Zone Air® Thin-Air 11,000 BTU 19 SEER2 230V Concealed Mini-Split Heat Pump AC - Up to 550 Sq Ft

Hidden 11,000 BTU Concealed-Ducted Comfort — Built-In Looks, DIY Price

The Zone Air 11,000 BTU concealed-ducted mini split brings contractor-quality heating and cooling to larger rooms while staying completely out of sight — and saves you the $3,000–$5,000 a pro install would cost. The slim air handler tucks above the ceiling, into a soffit, or inside a closet and feeds short duct runs to discreet supply vents, so the room reads as fully built-in with only a low-profile grille on display.

The line set ships pre-charged with R-454B refrigerant behind factory-sealed quick-connect fittings, making this true DIY on the refrigerant side — no vacuum pump, no gauges, no EPA Section 608 license. You take care of mounting the hidden handler and the short duct and vent connections while the refrigerant circuit stays sealed throughout. Rated for up to 550 sq ft (ideal for 350–550 sq ft), this 11,000 BTU system suits primary bedrooms, living rooms, bonus rooms, and open additions that need quiet, invisible climate control.

A concealed install is a step up from a wall unit, but it remains a homeowner job. If you can run a drill, hold a level, and follow clear instructions, you can position the slim handler and connect the short ducts. The pre-charged line set removes the most technical part of any mini-split install, so the refrigerant side is genuinely DIY.

Why You'll Love It

• Completely Invisible Comfort — The handler hides above the ceiling, in a soffit, or in a closet and feeds short ducts to discreet vents. No wall cassette and no ceiling box — just a clean, built-in room with only a low-profile grille showing.
• Up to 19 SEER2 Efficiency — SEER measures cooling efficiency, and a higher rating means lower bills. At up to 19 SEER2 this concealed system runs efficiently season after season, and mini-splits can trim energy bills by up to 30% versus older equipment.
• Cold Climate Performance — Reliable heating down to -13°F with Energy Star certification. Enhanced vapor injection technology maintains approximately 85% of rated heating capacity at 5°F, keeping larger rooms comfortable through deep winter.
• Smart WiFi Control — Manage temperature remotely through a smartphone app and voice assistants. Adjust your hidden system from anywhere — no unit or thermostat needs to live on the wall.
• 5-Year Warranty Protection — Zone Air backs this system with comprehensive coverage — 5-year parts and 7-year compressor warranty — plus a 45-day satisfaction guarantee for total security and peace of mind.

What Makes It Different

Most concealed-ducted systems are pro-only equipment that still requires refrigerant charging, vacuuming, and flaring — which defeats the purpose of DIY. Zone Air built this 11,000 BTU system so the invisible, built-in result a contractor bills thousands for is achievable at home, with the line set pre-charged and sealed at the factory.

• Pre-Charged Line Set Technology — The line set arrives factory-sealed with R-454B refrigerant. Hand-tighten the quick-connect fittings, torque to spec, and the refrigerant side is finished. No vacuum pump, no gauges, no HVAC license — pre-charged line sets eliminate the need for HVAC licensing entirely.
• Truly Hidden, Truly DIY — A concealed handler and short duct runs deliver the custom, ductless-free look of a built-in system while keeping the work homeowner-friendly: mount the handler, connect short ducts to the vents, and snap together the pre-charged refrigerant line with step-by-step instructions and video support.
• Cold Climate Optimization — Unlike standard mini splits that lose capacity below freezing, this is a purpose-built cold climate heat pump using enhanced vapor injection to hold heating output down to -13°F — not an air conditioner with a reversing valve bolted on.

How It Works

1. Mount and Duct — Secure the slim concealed handler above the ceiling, in a soffit, or in a closet and connect short duct runs to your discreet vents. Route the pre-charged line set to the outdoor condenser and join both ends with the quick-connect fittings. Testing the connections with soapy water is mandatory to check for leaks before activation, and proper torque and sealing are essential for leak prevention.
2. Power and Configure — Wire the system to a dedicated 208–230V circuit — a licensed electrician is recommended for the electrical disconnect box to ensure code compliance and safety. Once powered, set up WiFi through the smartphone app in minutes.
3. Invisible Comfort — The hidden handler distributes conditioned air evenly through the vents while the equipment stays out of sight. You get quiet, zoned comfort across the whole room and a fully built-in look with nothing on display.

Who It's For

Ideal for:

• Homeowners who want larger-room comfort they can feel but never see — no wall or ceiling unit on display
• Budget-conscious owners who want a high-end, built-in concealed system without paying thousands for professional installation
• Primary bedrooms, living rooms, bonus rooms, and additions up to 550 sq ft needing discreet, efficient climate control
• Cold climate residents who want reliable winter heat from a hidden, ductless-free-looking system

If you want invisible comfort, lower energy use, and the satisfaction of installing your own concealed system, this 11,000 BTU unit fits the bill. Energy-efficient mini-splits can qualify for rebates and tax credits — including up to $2,000 under the federal Section 25C tax credit for qualifying heat pumps — for savings across years of use.