aria-controls=\"801e3cf79ae4855fc\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-67331-1\" data-target=\"#801e3cf79ae4855fc\" href=\"#801e3cf79ae4855fc\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">2. How are running costs linked to heat pump efficiency?<\/span><\/a><\/h4><\/div><div id=\"801e3cf79ae4855fc\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_801e3cf79ae4855fc\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p data-start=\"724\" data-end=\"807\">Running costs depend on how much heat the building needs and how efficiently the system delivers that heat using electricity. Higher seasonal\/system efficiency means less electricity is required for the same heating output, which typically lowers running costs.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-f85f5e2eeb41f3156 fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#59682f;--awb-content-color:#3f3f3f;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_f85f5e2eeb41f3156\"><a aria-expanded=\"false\" aria-controls=\"f85f5e2eeb41f3156\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-67331-1\" data-target=\"#f85f5e2eeb41f3156\" href=\"#f85f5e2eeb41f3156\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">3. What are the biggest factors that increase running costs?<\/span><\/a><\/h4><\/div><div id=\"f85f5e2eeb41f3156\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_f85f5e2eeb41f3156\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p data-start=\"825\" data-end=\"853\">Common cost drivers include:<\/p>\n<ul data-start=\"854\" data-end=\"1216\">\n<li data-start=\"854\" data-end=\"916\">\n<p data-start=\"856\" data-end=\"916\">high electricity prices or an unfavorable tariff structure<\/p>\n<\/li>\n<li data-start=\"917\" data-end=\"973\">\n<p data-start=\"919\" data-end=\"973\">high heat demand (poor insulation or high heat load)<\/p>\n<\/li>\n<li data-start=\"974\" data-end=\"1008\">\n<p data-start=\"976\" data-end=\"1008\">high required flow temperature<\/p>\n<\/li>\n<li data-start=\"1009\" data-end=\"1042\">\n<p data-start=\"1011\" data-end=\"1042\">frequent cycling at part load<\/p>\n<\/li>\n<li data-start=\"1043\" data-end=\"1109\">\n<p data-start=\"1045\" data-end=\"1109\">frequent defrost operation in cold, humid weather (air-source)<\/p>\n<\/li>\n<li data-start=\"1110\" data-end=\"1168\">\n<p data-start=\"1112\" data-end=\"1168\">significant auxiliary electricity use (pumps, standby)<\/p>\n<\/li>\n<li data-start=\"1169\" data-end=\"1216\">\n<p data-start=\"1171\" data-end=\"1216\">frequent backup heater operation (if present)<\/p>\n<\/li>\n<\/ul>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-46067894d2d081687 fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#59682f;--awb-content-color:#3f3f3f;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_46067894d2d081687\"><a aria-expanded=\"false\" aria-controls=\"46067894d2d081687\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-67331-1\" data-target=\"#46067894d2d081687\" href=\"#46067894d2d081687\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">4. Does a high COP guarantee low running costs?<\/span><\/a><\/h4><\/div><div id=\"46067894d2d081687\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_46067894d2d081687\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p data-start=\"1347\" data-end=\"1357\">No. COP is measured at a single test condition and does not represent performance across a full season. Running costs are more closely related to seasonal\/system performance (such as SCOP for standardized comparison or measured SPF) and to how the system is designed, installed, and controlled.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-49d9706d697972254 fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#59682f;--awb-content-color:#3f3f3f;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_49d9706d697972254\"><a aria-expanded=\"false\" aria-controls=\"49d9706d697972254\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-67331-1\" data-target=\"#49d9706d697972254\" href=\"#49d9706d697972254\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">5. Why does flow temperature affect running costs?<\/span><\/a><\/h4><\/div><div id=\"49d9706d697972254\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_49d9706d697972254\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p data-start=\"1730\" data-end=\"1733\">Higher flow temperature usually reduces heat pump efficiency because the system must operate with higher temperature lift. That increases electricity consumption for the same heating output, which increases running costs.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-4d487f78d4111caa4 fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#59682f;--awb-content-color:#3f3f3f;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_4d487f78d4111caa4\"><a aria-expanded=\"false\" aria-controls=\"4d487f78d4111caa4\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-67331-1\" data-target=\"#4d487f78d4111caa4\" href=\"#4d487f78d4111caa4\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">6. Can electricity tariffs change heat pump running costs?<\/span><\/a><\/h4><\/div><div id=\"4d487f78d4111caa4\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_4d487f78d4111caa4\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p data-start=\"1967\" data-end=\"2008\">Yes. Running costs depend on the electricity price you pay per kWh, and tariffs may include time-of-use or dynamic pricing where the cost varies by time or market conditions. If a tariff has high peak prices, operating patterns can affect total cost even when efficiency is unchanged.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-panel panel-default panel-59dd868b044726424 fusion-toggle-no-divider fusion-toggle-boxed-mode\" style=\"--awb-title-color:#59682f;--awb-content-color:#3f3f3f;\"><div class=\"panel-heading\"><h4 class=\"panel-title toggle\" id=\"toggle_59dd868b044726424\"><a aria-expanded=\"false\" aria-controls=\"59dd868b044726424\" role=\"button\" data-toggle=\"collapse\" data-parent=\"#accordion-67331-1\" data-target=\"#59dd868b044726424\" href=\"#59dd868b044726424\"><span class=\"fusion-toggle-icon-wrapper\" aria-hidden=\"true\"><i class=\"fa-fusion-box active-icon awb-icon-minus\" aria-hidden=\"true\"><\/i><i class=\"fa-fusion-box inactive-icon awb-icon-plus\" aria-hidden=\"true\"><\/i><\/span><span class=\"fusion-toggle-heading\">7. Why can backup electric heating increase running costs so much?<\/span><\/a><\/h4><\/div><div id=\"59dd868b044726424\" class=\"panel-collapse collapse \" aria-labelledby=\"toggle_59dd868b044726424\"><div class=\"panel-body toggle-content fusion-clearfix\">\n<p data-start=\"2294\" data-end=\"2316\">Backup electric heating (direct electric resistance) typically delivers roughly one unit of heat per unit of electricity, which is much less efficient than normal heat pump operation. If backup heating runs frequently, it can significantly raise electricity consumption and costs.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":34,"featured_media":2902,"parent":66448,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-67331","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/pages\/67331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/users\/34"}],"replies":[{"embeddable":true,"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/comments?post=67331"}],"version-history":[{"count":0,"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/pages\/67331\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/pages\/66448"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/media\/2902"}],"wp:attachment":[{"href":"https:\/\/www.idm-energie.at\/en\/wp-json\/wp\/v2\/media?parent=67331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}