{"product_id":"mrcool-diy-5th-gen-4-zone-mini-split","title":"MRCOOL DIY 5th Gen 4-Zone Mini-Split System | Whole-Home Coverage, No Technician Required","description":"\u003cdiv class=\"hh-buyer-fit\" data-karr-block=\"last30days-2026-06-02\"\u003e\n  \u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Larger multi-room projects where ductwork is not practical and zone control matters.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWhy people buy it:\u003c\/strong\u003e Four ductless zones from one DIY-focused MRCOOL system.\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eWatch out for:\u003c\/strong\u003e This is the point where DIY can turn into design risk. Confirm room loads, head placement, line-set paths, electrical, and code requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe 4-zone system is where MRCOOL's DIY platform starts to replace a full central HVAC system for off-grid and rural homes. Four independently controlled zones means bedroom-level comfort tuning across a full homestead without running ductwork through walls or hiring a contractor for any part of the project. One outdoor condenser handles up to 27,000 BTU total capacity across four rooms, and every air handler connects via the same pre-charged quick-connect line set that defines the DIY line.\u003c\/p\u003e\n\n\u003ch2\u003eMRCOOL DIY 4-Zone System Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour independent zones\u003c\/strong\u003e — each room runs at its own setpoint; bedrooms, living areas, offices, and workshops all independently controlled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue DIY installation\u003c\/strong\u003e — pre-charged R-454B quick-connect line sets for all four zones; no HVAC contractor at any step\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 27,000 BTU total capacity\u003c\/strong\u003e — covers a full multi-room off-grid home from a single outdoor unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeats down to -13°F\u003c\/strong\u003e — cold-climate heat pump performance across all four zones simultaneously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle 230V outdoor condenser\u003c\/strong\u003e — one unit handles the whole home; cleaner than multiple split systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePer-zone WiFi and app control\u003c\/strong\u003e — MRCOOL Smart HVAC app; set schedules and temperatures per zone remotely\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGold Fin condenser coil\u003c\/strong\u003e — corrosion-resistant outdoor unit; rated for all climate conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentral HVAC alternative\u003c\/strong\u003e — no ductwork required; install in any room with exterior wall access\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eZone Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 zones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal System Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 27,000 BTU (condenser)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoverage Area\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,125 sq ft total (distributed across zones)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e208-230V, 60Hz, 1PH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRefrigerant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eR-454B (pre-charged line sets)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondenser Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIY-MULTI4-27HP230D-O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMin Operating Temp (Heating)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-13°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Air Handler Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9K, 12K, 18K BTU per zone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL, ETL, AHRI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 years parts \/ 7 years compressor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x 27,000 BTU outdoor multi-zone condenser (DIY-MULTI4-27HP230D-O)\u003c\/li\u003e\n\u003cli\u003e4x indoor wall-mount air handlers (BTU sizes per selected configuration)\u003c\/li\u003e\n\u003cli\u003e4x pre-charged quick-connect line sets (25 ft each)\u003c\/li\u003e\n\u003cli\u003eSmart HVAC Controller Modules (WiFi) for each zone\u003c\/li\u003e\n\u003cli\u003eRemote controls for each zone\u003c\/li\u003e\n\u003cli\u003eInstallation hardware\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MRCOOL","offers":[{"title":"Default Title","offer_id":48526270234879,"sku":"MRCOOL-DIY-4ZONE","price":4200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0815\/5450\/5983\/files\/hyper_heat_condenser_lit_r2ekeb_7eab243f-6642-4442-96b5-65b5e15bd2b0.png?v=1778795317","url":"https:\/\/homesteadheavy.com\/products\/mrcool-diy-5th-gen-4-zone-mini-split","provider":"Homestead Heavy","version":"1.0","type":"link"}