{"product_id":"mrcool-diy-5th-gen-mini-split-4-zone-36-000-btu-mini-split-condenser-230v-with-18k-9k-9k-9k-wall-mount-air-handler-diy5-4z-36hp-18k9k9k9k","title":"MRCOOL DIY 5th Gen Mini Split - 4-Zone 36,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 9K + 9K + 9K Wall Mount Air Handlers - DIY5-4Z-36HP-18K9K9K9K","description":"\u003ch2\u003eMRCOOL DIY 5th Gen Mini Split - 4-Zone 36,000 BTU Ductless Air Conditioner and Heat Pump Condenser with 18K + 9K + 9K + 9K Wall Mount Air Handlers - DIY5-4Z-36HP-18K9K9K9K\u003c\/h2\u003e\n\u003cp\u003eTake control of your home’s comfort with the MRCOOL 5th Gen DIY Multi-Zone Mini Split System — the ultimate solution for efficient, customizable, and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003etrue DIY-friendly\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eheating and cooling.\u003c\/p\u003e\n\u003cp\u003eThis powerful\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e36K BTU 4-Zone\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esystem includes\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eone\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e18K\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eand\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003ethree 9K\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003ewall mounted air handlers.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomize mini-split system:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echoose the perfect line set length for each zone just above the “Add to Cart” button.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Efficient Cooling \u0026amp; Heating:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eEnjoy up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e23\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e9.9 HSPF2-4\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003efor energy-efficient year-round comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY-Friendly QuickConnect Installation:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eNo vacuuming or professional tools needed — pre-charged line sets make setup fast and simple.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Voice \u0026amp; App Control:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eFull control via SmartHVAC app, Alexa, Google Assistant, or included wireless remote.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEco-Conscious Refrigerant:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUses R-454B refrigerant with a low environmental impact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry-Leading Warranty:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eIncludes 5-year parts, 7-year compressor, and lifetime replacement with MRCOOL Care registration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003carticle data-turn=\"assistant\" data-scroll-anchor=\"true\" data-testid=\"conversation-turn-56\" data-turn-id=\"request-68f73039-b0d8-8324-b756-763eee567581-6\" dir=\"auto\" class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] thread-sm:[--thread-content-margin:--spacing(6)] thread-lg:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] thread-lg:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-model-slug=\"gpt-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" data-message-id=\"e575ef9f-dcfe-457f-ab37-46e695224c71\" data-message-author-role=\"assistant\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\"\u003e\n\u003cul data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"755\" data-start=\"30\"\u003e\n\u003cli data-end=\"203\" data-start=\"30\"\u003e\n\u003cp data-end=\"203\" data-start=\"32\"\u003e\u003cstrong data-end=\"73\" data-start=\"32\"\u003eVersatile Multi-Room Climate Control:\u003c\/strong\u003e The 36,000 BTU 5th Gen condenser with 18K + 9K + 9K + 9K wall units delivers powerful heating and cooling for up to four zones.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"352\" data-start=\"204\"\u003e\n\u003cp data-end=\"352\" data-start=\"206\"\u003e\u003cstrong data-end=\"231\" data-start=\"206\"\u003ePerfect Zone Balance:\u003c\/strong\u003e Ideal for homes needing one larger room (18K) and three smaller spaces (9K each) with independent temperature control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"479\" data-start=\"353\"\u003e\n\u003cp data-end=\"479\" data-start=\"355\"\u003e\u003cstrong data-end=\"382\" data-start=\"355\"\u003eDIY Installation Ready:\u003c\/strong\u003e Pre-charged quick-connect lines make setup simple—no vacuum pump or professional tools needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"625\" data-start=\"480\"\u003e\n\u003cp data-end=\"625\" data-start=\"482\"\u003e\u003cstrong data-end=\"504\" data-start=\"482\"\u003eEfficient \u0026amp; Quiet:\u003c\/strong\u003e Inverter compressor and R-454B refrigerant ensure strong performance, lower energy bills, and whisper-quiet operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-is-last-node=\"\" data-end=\"755\" data-start=\"626\"\u003e\n\u003cp data-is-last-node=\"\" data-end=\"755\" data-start=\"628\"\u003e\u003cstrong data-end=\"654\" data-start=\"628\"\u003eSmart Home Compatible:\u003c\/strong\u003e Control through the MRCOOL app, Amazon Alexa, or Google Assistant for effortless comfort management.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-end=\"359\" data-start=\"144\"\u003e\u003cstrong data-end=\"192\" data-start=\"144\"\u003eQ: What type of system is this MRCOOL model?\u003c\/strong\u003e\u003cbr data-end=\"195\" data-start=\"192\"\u003eA: It’s a 4-zone, 36,000 BTU ductless mini split air conditioner and heat pump from MRCOOL’s 5th Generation DIY Series, designed for efficient year-round comfort.\u003c\/p\u003e\n\u003cp data-end=\"530\" data-start=\"361\"\u003e\u003cstrong data-end=\"408\" data-start=\"361\"\u003eQ: What are the included air handler sizes?\u003c\/strong\u003e\u003cbr data-end=\"411\" data-start=\"408\"\u003eA: The system includes one 18,000 BTU and three 9,000 BTU wall-mounted air handlers, ideal for medium to large rooms.\u003c\/p\u003e\n\u003cp data-end=\"700\" data-start=\"532\"\u003e\u003cstrong data-end=\"569\" data-start=\"532\"\u003eQ: Is the system DIY-installable?\u003c\/strong\u003e\u003cbr data-end=\"572\" data-start=\"569\"\u003eA: Yes. MRCOOL’s pre-charged Quick Connect lines let homeowners install it easily without professional HVAC tools or services.\u003c\/p\u003e\n\u003cp data-end=\"909\" data-start=\"702\"\u003e\u003cstrong data-end=\"750\" data-start=\"702\"\u003eQ: Can each zone be controlled individually?\u003c\/strong\u003e\u003cbr data-end=\"753\" data-start=\"750\"\u003eA: Yes. Each air handler has independent temperature control and supports smart Wi-Fi operation via the MRCOOL SmartHVAC app, Alexa, and Google Assistant.\u003c\/p\u003e\n\u003cp data-end=\"1090\" data-start=\"911\"\u003e\u003cstrong data-end=\"959\" data-start=\"911\"\u003eQ: Does it provide both cooling and heating?\u003c\/strong\u003e\u003cbr data-end=\"962\" data-start=\"959\"\u003eA: Absolutely. The heat pump technology delivers powerful cooling in summer and reliable heating in winter for all four zones.\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-end=\"236\" data-start=\"102\"\u003e\n\u003cp data-end=\"236\" data-start=\"105\"\u003e\u003cstrong data-end=\"134\" data-start=\"105\"\u003eClean air filters monthly\u003c\/strong\u003e — Wash each indoor unit’s filter with lukewarm water, dry fully, and reinstall for optimal airflow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"321\" data-start=\"237\"\u003e\n\u003cp data-end=\"321\" data-start=\"240\"\u003e\u003cstrong data-end=\"271\" data-start=\"240\"\u003eWipe indoor units regularly\u003c\/strong\u003e to remove dust buildup from vents and surfaces.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"418\" data-start=\"322\"\u003e\n\u003cp data-end=\"418\" data-start=\"325\"\u003e\u003cstrong data-end=\"360\" data-start=\"325\"\u003eInspect outdoor condenser coils\u003c\/strong\u003e every 3–6 months; gently clear dirt, leaves, or debris.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"505\" data-start=\"419\"\u003e\n\u003cp data-end=\"505\" data-start=\"422\"\u003e\u003cstrong data-end=\"458\" data-start=\"422\"\u003eKeep at least 24 inches of space\u003c\/strong\u003e around the condenser for proper ventilation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"616\" data-start=\"506\"\u003e\n\u003cp data-end=\"616\" data-start=\"509\"\u003e\u003cstrong data-end=\"541\" data-start=\"509\"\u003eFlush condensate drain lines\u003c\/strong\u003e with a mild vinegar solution every few months to prevent clogs or odors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"719\" data-start=\"617\"\u003e\n\u003cp data-end=\"719\" data-start=\"620\"\u003e\u003cstrong data-end=\"649\" data-start=\"620\"\u003eCheck line set insulation\u003c\/strong\u003e annually to ensure it’s secure and undamaged for efficient cooling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"816\" data-start=\"720\"\u003e\n\u003cp data-end=\"816\" data-start=\"723\"\u003e\u003cstrong data-end=\"763\" data-start=\"723\"\u003eUse “Fan Only” or self-cleaning mode\u003c\/strong\u003e after cooling to reduce moisture and prevent mold.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"917\" data-start=\"817\"\u003e\n\u003cp data-end=\"917\" data-start=\"820\"\u003e\u003cstrong data-end=\"872\" data-start=\"820\"\u003eMonitor performance via the MRCOOL SmartHVAC app\u003c\/strong\u003e for alerts and system efficiency tracking.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1011\" data-start=\"918\"\u003e\n\u003cp data-end=\"1011\" data-start=\"921\"\u003e\u003cstrong data-end=\"943\" data-start=\"921\"\u003eBalance zone usage\u003c\/strong\u003e to avoid overloading the 18K air handler and ensure even comfort.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1117\" data-start=\"1012\"\u003e\n\u003cp data-end=\"1117\" data-start=\"1016\"\u003e\u003cstrong data-end=\"1047\" data-start=\"1016\"\u003eSchedule annual maintenance\u003c\/strong\u003e to verify refrigerant levels, connections, and condenser condition.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MRCOOL","offers":[{"title":"Default Title","offer_id":45477247123647,"sku":"DIY5-4Z-36HP-18K9K9K9K","price":3802.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/MRCOOL_5th_Gen_DIY_-_4-Zone_-_18K-27K-36K_-_Home_Outlet_Direct_150490c5-166b-4c2b-94d2-83ae56cc884e.webp?v=1775713165","url":"https:\/\/www.mybackyardzone.com\/products\/mrcool-diy-5th-gen-mini-split-4-zone-36-000-btu-mini-split-condenser-230v-with-18k-9k-9k-9k-wall-mount-air-handler-diy5-4z-36hp-18k9k9k9k","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}