Zone Air® DIY DUAL ZONE 24,000 BTU (12K+12K) 24 SEER2 230V Wall Mount Ductless Mini-Split Heat Pump System with 2x Pre-Charged Linesets - Up to 1,200 Sq Ft

Cool and Heat Two Rooms Independently — One Outdoor Unit, Two Wall Heads, Zero Contractor Bills

The Zone Air 24,000 BTU dual-zone mini split pairs two 12,000 BTU indoor wall heads with a single outdoor condenser, giving you contractor-quality comfort in two separate rooms while saving you $3,000–$5,000 in installation costs. This diy mini split is built for homeowners who want to condition two spaces — two bedrooms, a bedroom and a home office, or an open floor split into zones — without HVAC licensing, vacuum pumps, or any special tools beyond what's already in your garage.

Both indoor heads connect to the outdoor unit through factory pre-charged line sets filled with R-454B refrigerant, keeping the refrigerant circuit sealed from start to finish. You never handle refrigerant, and EPA Section 608 certification requirements don't apply. With 24,000 BTU total — split evenly at 12K and 12K — this system comfortably conditions up to 1,200 sq ft across two zones, roughly 600 sq ft per room, with each head setting its own temperature completely independently.

Installation for DIY dual-zone mini-splits is dramatically faster than traditional HVAC — most people finish in just a few hours per zone with basic hand tools and a drill. A second pair of hands makes routing the two line sets and mounting both heads easier, but no specialized training is required. If you're comfortable hanging a shelf and running a wire, you already have what you need.

Why You'll Love It

• Independent Temperature Control in Two Rooms — One outdoor condenser feeds two indoor wall heads, and each head runs on its own setting. Keep the bedroom cool at night while the office stays warmer by day — no compromise, no fighting over the thermostat, and no second outdoor unit cluttering your yard.
• Save Thousands on Installation — Two factory pre-charged line sets eliminate contractor fees, vacuum pump equipment, and specialized refrigerant tools across both zones. A dual-zone professional install can run $7,000 or more — doing it yourself keeps $3,000–$5,000 in your pocket.
• Up to 24 SEER2 Efficiency — SEER measures cooling efficiency, and a higher rating means lower energy bills. At up to 24 SEER2, this dual-zone system runs well beyond standard HVAC, and conditioning only the rooms you use can cut energy costs by up to 30%.
• Cold Climate Performance — Reliable heating down to -13°F with Energy Star certification on both zones. Enhanced vapor injection technology holds approximately 85% of rated heating capacity at 5°F, so both rooms stay comfortable through the harshest winters.
• 5-Year Warranty Protection — Zone Air backs the whole system — both heads and the condenser — with 5-year parts and 7-year compressor coverage, plus 30-day returns for total peace of mind.

What Makes It Different

Most diy dual-zone mini splits still require professional refrigerant charging, vacuum procedures, or flaring tools on every line set — honestly, that defeats the purpose of "DIY." Zone Air ships factory pre-charged R-454B line sets with quick-connect fittings on every zone, so no line set ever needs opening — no vacuum pump, no gauges, no refrigerant handling. Heats down to -13°F, with final assembly, testing, and inspection in the USA.

• Two Pre-Charged Line Sets — Both line sets arrive factory-sealed with R-454B refrigerant. Connect the quick-connect fittings by hand on each head, torque to spec, and both zones are ready. No vacuum pump, no gauges, no HVAC license — pre-charged line sets eliminate the need for HVAC licensing entirely, even on a dual-zone job.
• True DIY Dual Install — Quick-connect fittings, step-by-step instructions, and video support make this install homeowner-friendly. Plan a few hours per zone with basic tools — a drill, a wrench set, and a level. A helper speeds up mounting both heads and routing the two line sets.
• Cold Climate Optimization — Unlike standard multi-zone units that lose capacity below freezing, Zone Air uses enhanced vapor injection to sustain heating output to -13°F on both heads. This is a purpose-built cold climate heat pump, not an air conditioner with a reversing valve bolted on.

How It Works

1. Mount and Connect Both Heads — Install both indoor air handlers on your chosen walls and set the single outdoor unit on a stable surface or bracket. Route each pre-charged line set through a small wall penetration and connect both heads to the condenser using the quick-connect fittings. Test every connection with soapy water to check for leaks before activation — proper torque and sealing are essential on both line sets.
2. Power and Configure — Wire the outdoor unit to a dedicated 208–230V circuit. If no suitable circuit is nearby, a licensed electrician can run one and handle the disconnect box for code compliance. Once powered, configure WiFi for each zone through the smartphone app in minutes.
3. Independent Comfort in Both Rooms — Each head immediately begins heating or cooling its room to its own setting. Zoned control eliminates the waste of conditioning empty rooms, and with no ductwork there are no duct losses — DIY mini-splits skip expensive ducting entirely, saving you even more.

Who It's For

Ideal for:

• Homeowners who need to cool and heat two rooms — two bedrooms, or a bedroom and a home office — with independent temperature control in each
• Budget-conscious owners who want dual-zone comfort without paying $7,000+ for a professional multi-zone install
• Open-floor or addition owners who want to split one large space into two comfortable zones without ductwork
• Cold climate residents who need reliable heat in two rooms through freezing winters without tearing apart their house

If you want two independently controlled rooms, efficient energy use, and the ability to install your own dual-zone system over a weekend, this 24,000 BTU system fits your needs. Energy-efficient mini-splits may qualify for state and utility rebates (the federal 25C tax credit ended for systems placed in service after December 31, 2025) — and they operate efficiently without ductwork, saving costs across years of use.