{"id":13485,"date":"2025-08-26T16:30:28","date_gmt":"2025-08-26T16:30:28","guid":{"rendered":"https:\/\/ingenieriamasred.com\/?p=13485"},"modified":"2026-01-26T12:39:24","modified_gmt":"2026-01-26T12:39:24","slug":"comparison-ratings-air-source-heat-pumps","status":"publish","type":"post","link":"https:\/\/ingenieriamasred.com\/en\/comparison-ratings-air-source-heat-pumps\/","title":{"rendered":"Comparison and ratings of air source heat pumps"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Modern <\/span><b>air source heat pumps<\/b><span style=\"font-weight: 400;\"> (ASHPs) are a leading choice among those who want to heat and cool their homes efficiently and effectively.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This system extracts heat from the air outside, even in low temperatures, in order to deliver it indoors, with minimal energy use.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Finding the best model to meet the needs of a specific home and choosing a brand that is sturdy and durable are essential to getting the most out of this investment.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">What to look for in an air source heat pump<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">There are certain basic features that are worth reviewing when choosing: key efficiency metrics, noise levels, warranty, additional smart features, and installation compatibility with other systems.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Key efficiency metrics: SCOP, COP, and seasonal performance<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">There are two key technical performance and efficiency metrics: <\/span><b>SCOP<\/b><span style=\"font-weight: 400;\"> (<\/span><b>Seasonal Coefficient of Performance<\/b><span style=\"font-weight: 400;\">) and<\/span><b> COP<\/b><span style=\"font-weight: 400;\"> (<\/span><b>Coefficient of Performance<\/b><span style=\"font-weight: 400;\">).<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>COP<\/b><span style=\"font-weight: 400;\"> indicates the heat output \/ electrical input ratio under specific conditions. For example, a COP of 4 would mean the unit produces four units of heat for every unit of electricity consumed.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>SCOP<\/b><span style=\"font-weight: 400;\"> is similar, but it is focused on providing more accurate and realistic data, applying COP to varying temperatures to get an average coefficient. In cooling mode, efficiency is usually expressed with SEER (Seasonal Energy Efficiency Ratio) or HSPF (Heating Seasonal Performance Factor).\u00a0<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Noise levels, warranty, and smart features<\/span><\/h3>\n<p><b>Noise levels<\/b><span style=\"font-weight: 400;\"> are crucial for comfort. Modern ASHPs usually operate with low noise levels, but it is important to notice them when choosing where to install outdoor units.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">As for the<\/span><b> warranty,<\/b><span style=\"font-weight: 400;\"> each air source heat pump manufacturer offers a different period, often starting from 5 years.\u00a0<\/span><\/p>\n<p><b>Smart features <\/b><span style=\"font-weight: 400;\">can be useful to save energy and can also be particularly convenient. Wi-Fi connectivity, smart thermostats and adaptive inverter compressor technology are great to integrate with home automation.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Installation compatibility with heating systems<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">If you already have a heating system, such as <\/span><b>underfloor heating <\/b><span style=\"font-weight: 400;\">or <\/span><b>radiators<\/b><span style=\"font-weight: 400;\">, it is important to check if an ASHP is compatible with them.<\/span><b>\u00a0<\/b><\/p>\n<h2><span style=\"font-weight: 400;\">Air source heat pump comparison<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">How to compare between different ASHP models?<\/span><\/p>\n<h3><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-13492 size-large lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/residential-heat-pump-instalation-1066x800.webp\" alt=\"\" width=\"1066\" height=\"800\" \/><noscript><img decoding=\"async\" class=\"alignnone wp-image-13492 size-large lazyload\" src=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/residential-heat-pump-instalation-1066x800.webp\" alt=\"\" width=\"1066\" height=\"800\" srcset=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/residential-heat-pump-instalation-1066x800.webp 1066w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/residential-heat-pump-instalation-400x300.webp 400w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/residential-heat-pump-instalation-768x576.webp 768w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/residential-heat-pump-instalation.webp 1502w\" sizes=\"(max-width: 1066px) 100vw, 1066px\" \/><\/noscript><\/h3>\n<h3><span style=\"font-weight: 400;\">Residential vs commercial units<\/span><\/h3>\n<p><b>Residential ASHPs<\/b><span style=\"font-weight: 400;\"> typically offer heating capacities from 4 to 16 kW, and are suitable for single-family homes.\u00a0<\/span><\/p>\n<p><b>Commercial ASHP<\/b><span style=\"font-weight: 400;\"> models can exceed 30 kW, which supports multi-residential buildings or large offices. These often come with advanced features, such as <\/span><b>integrated backup heaters<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Ideal brands for different property types<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Most brands, such as Saunier-Duval, Mitsubishi, Fujitsu and Daikin, are suitable both for small and large homes and apartments while commercial applications usually require specific brands and models. Make sure there are installers and maintenance providers available in your area.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Cost vs performance<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Higher SCOP units may cost more upfront but will save more in long-term energy bills. When the budget is tight, balance efficiency with warranty and local service coverage, which might be key in the long run.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Air source heat pump ratings explained<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">How do energy ratings work and how important are them when comparing ASHPs?<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">How ratings work<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In Spain and the rest of the EU energy labels grade ASHPs from A to G. An A rating represents the highest efficiency achievable, while G is the lowest.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The energy rating label also includes other information, like<\/span><b> SCOP,<\/b> <b>SEER<\/b><span style=\"font-weight: 400;\">, noise levels, and sometimes a climate-specific rating.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Manufacturers often provide additional technical data, including <\/span><b>defrost cycle<\/b><span style=\"font-weight: 400;\"> performance, which are important for cold climate installations.<\/span><\/p>\n<h3><img decoding=\"async\" class=\"alignnone wp-image-13486 size-large lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/heat-pump-in-cold-weather-1066x800.webp\" alt=\"\" width=\"1066\" height=\"800\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13486 size-large lazyload\" src=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/heat-pump-in-cold-weather-1066x800.webp\" alt=\"\" width=\"1066\" height=\"800\" srcset=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/heat-pump-in-cold-weather-1066x800.webp 1066w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/heat-pump-in-cold-weather-400x300.webp 400w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/heat-pump-in-cold-weather-768x576.webp 768w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/heat-pump-in-cold-weather.webp 1333w\" sizes=\"(max-width: 1066px) 100vw, 1066px\" \/><\/noscript><\/h3>\n<h3><span style=\"font-weight: 400;\">Efficiency in cold weather vs mild climates<\/span><\/h3>\n<p><b>Low-temperature ASHPs<\/b><span style=\"font-weight: 400;\"> can still operate efficiently at below zero temperatures, but performance indicators drop as outdoor temperature decreases. In mild climates, however, efficiency stays high all year.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Reading manufacturer vs real-world performance data<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Manufacturer data is usually tested under controlled conditions, which means real results may vary depending on several conditions, such as the quality of the installation, system sizing and overall building insulation.\u00a0<\/span><\/p>\n<h2><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13488 size-large lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/air-source-heat-pump-vs-air-conditioner-1067x800.webp\" alt=\"\" width=\"1067\" height=\"800\" \/><noscript><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13488 size-large lazyload\" src=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/air-source-heat-pump-vs-air-conditioner-1067x800.webp\" alt=\"\" width=\"1067\" height=\"800\" srcset=\"https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/air-source-heat-pump-vs-air-conditioner-1067x800.webp 1067w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/air-source-heat-pump-vs-air-conditioner-400x300.webp 400w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/air-source-heat-pump-vs-air-conditioner-768x576.webp 768w, https:\/\/ingenieriamasred.com\/wp-content\/uploads\/2025\/08\/air-source-heat-pump-vs-air-conditioner.webp 1428w\" sizes=\"(max-width: 1067px) 100vw, 1067px\" \/><\/noscript><\/h2>\n<h2><span style=\"font-weight: 400;\">Air source heat pump vs air conditioner<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">What are the differences between an ASHP and air conditioner?<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Functionality and energy consumption<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">While both systems use refrigerant, <\/span><b>reversible heat pumps <\/b><span style=\"font-weight: 400;\">can heat and cool spaces, while air conditioners are designed just to cool areas. This means heat pumps are more efficient and minimise the need for two different systems.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Heating capabilities in winter<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Unlike standard air conditioners, ASHPs are optimized to provide heating in sub-zero conditions, with <\/span><b>defrost cycles<\/b><span style=\"font-weight: 400;\"> preventing frost build-up on the outdoor units.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Long-term cost and maintenance<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Both the equipment and installation of air conditioners may be more economical, but heat pumps are more efficient and can replace both <\/span><a href=\"\/en\/aerothermal-heating-cooling\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">heating and cooling systems<\/span><\/a><span style=\"font-weight: 400;\">, thus minimizing costs. Maintenance is similar for both.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Best air source heat pumps for underfloor heating<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">If you are looking for an <\/span><b>ASHP for underfloor heating<\/b><span style=\"font-weight: 400;\">, you must acknowledge different features.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Temperature requirements and system compatibility<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Underfloor heating (UFH) uses hot water running through pipes under the floor. The water is normally between 30 and 45\u00baC, depending on the temperature set.\u00a0<\/span><\/p>\n<p><b>Low-flow temperature heat pumps<\/b><span style=\"font-weight: 400;\"> are ideal for this heating system, as they offer high efficiency at lower temperatures.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Recommended brands and models for low-flow systems<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">In a Mediterranean climate, some recommended models, compatible with UFH are Vaillant aroTHERM plus or Mitsubishi Ecodan Low Temp.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Pros and cons compared to radiators<\/span><\/h3>\n<p><b>Pros:<\/b><span style=\"font-weight: 400;\"> Lower costs, even heat distribution, compatibility with renewable energy.<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Cons:<\/b><span style=\"font-weight: 400;\"> Slower heat-up time, requires insulation.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Final considerations when choosing a heat pump for your home<\/span><\/h2>\n<p><a href=\"\/en\/aerothermal\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">We evaluate your space to recommend the most suitable heat pump setup<\/span><\/a><span style=\"font-weight: 400;\">. Choosing the right air source heat pump requires considering many features and factors. It is an important investment for your home, so it is advisable to lean on expert knowledge.\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Modern air source heat pumps (ASHPs) are a leading choice among those who want to heat and cool their homes<\/p>\n","protected":false},"author":2,"featured_media":14283,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"categories":[136],"tags":[],"class_list":["post-13485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aerothermal-articles"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/posts\/13485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/comments?post=13485"}],"version-history":[{"count":4,"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/posts\/13485\/revisions"}],"predecessor-version":[{"id":14282,"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/posts\/13485\/revisions\/14282"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/media\/14283"}],"wp:attachment":[{"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/media?parent=13485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/categories?post=13485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ingenieriamasred.com\/en\/wp-json\/wp\/v2\/tags?post=13485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}