Zone Air® DIY 3 ZONE 36,000 BTU (12K+12K+12K) 24 SEER2 230V Wall Mount Ductless Mini-Split Heat Pump System with 3x Pre-Charged Linesets - Up to 1,800 Sq Ft

Whole-Home Comfort in Three Rooms — One Outdoor Unit, Zero Contractors

This 3 zone mini split system heats and cools three separate rooms — up to 1,800 square feet total — from a single outdoor condenser. Each 12,000 BTU wall mount head runs independently with its own thermostat, remote, and WiFi app control, so the bedroom can sit at 68°F while the living room holds 72°F and the office stays off entirely. Three pre-charged R454B linesets ship in the box, which means no vacuum pump, no manifold gauges, and no EPA Section 608 license — the same DIY install as every Zone Air system, three times over.

The 27,000 BTU multi-zone outdoor unit is rated at 24 SEER2 with heating output down to -13°F, and it modulates across a 4,500-33,000 BTU/h heating range so it sips power when only one zone calls for comfort. One outdoor unit also means one set of penetrations, one electrical circuit, and one condenser on the pad instead of three.

Why You'll Love It

• Three Rooms, One System — Condition three bedrooms, a living room and two offices, or any three-room combination up to 600 sq ft per zone — all from one outdoor unit with independent control in every room.
• True DIY Installation — Three pre-charged linesets with hand-tight quick-connect fittings. No refrigerant handling, no vacuum pump, no HVAC license. Installing three zones yourself saves thousands versus a contracted multi-zone install.
• 24 SEER2 Efficiency — The inverter-driven 27K condenser is rated 24 SEER2 and 10.5 HSPF2, and it throttles down when fewer zones are running instead of cycling on and off.
• Cold Climate Heating — Rated heating operation down to -13°F, so all three zones stay warm through real winters.
• 5-Year Warranty Protection — Zone Air backs the whole system — all three heads and the condenser — with a 5-year parts and 7-year compressor warranty, plus 30-day returns on uninstalled systems.

What Makes It Different

Most multi-zone mini splits still require a technician to flare fittings, pull a vacuum on three line runs, and weigh in refrigerant. That multiplies install cost by the zone count.

• Three Pre-Charged Linesets — Every line run arrives factory-sealed with R454B already inside. Connect each head with hand tools, torque to spec, and check the joints with soapy water — the refrigerant circuit never opens.
• Honest Capacity Numbers — The three heads connect 36,000 BTU/h of indoor capacity to a 27,000 BTU/h rated condenser — a standard multi-zone connection ratio that works because three rooms almost never demand full capacity at the same moment. Both numbers are printed in the spec table below.
• One Circuit, Not Three — A single 230V circuit on a 30A double-pole breaker powers the whole system, instead of three separate circuits for three single-zone units.

How It Works

1. Mount Three Heads — Install each wall mount indoor unit in its room and run the three pre-charged linesets through small wall penetrations back to the outdoor unit location.
2. Connect and Check — Hand-thread the quick-connect couplings on each of the three circuits, torque to spec, and test every joint with soapy water before startup.
3. Power and Pair — Wire the outdoor unit to a dedicated 230V circuit (a licensed electrician is recommended for the disconnect box), then pair each head to the WiFi app for room-by-room control.

Who It's For

This 3 zone system is for:

• Homes with three rooms to condition — bedrooms, offices, living areas — that want one outdoor unit instead of three
• DIYers comfortable with a weekend project who want to skip a $3,000-plus multi-zone installation bill
• Additions, upstairs floors, and ranch layouts where three rooms share one side of the house
• Cold climate homeowners who need dependable heat in every zone down to -13°F

Only conditioning two rooms? A Zone Air dual-zone system is the cleaner fit.