Zone Air® DIY 18,000 BTU Ductless Mini-Split Heat Pump — 23.5 SEER2, 230V Wall Mount

The Zone Air® 18,000 BTU 230V mini-split heat pump is our most powerful single-zone system, built to heat and cool large rooms and open-concept spaces from 500 to 900 square feet. With a 23.5 SEER2 rating and exceptional heating performance, it's the professional choice for demanding applications — great rooms, open kitchens and living areas, large additions, finished basements, and light commercial spaces. It runs on 208–230V power for maximum efficiency at this capacity.

Easy DIY Install — No Vacuum Pump, No HVAC Tech

Easy install is the whole point. The system ships with pre-charged linesets, so there's no vacuum pump, no refrigerant gauges, and no HVAC technician needed — just connect the quick-connect fittings, mount the units, and power on. Most homeowners complete a DIY installation in a few hours with basic tools, saving hundreds in professional install costs.

• Pre-charged linesets with quick-connect fittings — no refrigerant handling
• No vacuum pump required and no specialized HVAC tools
• 208–230V power
• Do-it-yourself in a few hours — save hundreds on professional installation

Year-Round Efficiency & Smart Control

Built around advanced variable-speed DC inverter technology, this system reaches up to 23.5 SEER2 efficiency and earns Energy Star certification, cutting energy use while holding steady, precise temperatures year-round. It's engineered for reliable heating and cooling in extreme climates, operating from -13°F to 131°F.

Smart Wi-Fi control lets you adjust temperature, mode, and schedules from your smartphone, and built-in cooling, heating, dry, and fan modes handle every season. Washable, reusable filters keep maintenance simple and ongoing costs low.

Specifications