{"id":11486,"date":"2020-01-10T09:54:15","date_gmt":"2020-01-10T09:54:15","guid":{"rendered":"https:\/\/www.seltron.si\/\/?p=11486"},"modified":"2026-01-20T11:02:01","modified_gmt":"2026-01-20T11:02:01","slug":"how-to-compare-heat-pumps","status":"publish","type":"post","link":"https:\/\/www.seltron.si\/en\/kako-primerjati-toplotne-crpalke\/","title":{"rendered":"How to compare heat pumps?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"11486\" class=\"elementor elementor-11486\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-0a13041 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0a13041\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-4cafa7b\" data-id=\"4cafa7b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-112ba5f elementor-hidden-mobile elementor-widget elementor-widget-image\" data-id=\"112ba5f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1070\" height=\"782\" src=\"https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko.jpg\" class=\"attachment-full size-full wp-image-11490 wp-post-image\" alt=\"How to compare heat pumps\" srcset=\"https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko.jpg 1070w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko-500x365.jpg 500w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko-800x585.jpg 800w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko-300x219.jpg 300w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko-1030x753.jpg 1030w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko-768x561.jpg 768w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/scop-podatek-za-toplotno-\u010drpalko-400x292.jpg 400w\" sizes=\"(max-width: 1070px) 100vw, 1070px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5303545 elementor-widget elementor-widget-image\" data-id=\"5303545\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1035\" height=\"664\" src=\"https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti.png\" class=\"attachment-full size-full wp-image-11615 wp-post-image\" alt=\"SFP Annual Efficiency Factor\" srcset=\"https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti.png 1035w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti-500x321.png 500w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti-800x513.png 800w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti-300x192.png 300w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti-1030x661.png 1030w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti-768x493.png 768w, https:\/\/www.seltron.si\/wp-content\/uploads\/2020\/01\/SFP-Letni-Faktor-U\u010dinkovitosti-400x257.png 400w\" sizes=\"(max-width: 1035px) 100vw, 1035px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">COP = Thermal energy \/ Electricity<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-95e769a\" data-id=\"95e769a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e120d87 elementor-widget elementor-widget-text-editor\" data-id=\"e120d87\" 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>What does the information provided by heat pump manufacturers mean and how do they compare?<\/h3><h3>COP - heating number<\/h3><p>By definition, the COP (Coefficient of Performance ) represents the ratio between the electricity consumed to operate the heat pump and the heat energy recovered. A COP of 5 means that for 1 kWh of electricity consumed to operate the heat pump, 5 kWh of heat energy is produced.<\/p><p>In order to correctly estimate the COP and compare different heat pump manufacturers, at least two other essential pieces of information are needed, namely at which outdoor temperature and at which outlet water temperature the manufacturer quotes the data.<\/p><p>Comparing two air\/water heat pumps<\/p><p>Legend:<\/p><ul><li>A7 - air temperature is 7 \u00b0C<\/li><li>W35 - outlet water temperature is 35 \u00b0C<\/li><li>Heat pump 1 has a COP of 4.2 ( A10\/ W35 )<\/li><li>Heat pump 2 has a COP of 3.9 ( A2\/ W35 )<\/li><\/ul><p>At first sight it is<a href=\"https:\/\/www.seltron.si\/en\/product-category\/heating\/heat-pumps\/\" target=\"_blank\" rel=\"noopener\"> heat pump<\/a> 1 more efficient than a heat pump 2. but is it true? The first heat pump achieves a COP of 4.2 at an air temperature of 10 \u00b0C and a heating water temperature of 35 \u00b0C. The second heat pump achieves a COP of 3.9 at an air temperature of 2 \u00b0C and a heating water temperature of 35 \u00b0C. Although the second heat pump has a lower COP, it achieves it at lower temperatures, which means better efficiency on an annual basis.<\/p><p>When reading the data, it is important to know which standard the COP was calculated according to. For air\/water heat pumps, manufacturers quote data according to the old EN 255\/3 standard and the new EN 14511. If we read the COP data for the same heat pump, the data calculated according to the new standard is significantly lower.<\/p><p>In summary, the COP is a figure that tells us how efficient a heat pump is under specific laboratory conditions. However, if we want more useful information for the user, we need to compare heat pumps by their annual efficiency factor.<\/p><h3>SCOP - Seasonal heating number<\/h3><p>The heating value is the ratio of the electricity input to the energy output produced by the heat pump over a period of one year.<\/p><h3>SPF - Annual Performance Factor<\/h3><p>The Seasonal Performance Factor is an indication of how efficient a heat pump is over a period of one year. The SPF is the ratio of the electricity input to the energy output of the heat pump over a period of one year, minus the energy used to operate the system. When calculating the annual efficiency factor, the energy consumed for space heating, domestic hot water production, operation of the heating circulator, auxiliary heating with an electric heater and the energy consumed for defrosting the outdoor unit shall be taken into account.<\/p><h3>The SPF annual efficiency factor is affected by:<\/h3><ul><li>Location of the facility,<\/li><li>Heating surface,<\/li><li>Correctly sized heat pump<\/li><li>Insulation of the building,<\/li><li>Heating mode,<\/li><li>Average room temperature,<\/li><li>Sanitary water consumption,<\/li><li>Sanitary water temperature.<\/li><\/ul><p>Manufacturers provide information on the annual efficiency factor based on general data. For a more accurate figure, it is advisable to obtain data on the efficiency factor in practice on Slovenian soil, in buildings similar to the investor's, before purchasing a heat pump.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>COP = Toplotna energija \/ Elektri\u010dna energija Kaj pomenijo podatki, ki jih navajajo proizvajalci toplotnih \u010drpalk in kako jih primerjati? COP &#8211; grelno \u0161tevilo Po definiciji grelno \u0161tevilo COP (Coefficient of Performance ) predstavlja razmerje med porabljeno elektri\u010dno energijo za delovanje toplotne \u010drpalke in pridobljeno toplotno energijo. COP \u2013 5 pomeni, da za 1 kWh [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":11490,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[206,977],"tags":[223,240,222,241],"class_list":["post-11486","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ogrevanje-s-toplotno-crpalko","category-ogrevanje-in-klimatizacija","tag-daikin","tag-hlajenje","tag-toplotna-crpalka","tag-varcno-ogrevanje"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"acf":[],"_links":{"self":[{"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/posts\/11486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/comments?post=11486"}],"version-history":[{"count":3,"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/posts\/11486\/revisions"}],"predecessor-version":[{"id":102170,"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/posts\/11486\/revisions\/102170"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/media\/11490"}],"wp:attachment":[{"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/media?parent=11486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/categories?post=11486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.seltron.si\/en\/wp-json\/wp\/v2\/tags?post=11486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}