The MRCOOL® DIY Hyper Heat 12K Ceiling Cassette Bundle delivers true cold-climate comfort with professional HVAC performance and DIY installation.

This system includes the DIYHH-12-HP-C-230D25-O 12,000 BTU Hyper Heat condenser, the DIYCASSETTE12HP-230D25-O OuttaSight ceiling cassette, AND a pre-charged DIY® QuickConnect® line set—no vacuum pump, no gauges, no refrigerant handling.

Full DESCRIPTION

The MRCOOL® DIY Hyper Heat 12K Ceiling Cassette Mini Split Bundle is the most advanced ductless DIY heat pump ever released. It provides full heating capacity down to -22°F, delivering year-round comfort in climates where traditional mini splits or space heaters fail.

Unlike standard mini splits, the Hyper Heat platform maintains heat output in extreme winter conditions. The high-efficiency DC inverter compressor, paired with the new R-454B refrigerant, unlocks 23.5 SEER2 cooling, 10 HSPF2 heat, and whisper-quiet operation. This bundle is designed specifically for DIY homeowners: no EPA certification, no vacuum pumps, no refrigerant tools.

The included DIY® QuickConnect® pre-charged line set installs rapidly using threaded fittings. The refrigerant is sealed at the factory—just tighten connections, mount the system, and power it on.

The OuttaSight® 12K one-way ceiling cassette mounts fully flush between 16” ceiling joists, preserving your wall space and delivering a high-end commercial look. Unlike wall mounts, the cassette features a built-in condensate pump, which solves gravity drain limitations and allows installation where wall handlers cannot drain.

Control your system however you like:

• Wireless remote
• SmartHVAC App (iOS / Android)
• Amazon Alexa
• Google Assistant
• Smart program schedule & dew-humidity modes

Built to last, the outdoor condenser uses Gold Fin® anti-corrosion coating and is backed by MRCOOL’s industry-leading coverage: 7-year compressor warranty, 5-year parts warranty, plus limited lifetime replacement through MRCOOL® Care.

 WHY CHOOSE HYPER HEAT

Most mini splits lose heat output below 20–30°F.

Hyper Heat maintains full performance down to -22°F.

✔ Standard mini split → Good for moderate climates

✔ Hyper Heat → Engineered for cold climates and real winter use

If you live in:

• Kentucky
• Tennessee
• Midwest
• Mountain states
• Northeast
• Northern US / Canada

 Hyper Heat is the correct choice.

 Ideal Applications

This system is perfect when aesthetics matter, wall space is limited, or humidity needs controlled. The built-in pump allows ceiling installs where wall handlers or gravity drains fail.

Ideal for:

• Bedrooms or guest suites
• Home offices and retail spaces
• Finished basements & media rooms
• Airbnb / short-term rentals
• Salons, barbershops, and boutique commercial spaces
• Cabins & tiny homes
• Attic conversions
• Home gyms or spa rooms
• Areas up to 550 sq. ft.

Hyper Heat is the right solution when you want comfort, not survival.

 WHAT’S INCLUDED (BUNDLE)

✔ DIYHH-12-HP-C-230D25-O — 12K Hyper Heat Condenser

✔ DIYCASSETTE12HP-230D25-O — 12K OuttaSight Ceiling Cassette

✔ Pre-Charged DIY® QuickConnect® Line Set (included)

✔ DIYPRO® Cable (included)

✔ Wireless Remote

✔ SmartHVAC Control Module

✔ Installation hardware & manuals

Line set is factory pre-charged R-454B — no refrigerant tools required.