MRCOOL Design Your Own DIY 3 Zone Heat Pump System - R454B

Design Your Own MRCOOL® DIY® 3-Zone 5th Gen Multi Zone The MRCOOL DIY 5th Generation Multi-Zone is the industry’s first true whole-home ductless HVAC system that can be installed by a homeowner. With pre-charged Quick Connect® line sets, you can heat and cool multiple rooms without hiring an HVAC professional. Customize your 3-zone to match the way your home is actually used—bedrooms, living areas, sunrooms, basements, shops, and detached spaces. Every system uses factory-sealed line sets and advanced inverter technology to deliver quiet performance, lower energy bills, and reliable comfort in hot or cold climates. Whether you’re upgrading an entire home, finishing a basement, remodeling a rental, or expanding a shop or office, MRCOOL Multi-Zone DIY systems provide the most reliable, future-ready HVAC solution available for true do-it-yourself installation. Why It Stands Out Quick Connect® Line Sets Pre-charged and pre-flared from the factory. Just connect and go — no specialty refrigerant tools required. True Zone Control Set a different temperature in every room. Each indoor head unit operates independently from a single outdoor condenser. R454B Refrigerant Next-generation low-GWP refrigerant — cleaner for the environment and future-proof for upcoming regulations. Smart Home Ready Built-in Wi-Fi lets you control all three zones from your phone. Compatible with Alexa and Google Home. Year-Round Heat Pump Efficiently heats and cools in a single system. Operates in low outdoor temperatures — no separate furnace needed. Warranty-Backed DIY MRCOOL's DIY line is specifically designed for homeowner installation without voiding manufacturer warranty coverage. How Installation Works Choose your condenser and head units — Pick the right BTU condenser for your total square footage, then select a wall-mount head for each zone based on room size. Select your line set lengths — Measure the distance from your outdoor unit to each room. We'll include the right pre-charged line set for every zone. Mount the heads and run the lines — Hang each indoor unit, drill a pass-through hole, and feed the line set. No vacuuming or manifold gauges required. Connect the outdoor unit and power up — Snap the Quick Connect® fittings, wire the condenser to a dedicated circuit, and you're running — typically in a single weekend. Everything Included Your configured system ships complete — no surprise add-ons: Outdoor condenser unit 3 indoor wall-mount head units 3 pre-charged Quick Connect® line sets 3 wireless remotes Mounting hardware and brackets Built-in Wi-Fi module Full installation manual Free shipping + rebate eligibility information