{"id":7992,"date":"2026-07-24T12:32:16","date_gmt":"2026-07-24T09:32:16","guid":{"rendered":"https:\/\/axinar.com\/blog\/pellet-burner-kw-selection-guide"},"modified":"2026-07-24T12:32:16","modified_gmt":"2026-07-24T09:32:16","slug":"pellet-burner-kw-selection-guide","status":"publish","type":"post","link":"https:\/\/axinar.com\/en\/blog\/pellet-burner-kw-selection-guide","title":{"rendered":"Pellet Burner 20\/30\/45\/75 to 150 kW: Power Selection Guide"},"content":{"rendered":"<p>When do you need a 30kW burner and when 60kW? Or 120kW for a mid-size hotel? Pellet burner sizing is not a simple &#8220;bigger is better&#8221;: an oversized burner runs continuously at low load, efficiency drops, flue emissions and soot go up. An undersized burner never catches up, runs constantly at 100%, and wears out early.<\/p>\n<p>This is a selection guide based on the AXINAR burner range: <strong>Apoplim AP20 \/ AP30 \/ AP45<\/strong> for homes, and <strong>Tsovea TS75 \/ TS95 \/ TS120 \/ TS150<\/strong> for larger installations.<\/p>\n<h2>How to calculate required power<\/h2>\n<p>The base equation is:<\/p>\n<p><strong>Required power (kW) = Area (sqm) \u00d7 Insulation factor (W\/sqm)<\/strong><\/p>\n<p>The factor depends on insulation:<\/p>\n<ul>\n<li><strong>Good insulation<\/strong> (new home rated A+ or A): 60 to 80 W\/sqm<\/li>\n<li><strong>Average insulation<\/strong> (building from 2000 to 2010, KENAK or original Exoikonomo standard): 100 to 130 W\/sqm<\/li>\n<li><strong>Poor insulation<\/strong> (old building, single glazing, minimal insulation): 150 to 200 W\/sqm<\/li>\n<\/ul>\n<h2>AP20 (20 kW): for apartments and small homes<\/h2>\n<ul>\n<li><strong>Fits:<\/strong> 80 to 150 sqm with average insulation, 100 to 200 sqm with good insulation<\/li>\n<li><strong>Automation:<\/strong> auger auto cleaning<\/li>\n<li><strong>Typical use:<\/strong> single-family homes in Thessaloniki, Larissa, mountain areas replacing an oil burner<\/li>\n<\/ul>\n<h2>AP30 (30 kW): the most common size<\/h2>\n<ul>\n<li><strong>Fits:<\/strong> 150 to 250 sqm with average insulation, 200 to 350 sqm with good insulation<\/li>\n<li><strong>Automation:<\/strong> auger auto cleaning<\/li>\n<li><strong>Typical use:<\/strong> mid-size single-family homes, maisonettes, small businesses<\/li>\n<\/ul>\n<h2>AP45 (45 kW): large homes or small apartment blocks<\/h2>\n<ul>\n<li><strong>Fits:<\/strong> 250 to 400 sqm with average insulation<\/li>\n<li><strong>Automation:<\/strong> auger auto cleaning<\/li>\n<li><strong>Typical use:<\/strong> guesthouses, apartment blocks with central heating, small event halls<\/li>\n<\/ul>\n<h2>TS75 (75 kW) and TS95 (95 kW): commercial spaces<\/h2>\n<ul>\n<li><strong>Fits:<\/strong> 500 to 900 sqm of commercial space<\/li>\n<li><strong>Automation:<\/strong> double auger auto cleaning<\/li>\n<li><strong>Typical use:<\/strong> hotels, gyms, greenhouses, small industrial spaces<\/li>\n<\/ul>\n<h2>TS120 (120 kW) and TS150 (150 kW): industrial spaces<\/h2>\n<ul>\n<li><strong>Fits:<\/strong> >1000 sqm industrial or greenhouse applications<\/li>\n<li><strong>Automation:<\/strong> double auger auto cleaning<\/li>\n<li><strong>Typical use:<\/strong> factories, large agricultural facilities, tourism resorts<\/li>\n<\/ul>\n<h2>Quick selection table<\/h2>\n<table>\n<thead>\n<tr>\n<th>Area<\/th>\n<th>Insulation<\/th>\n<th>Recommended<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>80 to 150 sqm<\/td>\n<td>Average<\/td>\n<td>AP20<\/td>\n<\/tr>\n<tr>\n<td>100 to 200 sqm<\/td>\n<td>Good<\/td>\n<td>AP20<\/td>\n<\/tr>\n<tr>\n<td>150 to 250 sqm<\/td>\n<td>Average<\/td>\n<td>AP30<\/td>\n<\/tr>\n<tr>\n<td>250 to 400 sqm<\/td>\n<td>Average<\/td>\n<td>AP45<\/td>\n<\/tr>\n<tr>\n<td>500 to 700 sqm<\/td>\n<td>Any<\/td>\n<td>TS75<\/td>\n<\/tr>\n<tr>\n<td>700 to 1000 sqm<\/td>\n<td>Any<\/td>\n<td>TS95<\/td>\n<\/tr>\n<tr>\n<td>1000 to 1400 sqm<\/td>\n<td>Any<\/td>\n<td>TS120<\/td>\n<\/tr>\n<tr>\n<td>1400+ sqm<\/td>\n<td>Any<\/td>\n<td>TS150<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Factors that shift the choice<\/h2>\n<h3>Number of hot water points<\/h3>\n<p>If the burner also serves domestic hot water (300+ L tank, multiple bathrooms), add 8 to 10 kW for recovery.<\/p>\n<h3>Underfloor vs radiators<\/h3>\n<p>Underfloor heating runs at lower water temperature (35 to 45\u00b0C), and the burner runs more efficiently. Rated power doesn&#8217;t change, but load rate is steadier.<\/p>\n<h3>Operating hours<\/h3>\n<p>If the burner runs only 6 to 8 hours a day (e.g. commercial space with overnight shutdown), you can pick a slightly larger size for faster recovery.<\/p>\n<h3>Ceiling height<\/h3>\n<p>A space with 4 to 5 meter ceilings (warehouse, greenhouse) needs 30 to 50% more power than a home of the same area.<\/p>\n<div style=\"border:1px solid rgba(221,43,28,.28);border-radius:10px;padding:22px;margin:26px 0;background:rgba(255,255,255,.02);\">\n<div style=\"margin-bottom:14px;\">\n<div style=\"font-family:'Barlow Condensed', sans-serif;font-size:1.35rem;font-weight:700;line-height:1.15;margin-bottom:2px;color:#ffffff;\">AXINAR Pellet Burners<\/div>\n<div style=\"opacity:.85;font-size:.92rem;color:#ffffff;\">Full range 20kW to 150kW with automatic cleaning<\/div>\n<\/p><\/div>\n<div>\n<p style=\"margin:0 0 12px 0;line-height:1.55;color:#ffffff;\">AXINAR&#8217;s Apoplim and Tsovea series cover every installation size, from a 100 sqm apartment to a 2000 sqm industrial space.<\/p>\n<ul style=\"margin:0 0 14px 0;padding-left:20px;color:#ffffff;\">\n<li style=\"margin-bottom:6px;\">AP20 \/ AP30 \/ AP45 with single auger auto cleaning for homes<\/li>\n<li style=\"margin-bottom:6px;\">TS75 \/ TS95 \/ TS120 \/ TS150 with double auger auto cleaning for commercial<\/li>\n<li style=\"margin-bottom:6px;\">Analog power modulation for maximum efficiency<\/li>\n<li style=\"margin-bottom:6px;\">Compatible with all oil boilers<\/li>\n<\/ul>\n<p>    <a href=\"\/en\/c\/burners\" style=\"display:inline-block !important;background:#dd2b1c !important;color:#ffffff !important;font-family:Barlow Condensed, sans-serif !important;font-size:.9rem !important;font-weight:700 !important;text-transform:uppercase !important;letter-spacing:1.2px !important;padding:10px 22px !important;border-radius:6px !important;text-decoration:none !important;margin-top:10px;\">See the range \u2192<\/a>\n  <\/div>\n<\/div>\n<h2>Request a quote<\/h2>\n<p>Tell us: square meters, insulation type, operating hours, presence of domestic hot water. We reply with a burner proposal within 24 hours.<\/p>\n<p><a href=\"\/en\/contact\" style=\"display:inline-block !important;background:#dd2b1c !important;color:#ffffff !important;font-family:Barlow Condensed, sans-serif !important;font-size:1rem !important;font-weight:700 !important;text-transform:uppercase !important;letter-spacing:1.5px !important;padding:12px 28px !important;border-radius:8px !important;text-decoration:none !important;margin-top:8px;\">Contact us \u2192<\/a><\/p>\n<hr>\n<p><em>See also: <a href=\"\/en\/blog\/boiler-power-per-square-meter-guide\">Complete boiler power per square meter guide<\/a>, <a href=\"\/en\/blog\/pellet-burner-vs-pellet-boiler\">Pellet burner vs complete pellet boiler<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>When do you need a 30kW burner and when 60kW? Or 120kW for a mid-size hotel? Pellet burner sizing is [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":2211,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"rank_math_title":"Pellet Burner by kW: 20, 30, 45, 75 to 150 kW | AXINAR","rank_math_description":"How to select the right pellet burner power by square meters. AP20\/30\/45 for homes, TS75\/95\/120\/150 for commercial and larger installations.","footnotes":""},"categories":[176],"tags":[],"class_list":["post-7992","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts\/7992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/comments?post=7992"}],"version-history":[{"count":0,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts\/7992\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/media\/2211"}],"wp:attachment":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/media?parent=7992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/categories?post=7992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/tags?post=7992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}