{"id":8421,"date":"2026-07-26T01:06:37","date_gmt":"2026-07-26T01:06:37","guid":{"rendered":"https:\/\/drakemarine.com\/marine-ac-btu-calculator\/"},"modified":"2026-09-29T01:47:26","modified_gmt":"2026-09-29T01:47:26","slug":"%d0%ba%d0%b0%d0%bb%d1%8c%d0%ba%d1%83%d0%bb%d1%8f%d1%82%d0%be%d1%80-%d1%82%d0%b5%d0%bf%d0%bb%d0%be%d0%b2%d0%be%d0%b9-%d1%8d%d0%bd%d0%b5%d1%80%d0%b3%d0%b8%d0%b8-%d0%b4%d0%bb%d1%8f-%d0%bc%d0%be%d1%80","status":"publish","type":"page","link":"https:\/\/drakemarine.com\/ru\/marine-ac-btu-calculator\/","title":{"rendered":"\u041a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440 \u0442\u0435\u043f\u043b\u043e\u0432\u043e\u0439 \u043c\u043e\u0449\u043d\u043e\u0441\u0442\u0438 \u043c\u043e\u0440\u0441\u043a\u0438\u0445 \u043a\u043e\u043d\u0434\u0438\u0446\u0438\u043e\u043d\u0435\u0440\u043e\u0432 (\u0432 \u0411\u0422\u0415)"},"content":{"rendered":"<p>Sized for a Thai April, not a Baltic June \u2014 cabin measurements in, the right marine air conditioning capacity out.<\/p>\n<style>\n.dm-tool{max-width:880px;margin:0 auto;padding:8px 0 40px;color:#12395e;font-family:'DM Sans',Helvetica,Arial,sans-serif}\n.dm-tool .card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:26px;margin:18px 0}\n.dm-tool h2{margin:0 0 6px;font-size:1.25rem}\n.dm-tool .hint{color:#5b7186;font-size:.9rem;margin:0 0 18px}\n.dm-tool label{display:block;font-weight:700;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase;color:#41586e;margin:16px 0 6px}\n.dm-tool select,.dm-tool input[type=number]{width:100%;max-width:340px;padding:11px 12px;border:1.5px solid #cbd5e1;border-radius:9px;font-size:1rem;font-family:inherit;background:#fff;color:#12395e}\n.dm-tool .grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0 24px}\n.dm-tool button.go{background:#00A8FF;color:#04263f;font-weight:800;font-size:1rem;border:0;border-radius:10px;padding:14px 28px;margin-top:22px;cursor:pointer;font-family:inherit}\n.dm-tool button.go:hover{background:#0b8ed4}\n.dm-tool .result{display:none;border-top:4px solid #00A8FF}\n.dm-tool .pick{background:#eef5fb;border:1px solid #cfe0ef;border-radius:10px;padding:16px 18px;margin-bottom:14px}\n.dm-tool .pick .big{font-size:1.3rem;font-weight:800}\n.dm-tool .pick .sku{font-size:.85rem;color:#5b7186}\n.dm-tool table{width:100%;border-collapse:collapse;font-size:.95rem}\n.dm-tool td{padding:9px 10px;border-bottom:1px solid #eef2f6;vertical-align:top}\n.dm-tool td:first-child{font-weight:700;width:38%}\n.dm-tool .note{font-size:.85rem;color:#5b7186;margin-top:14px;line-height:1.5}\n.dm-tool .cta{background:#12395e;border-radius:12px;padding:22px;color:#f6f4ed;margin-top:18px;text-align:center}\n.dm-tool .cta a.b{display:inline-block;background:#00A8FF;color:#04263f;font-weight:800;border-radius:9px;padding:12px 22px;text-decoration:none;margin:8px 6px 0}\n.dm-tool .cta a.w{display:inline-block;background:#f6f4ed;color:#12395e;font-weight:800;border-radius:9px;padding:12px 22px;text-decoration:none;margin:8px 6px 0}\n<\/style>\n<div class=\"dm-tool\" id=\"dm-btu-tool\">\n<div class=\"card\">\n<h2>Size air conditioning for your cabin<\/h2>\n<p class=\"hint\">Built for the tropics \u2014 we size for a Thai April, not a Baltic June. One calculation per cabin or zone.<\/p>\n<div class=\"grid2\">\n<div><label for=\"ac-l\">Cabin length (m)<\/label><input type=\"number\" id=\"ac-l\" min=\"1\" max=\"20\" step=\"0.1\" value=\"4\"><\/div>\n<div><label for=\"ac-w\">Cabin width (m)<\/label><input type=\"number\" id=\"ac-w\" min=\"1\" max=\"10\" step=\"0.1\" value=\"3\"><\/div>\n<div><label for=\"ac-h\">Headroom (m)<\/label><input type=\"number\" id=\"ac-h\" min=\"1.4\" max=\"3\" step=\"0.05\" value=\"2\"><\/div>\n<div><label for=\"ac-sun\">How much sun does the space get?<\/label><br \/>\n      <select id=\"ac-sun\"><option value=\"below\">Below deck \u2014 hull-side or shaded<\/option><option value=\"mid\" selected>Mid \u2014 some ports &amp; hatches<\/option><option value=\"glass\">Deck saloon \/ wheelhouse \u2014 lots of glass<\/option><\/select><\/div>\n<div><label for=\"ac-occ\">Normal occupancy<\/label><br \/>\n      <select id=\"ac-occ\"><option value=\"2\" selected>1\u20132 people<\/option><option value=\"4\">3\u20134 people<\/option><option value=\"6\">5+ people \/ galley in the space<\/option><\/select><\/div>\n<\/p><\/div>\n<p>    <button class=\"go\" type=\"button\" onclick=\"dmBtuCalc()\">Size my unit<\/button>\n  <\/div>\n<div class=\"card result\" id=\"ac-result\">\n<h2>Your air conditioning size<\/h2>\n<div class=\"pick\" id=\"ac-pick\"><\/div>\n<table>\n<tbody id=\"ac-rows\"><\/tbody>\n<\/table>\n<p class=\"note\">Rule-of-thumb sizing for tropical Southeast Asia, using the marine standard of BTU per cubic foot with sun and occupancy factors. Under-sized units run flat out and never pull humidity; slightly over-sized is the right side to err on out here. Self-contained seawater-cooled units are the usual fit up to ~45 ft; bigger boats and multi-cabin builds move to air handlers or chilled water \u2014 we spec both.<\/p>\n<div class=\"cta\">\n      <strong style=\"font-size:1.05rem\">Get a quote for this cabin<\/strong><br \/>\n      <span style=\"color:#c9d6e2;font-size:.92rem\">Our self-contained marine units are seawater-cooled, R410a, 230 V 50 Hz, CE marked \u2014 built for exactly this climate. Email us the numbers below and we&#8217;ll quote the unit, seawater kit and install parts.<\/span><br \/>\n      <a class=\"b\" id=\"ac-mail\" href=\"#\">Email us for a quote<\/a><br \/>\n      <a class=\"w\" href=\"\/product-category\/air-conditioning\/\">See marine A\/C<\/a>\n    <\/div>\n<\/p><\/div>\n<\/div>\n<p><script>\nfunction dmBtuCalc(){\n  var L=parseFloat(document.getElementById('ac-l').value)||4;\n  var W=parseFloat(document.getElementById('ac-w').value)||3;\n  var H=parseFloat(document.getElementById('ac-h').value)||2;\n  var sun=document.getElementById('ac-sun').value;\n  var occ=parseInt(document.getElementById('ac-occ').value,10)||2;\n  var volFt=L*W*H*35.315;\n  var base=volFt*14;                                  \/\/ marine BTU\/ft\u00b3 baseline\n  var f = sun==='glass'?1.25 : sun==='below'?0.95 : 1.1;\n  var btu=base*f*1.15;                                \/\/ tropical uplift\n  btu+=Math.max(0,occ-2)*600;                         \/\/ people beyond a couple\n  var MODELS=[\n    {m:'DM-MAC-07', btu:7000},\n    {m:'DM-MAC-09', btu:9000},\n    {m:'DM-MAC-10', btu:10000},\n    {m:'DM-MAC-12', btu:12000},\n    {m:'DM-MAC-16', btu:16000},\n    {m:'DM-MAC-24', btu:24000}];\n  var pick=null;\n  for(var i=0;i<MODELS.length;i++){if(MODELS[i].btu>=btu){pick=MODELS[i];break;}}\n  var pickEl=document.getElementById('ac-pick');\n  if(pick){\n    pickEl.innerHTML='<\/p>\n<div class=\"big\">'+pick.btu.toLocaleString()+' BTU \u2014 Drake Marine '+pick.m+'<\/div>\n<div class=\"sku\">Self-contained &middot; seawater cooled &middot; 230 V 50 Hz &middot; calculated need &asymp; '+Math.round(btu\/100)*100+' BTU<\/div>\n<p>';\n  }else{\n    pickEl.innerHTML='<\/p>\n<div class=\"big\">&asymp; '+(Math.round(btu\/500)*500).toLocaleString()+' BTU \u2014 beyond a single self-contained unit<\/div>\n<div class=\"sku\">This space wants two units, an air handler split, or chilled water \u2014 email us, we\\'ll design it.<\/div>\n<p>';\n  }\n  var rows=[\n    ['Cabin volume',(L*W*H).toFixed(1)+' m&sup3; ('+Math.round(volFt)+' ft&sup3;)'],\n    ['Sun exposure',sun==='glass'?'Deck saloon \/ lots of glass (+25%)':sun==='below'?'Below deck, shaded (\u22125%)':'Typical ports &amp; hatches (+10%)'],\n    ['Tropical allowance','+15% \u2014 sized for 35&deg;C, 80% humidity days'],\n    ['Occupancy',occ<=2?'1\u20132 people':occ+' people (+'+(Math.max(0,occ-2)*600)+' BTU)']\n  ];\n  var tb=document.getElementById('ac-rows');tb.innerHTML='';\n  rows.forEach(function(r){tb.innerHTML+='\n\n<tr>\n<td>'+r[0]+'<\/td>\n<td>'+r[1]+'<\/td>\n<\/tr>\n<p>';});\n  var body='Marine A\/C sizing from drakemarine.com%0D%0A%0D%0ABoat: (name \/ model)%0D%0ACabin: '+L+' x '+W+' x '+H+' m, sun: '+sun+', occupancy: '+occ+'%0D%0ACalculated: ~'+Math.round(btu)+' BTU%0D%0ASuggested: '+(pick?pick.m+' ('+pick.btu+' BTU)':'multi-unit \/ chiller \u2014 please advise')+'%0D%0A%0D%0APlease quote unit + seawater kit + install parts.';\n  document.getElementById('ac-mail').href='mailto:hello@drakemarine.com?subject=Marine A\/C quote \u2014 from the BTU calculator&body='+body;\n  var r=document.getElementById('ac-result');r.style.display='block';r.scrollIntoView({behavior:'smooth',block:'start'});\n}\n<\/script><\/p>\n<div class=\"card\" style=\"margin-top:18px;\">\n<h2>Got your BTU number? We supply the units<\/h2>\n<p>Our <a href=\"\/product\/marine-dc-air-conditioning-unit\/\"><strong>marine DC air conditioning units<\/strong><\/a> run straight from a 12, 24 or 48&nbsp;V battery bank &mdash; 7,000&ndash;16,000 BTU, self-contained and seawater-cooled, with reverse-cycle heating. No generator needed for a cool night at anchor. Planning to run one from batteries? Check the amp draw against our <a href=\"\/battery-bank-calculator\/\">battery bank calculator<\/a>, or browse the full <a href=\"\/product-category\/air-conditioning\/\">air conditioning range<\/a>. Special order, supplied and supported from Thailand.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u0420\u0430\u0441\u0447\u0435\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0435\u043d \u0441 \u0443\u0447\u0435\u0442\u043e\u043c \u0442\u0430\u0439\u0441\u043a\u043e\u0433\u043e \u0430\u043f\u0440\u0435\u043b\u044f, \u0430 \u043d\u0435 \u0431\u0430\u043b\u0442\u0438\u0439\u0441\u043a\u043e\u0433\u043e \u0438\u044e\u043d\u044f \u2014 \u0440\u0430\u0437\u043c\u0435\u0440\u044b \u043a\u0430\u044e\u0442\u044b \u0443\u043a\u0430\u0437\u0430\u043d\u044b \u0441 \u0443\u0447\u0435\u0442\u043e\u043c \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0439 \u043c\u043e\u0449\u043d\u043e\u0441\u0442\u0438 \u043c\u043e\u0440\u0441\u043a\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043a\u043e\u043d\u0434\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u041f\u043e\u0434\u0431\u0435\u0440\u0438\u0442\u0435 \u043a\u043e\u043d\u0434\u0438\u0446\u0438\u043e\u043d\u0435\u0440 \u043f\u043e\u0434 \u0441\u0432\u043e\u044e \u043a\u0430\u044e\u0442\u0443. \u0421\u043e\u0437\u0434\u0430\u043d\u043e \u0434\u043b\u044f \u0442\u0440\u043e\u043f\u0438\u043a\u043e\u0432 \u2014 \u043c\u044b \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u0435\u043c \u0440\u0430\u0437\u043c\u0435\u0440\u044b \u0441 \u0443\u0447\u0435\u0442\u043e\u043c \u0442\u0430\u0439\u0441\u043a\u043e\u0433\u043e \u0430\u043f\u0440\u0435\u043b\u044f, \u0430 \u043d\u0435 \u0431\u0430\u043b\u0442\u0438\u0439\u0441\u043a\u043e\u0433\u043e \u0438\u044e\u043d\u044f. \u041e\u0434\u0438\u043d \u0440\u0430\u0441\u0447\u0435\u0442 \u043d\u0430 \u043a\u0430\u044e\u0442\u0443 \u0438\u043b\u0438 \u0437\u043e\u043d\u0443. \u0414\u043b\u0438\u043d\u0430 \u043a\u0430\u044e\u0442\u044b (\u043c) \u0428\u0438\u0440\u0438\u043d\u0430 \u043a\u0430\u044e\u0442\u044b (\u043c) \u0412\u044b\u0441\u043e\u0442\u0430 \u043f\u043e\u0442\u043e\u043b\u043a\u0430 (\u043c)\u2026<\/p>","protected":false},"author":9,"featured_media":17550,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-8421","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/pages\/8421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/comments?post=8421"}],"version-history":[{"count":2,"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/pages\/8421\/revisions"}],"predecessor-version":[{"id":17573,"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/pages\/8421\/revisions\/17573"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/media\/17550"}],"wp:attachment":[{"href":"https:\/\/drakemarine.com\/ru\/wp-json\/wp\/v2\/media?parent=8421"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}