{"id":14640,"date":"2026-10-23T17:05:52","date_gmt":"2026-10-23T15:05:52","guid":{"rendered":"https:\/\/templari.com\/heat-pump-maintenance-servicing\/"},"modified":"2026-10-26T12:41:06","modified_gmt":"2026-10-26T11:41:06","slug":"heat-pump-maintenance-servicing","status":"publish","type":"post","link":"https:\/\/templari.com\/en\/news\/heat-pump-maintenance-servicing\/","title":{"rendered":"Heat pump maintenance and servicing: what to do, how often, and how long a heat pump lasts"},"content":{"rendered":"<div id=\"aa\">\n<style>body:has(#aa){overflow:visible!important;overflow-x:clip!important}body:has(#aa) .featured-media-under-header{display:none!important}body:has(#aa) .container-wrap{padding:0!important;background:#000!important}body:has(#aa) .container-wrap .main-content,body:has(#aa) .main-content>.row,body:has(#aa) .post-area,body:has(#aa) article.post,body:has(#aa) article .inner-wrap,body:has(#aa) .post-content,body:has(#aa) 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summary{list-style:none;cursor:pointer;font-size:19px;font-weight:600;color:#fff;display:flex;justify-content:space-between;gap:18px}#aa .chiara summary{color:#051822}#aa summary::-webkit-details-marker{display:none}#aa summary:after{content:\"+\";color:#0BABE4;font-size:26px;line-height:1;font-weight:400}#aa .chiara summary:after{color:#05587a}#aa details[open] summary:after{content:\"\\2212\"}#aa details p{margin:12px 0 0}#aa .larga,#aa .fine .wrap{max-width:1160px}@media(min-width:1000px){#aa .duo .larga{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:56px;align-items:start}#aa .duo.inv .testo{order:2}#aa .duo .foto{position:sticky;top:190px}#aa .duo .foto figure{margin:0 0 26px}#aa .duo .foto figure:last-child{margin-bottom:0}#aa .duo .foto img{max-height:72vh}#aa .duo.senza .larga{grid-template-columns:minmax(0,1fr) minmax(0,1.6fr)}#aa .duo.senza .testa{position:sticky;top:190px}}body:has(#aa) #header-outer{background:#000!important}#aa .fine{padding:36px 0 52px}#aa .fine p{font-size:16px}@media(max-width:820px){#aa{font-size:18px}#aa p,#aa li{font-size:18px}#aa .hero{min-height:auto}#aa .hero .in{padding:96px 20px 32px}#aa .lead{font-size:18px}#aa .sec{padding:40px 0}#aa .wrap{padding:0 20px}#aa .subnav{top:64px}#aa .faq .wrap{grid-template-columns:1fr;gap:8px}}<\/style>\n<section class=\"hero\" style=\"background-image:url(https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/manutenzione-pompa-di-calore-neve-svizzera.jpg)\">\n<div class=\"in\"><span class=\"badge\">Technical tips<\/span><\/p>\n<h1>Heat pump maintenance and servicing: what to do, how often, and how long a heat pump lasts<\/h1>\n<p class=\"lead\">A heat pump has no flame, no flue gas, no chimney and no burner, so it needs less maintenance than a boiler, but not none. This article explains what actually wears, what the owner can do, what the engineer must do and how often, and what the rules require. It applies to a home with an air-to-water heat pump and to a factory heated and cooled by a Kita Air.<\/p>\n<\/div>\n<\/section>\n<div class=\"subnav\">\n<nav><a href=\"#s1\">What wears in a heat pump<\/a><a href=\"#s2\">How often should a heat pump be serviced<\/a><a href=\"#s3\">What the owner can do<\/a><a href=\"#s4\">What the engineer does<\/a><a href=\"#s5\">What the rules require<\/a><a href=\"#s6\">How long does a heat pump last<\/a><a href=\"#s7\">In business: the Kita Air<\/a><a href=\"#s8\">Mistakes to avoid<\/a><a href=\"#s9\">Frequently asked questions<\/a><\/nav>\n<\/div>\n<section id=\"s1\" class=\"sec duo senza\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">01<\/p>\n<h2>What wears in a heat pump<\/h2>\n<\/div>\n<div class=\"testo\">\n<p>The compressor is sealed and runs within its limits: it is not overhauled. The parts that need attention are the ones in contact with air and water: the outdoor coil, which collects leaves, dust and pollen and frosts up in winter; the fan; the condensate drain, which can block or freeze in winter; the system filter (dirt separator) and, in air-to-air units, the filter of the indoor unit. A dirty coil transfers less heat: the unit runs longer for the same result, defrosts more often and uses more electricity. It is the same mechanism we explain in the <a href=\"https:\/\/templari.com\/en\/news\/heat-pump-timed-or-demand-defrost\/\" rel=\"noreferrer\">article on defrosting<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s2\" class=\"sec duo senza chiara\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">02<\/p>\n<h2>How often should a heat pump be serviced<\/h2>\n<\/div>\n<div class=\"testo\">\n<p>Once a year, before winter, is the rule for a heat pump that only heats. If the same unit also cools in summer, like the Kita Air in factories, the manual calls for two checks a year, one per season. Where there is dust, chips, pollen or smog the coil needs checking more often: in a workshop or a joinery even every three months.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s3\" class=\"sec duo\">\n<div class=\"wrap larga\">\n<div class=\"testo\">\n<p class=\"num\">03<\/p>\n<h2>What the owner can do<\/h2>\n<ul>\n<li>Keep the outdoor unit clear: no leaves, long grass, snow or objects in front of the fan or behind the coil. Air has to flow.<\/li>\n<li>Check that condensate drains away: in winter there should be water or ice on the ground under the unit, not inside it.<\/li>\n<li>In air-to-air units, clean the indoor unit filter, which slides out without tools.<\/li>\n<li>There is no need to check the water pressure of the system by hand: on our air-to-water units the machine measures it with a pressure transducer. If the pressure drops the heat pump raises an alarm; if it drops too far, it stops before running without water.<\/li>\n<li>Do not bend the coil fins and do not use a pressure washer: the fins are sharp and, once bent, reduce output.<\/li>\n<li>Before any work, switch off the main isolator: the unit can restart on its own.<\/li>\n<\/ul>\n<\/div>\n<div class=\"foto\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/pompa-di-calore-unita-esterna-parete-manutenzione.jpg\" class=\"lazyload\" alt=\"Outdoor unit in front of a factory: free space all around and nothing on top, because air has to flow\" width=\"1600\" height=\"1067\" loading=\"lazy\"><noscript><img decoding=\"async\" src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/pompa-di-calore-unita-esterna-parete-manutenzione.jpg\" alt=\"Outdoor unit in front of a factory: free space all around and nothing on top, because air has to flow\" width=\"1600\" height=\"1067\" loading=\"lazy\"><\/noscript><figcaption>Outdoor unit in front of a factory: free space all around and nothing on top, because air has to flow.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s4\" class=\"sec duo senza chiara\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">04<\/p>\n<h2>What the engineer does<\/h2>\n<\/div>\n<div class=\"testo\">\n<p>The manual of our air-to-water units calls for, every 12 months: cleaning the coil fins, fan blades and grille with compressed air, blown along the fins; checking that the condensate drain is not blocked and cleaning the tray; checking and cleaning the magnetic dirt separator; leak testing the refrigerant circuit with a detector; checking the electrical connections; inspecting pipework for corrosion and leaks. Every 3 years the anti-vibration mounts. On the Kita Air the engineer also cleans the indoor unit coil and replaces the refrigerant safety valve every 4 years. On all units the engineer reads the alarm history and operating temperatures from the controller: that is where you see whether the unit has defrosted too often or worked outside its conditions.<\/p>\n<p>The refrigerant circuit is not opened during routine maintenance. If work is needed, on propane R290 units the manual requires a refrigeration engineer qualified for flammable refrigerants (EN 378-4 or IEC 60335-2-40) and trained by us.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s5\" class=\"sec duo\">\n<div class=\"wrap larga\">\n<div class=\"testo\">\n<p class=\"num\">05<\/p>\n<h2>What the rules require<\/h2>\n<ul>\n<li><strong>F-gas rules.<\/strong> They apply only to fluorinated gases. Our propane R290 air-to-water units are outside them: no periodic leak checks, no records. The Kita Air runs on R32, a fluorinated gas: in the EU (Regulation 2024\/573) and in Great Britain the annual leak check and the records start above 5 tonnes of CO\u2082 equivalent, which is above 7.4 kg of R32. The Kita Air holds 7.4 kg and stays just below; the Kita Air Plus (8 kg) and the ducted version (8.4 kg) are above: one check a year by a certified engineer, with records.<\/li>\n<li><strong>National rules.<\/strong> Periodic inspections of heating systems differ from country to country: in Italy, for example, every system needs a logbook and, from 12 kW, an efficiency check every 4 years. Ask your installer what applies where you are.<\/li>\n<\/ul>\n<\/div>\n<div class=\"foto\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/manutenzione-pompa-di-calore-chi-fa-cosa-en.jpg\" class=\"lazyload\" alt=\"Heat pump maintenance: who does what, and how often\" width=\"760\" height=\"1210\" loading=\"lazy\"><noscript><img decoding=\"async\" src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/manutenzione-pompa-di-calore-chi-fa-cosa-en.jpg\" alt=\"Heat pump maintenance: who does what, and how often\" width=\"760\" height=\"1210\" loading=\"lazy\"><\/noscript><figcaption>Heat pump maintenance: who does what, and how often.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s6\" class=\"sec duo senza chiara\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">06<\/p>\n<h2>How long does a heat pump last<\/h2>\n<\/div>\n<div class=\"testo\">\n<p>A heat pump that is used well lasts about 20 years. Used well means above all one thing: how hard the compressor has to squeeze, that is the ratio between outlet and inlet pressure. With well-sized underfloor heating the water runs at 30-35 \u00b0C, the compressor works lightly and ages slowly. With radiators at 55 \u00b0C and hot water at 60-70 \u00b0C the pressure lift is higher and the compressor uses up its life faster; in the <a href=\"https:\/\/templari.com\/en\/news\/heat-pump-with-radiators-does-it-work\/\" rel=\"noreferrer\">article on radiators<\/a> we explain how to keep the flow temperature low.<\/p>\n<p>Parts that wear, such as the fan, circulating pump, valves and sensors, are replaced. What shortens the life is years of running badly: a dirty coil, air or sludge in the system, an oversized unit that keeps starting and stopping. That is why correct sizing, which we cover in the <a href=\"https:\/\/templari.com\/en\/news\/heat-pump-inverter-sizing-half-capacity\/\" rel=\"noreferrer\">article on the inverter<\/a>, is also maintenance.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s7\" class=\"sec duo\">\n<div class=\"wrap larga\">\n<div class=\"testo\">\n<p class=\"num\">07<\/p>\n<h2>In business: the Kita Air<\/h2>\n<p>In a factory, maintenance is part of production: a unit that heats in winter and cools in summer works all year. Two visits a year, before summer and before winter; indoor unit filters cleaned more often where there is process dust; for the Plus and ducted versions the annual F-gas check with records. Our dealers offer a maintenance contract with scheduled visits and, where needed, the F-gas check: businesses with a factory running all year usually take it.<\/p>\n<\/div>\n<div class=\"foto\">\n<figure class=\"wp-block-image size-large\" style=\"max-width:560px;margin-left:auto;margin-right:auto\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/kita-air-unita-interna-capannone-manutenzione.jpg\" class=\"lazyload\" alt=\"Kita Air indoor unit in a factory: where there is process dust, the filters are cleaned more often\" width=\"1365\" height=\"2048\" loading=\"lazy\"><noscript><img decoding=\"async\" src=\"https:\/\/templari.com\/wp-content\/uploads\/2026\/10\/kita-air-unita-interna-capannone-manutenzione.jpg\" alt=\"Kita Air indoor unit in a factory: where there is process dust, the filters are cleaned more often\" width=\"1365\" height=\"2048\" loading=\"lazy\"><\/noscript><figcaption>Kita Air indoor unit in a factory: where there is process dust, the filters are cleaned more often.<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s8\" class=\"sec duo senza chiara\">\n<div class=\"wrap larga\">\n<div class=\"testa\">\n<p class=\"num\">08<\/p>\n<h2>Mistakes to avoid<\/h2>\n<\/div>\n<div class=\"testo\">\n<ul>\n<li>Cleaning the coil with a pressure washer or a brush: bent fins, lost output.<\/li>\n<li>Boxing in the outdoor unit with hedges, covers or roofs to protect it: it suffocates.<\/li>\n<li>Ignoring an alarm that keeps coming back: the controller logs it, the engineer reads it.<\/li>\n<li>Letting someone open the refrigerant circuit without the qualification for that gas.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<section id=\"s9\" class=\"sec faq\">\n<div class=\"wrap\">\n<div>\n<p class=\"num\">09<\/p>\n<h2>Frequently asked questions<\/h2>\n<\/div>\n<div>\n<details>\n<summary>How often should a heat pump be serviced?<\/summary>\n<p>Once a year if it only heats, twice if it also cools in summer; more often where there is dust.<\/p>\n<\/details>\n<details>\n<summary>Is heat pump servicing a legal requirement?<\/summary>\n<p>The F-gas leak check is required only for fluorinated gases above 5 tonnes of CO\u2082 equivalent: propane R290 heat pumps are outside it. Other periodic inspections depend on national rules: ask your installer.<\/p>\n<\/details>\n<details>\n<summary>Can I clean my heat pump myself?<\/summary>\n<p>The outside, yes: leaves, snow, the indoor unit filter, checking the condensate drain. The machine watches the water pressure and raises an alarm if it drops. The coil fins and everything behind the panels are for the engineer, with the power off.<\/p>\n<\/details>\n<details>\n<summary>How long does a heat pump last?<\/summary>\n<p>Used well, about 20 years. It lasts longer with well-sized underfloor heating, where the compressor works lightly, and less with high-temperature radiators and a lot of hot water at 60-70 \u00b0C, where the pressure lift is higher.<\/p>\n<\/details>\n<details>\n<summary>Who services a Templari heat pump?<\/summary>\n<p>Our dealers, also under contract: scheduled visits and the F-gas check where needed.<\/p>\n<\/details>\n<details>\n<summary>What happens if I do not service my heat pump?<\/summary>\n<p>Rising consumption, more frequent defrosting, noise, and sooner or later a breakdown in winter.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"fine chiara\">\n<div class=\"wrap\">\n<p class=\"tpl-vedi-anche\"><strong>See also:<\/strong> <a href=\"https:\/\/templari.com\/en\/news\/heat-pump-buffer-tank\/\" rel=\"noreferrer\">Heat pump buffer tank: is it needed, which type, what size and which to avoid<\/a> \u00b7 <a href=\"https:\/\/templari.com\/en\/news\/heat-pump-noise\/\" rel=\"noreferrer\">Heat pump noise: how many decibels, how far from the neighbours and why it is louder in winter<\/a> \u00b7 <a href=\"https:\/\/templari.com\/en\/news\/heat-pump-installation\/\" rel=\"noreferrer\">Heat pump installation: where to put it, what you need and how it is done, step by step<\/a> \u00b7 <a href=\"https:\/\/templari.com\/en\/news\/how-long-do-heat-pumps-last\/\" rel=\"noreferrer\">How long do heat pumps last: years of service, what wears out and what makes them last longer<\/a> \u00b7 <a href=\"https:\/\/templari.com\/en\/news\/heat-pump-not-heating-problems\/\" rel=\"noreferrer\">Heat pump not heating or using too much electricity: the real causes and what to check<\/a><\/p>\n<p><em>All the technical tips are on the <a href=\"https:\/\/templari.com\/en\/technical-tips\/\" rel=\"noreferrer\">series page<\/a>. The next one in two weeks.<\/em><\/p>\n<\/div>\n<\/section>\n<\/div>\n<p><script>(function(){var a=[].slice.call(document.querySelectorAll('#aa .subnav a')),n=document.querySelector('#aa .subnav'),h=document.getElementById('header-outer');function u(){if(n&&h)n.style.top=Math.max(0,h.getBoundingClientRect().bottom)+'px';var y=window.scrollY+200,c=null;a.forEach(function(l){var s=document.querySelector(l.getAttribute('href'));if(s&&s.offsetTop<=y)c=l});a.forEach(function(l){l.classList.toggle('on',l===c)});if(c&#038;&#038;c!==u.c){u.c=c;c.parentNode.scrollTo({left:c.offsetLeft-20,behavior:'smooth'})}}window.addEventListener('scroll',function(){u();setTimeout(u,400)},{passive:true});u()})();<\/script><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How often should a heat pump be serviced?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Once a year if it only heats, twice if it also cools in summer; more often where there is dust.\"}}, {\"@type\": \"Question\", \"name\": \"Is heat pump servicing a legal requirement?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The F-gas leak check is required only for fluorinated gases above 5 tonnes of CO\\u2082 equivalent: propane R290 heat pumps are outside it. 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It lasts longer with well-sized underfloor heating, where the compressor works lightly, and less with high-temperature radiators and a lot of hot water at 60-70 \\u00b0C, where the pressure lift is higher.\"}}, {\"@type\": \"Question\", \"name\": \"Who services a Templari heat pump?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Our dealers, also under contract: scheduled visits and the F-gas check where needed.\"}}, {\"@type\": \"Question\", \"name\": \"What happens if I do not service my heat pump?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Rising consumption, more frequent defrosting, noise, and sooner or later a breakdown in winter.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Technical tips Heat pump maintenance and servicing: what to do, how often, and how long a heat pump lasts A heat pump has no flame, no flue gas, no chimney&#8230;<\/p>\n","protected":false},"author":3,"featured_media":14615,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_meta-robots-noindex":"","footnotes":""},"categories":[201],"tags":[],"class_list":["post-14640","post","type-post","status-publish","format-standard","has-post-thumbnail","category-technical-tips"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Air source heat pump maintenance and servicing: how often<\/title>\n<meta name=\"description\" content=\"Heat pump maintenance: what wears, what the owner and the engineer do, how often to service, what the F-gas rules require and how long a heat pump lasts.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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