Zone Air® DIY 3 ZONE 30,000 BTU (9K+9K+12K) 24 SEER2 230V Wall Mount Ductless Mini-Split Heat Pump System with 3x Pre-Charged Linesets - Up to 1,500 Sq Ft

A 12K Zone Plus Two 9K Zones — a DIY 3 Zone System Sized Room by Room

This 3 zone mini split puts a 12,000 BTU head in your largest room and 9,000 BTU heads in two smaller ones — up to 1,500 square feet total (450 + 450 + 600) from a single outdoor condenser. It is the layout most homes actually have: one living room or primary bedroom that needs more capacity, and two bedrooms, offices, or nurseries that don't. Each head runs independently with its own thermostat, remote, and WiFi app control.

Three pre-charged R454B linesets ship in the box, so there's no vacuum pump, no manifold gauges, and no EPA Section 608 license — the same DIY install as every Zone Air system, three times over. Rated 24 SEER2 with heating output down to -13°F, and one outdoor unit means one set of penetrations, one electrical circuit, and one condenser on the pad instead of three.

Why You'll Love It

• Matched to Real Floor Plans — One 600 sq ft zone and two 450 sq ft zones — instead of forcing every room to the same head size and oversizing the small ones.
• 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 condenser is rated 24 SEER2 and 10.5 HSPF2, modulating smoothly across three zones 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.
• Mixed Head Sizes, One System — A 12K head and two 9K heads share one condenser, so each room gets capacity suited to it rather than a compromise size.
• 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 the 12K head in the largest room and the two 9K heads in the smaller rooms, then run the three pre-charged linesets through small wall penetrations 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 9K + 9K + 12K system is for:

• Homes with one mid-size main room around 600 sq ft plus two smaller rooms around 450 sq ft each
• A living room or primary bedroom paired with two bedrooms, offices, or a bonus room
• DIYers comfortable with a weekend project who want to skip a multi-zone installation bill
• Cold climate homeowners who need dependable heat in every zone down to -13°F

Two larger rooms instead of one? The 3 zone 33K (9K+12K+12K) moves a second zone up to 600 sq ft.