MRCOOL® DIY Hyper Heat 12K Ceiling Cassette Mini Split System Bundle — 5th Gen — Pre-Charged QuickConnect Line Set — 208/230V

Product Description 

MRCOOL-DIYHH12K-CAS-BUNDLE-230V-25FT

SHORT DESCRIPTION

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.

 

 ELECTRICAL DETAILS 

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

• Voltage: 208/230V Single Phase
• Max Fuse Breaker: 15A
• Min Circuit Ampacity: 15A
• Liquid Line: 1/4”
• Suction Line: 3/8”

 

12K Ceiling Cassette — DIYCASSETTE12HP-230D25-O

• Voltage: 208/230V
• Max Fuse Breaker: 15A
• Min Circuit Ampacity: 3A
• Condensate Pump: Integrated (built-in)
• Gravity drain not required

 

 UNIT DIMENSIONS

 

Outdoor Unit — DIYHH-12-HP-C-230D25-O

• Width: 31.69 in
• Height: 21.81 in
• Depth: 12.99 in
• Weight: 72.31 lbs

 

Ceiling Cassette — DIYCASSETTE12HP-230D25-O

• Width: 50.31 in
• Height: 8.98 in
• Depth: 13.19 in
• Weight: 45 lbs

 

 PERFORMANCE & OPERATING RANGE

• Cooling Capacity: 12,000 BTU
• Heating Capacity: 12,000 BTU
• SEER2: 23.5
• EER2: 12.8
• HSPF2-4: 10
• HSPF2-5: 8
• Max Coverage: 550 sq. ft.
• Extreme Temp Capability: -22°F heating / -22°F cooling
• Noise: 24–41 dBA

 

 CONTROL OPTIONS

• Wireless remote
• SmartHVAC app
• Google Assistant
• Amazon Alexa
• Programmable Timer
• Auto Mode
• Sleep Mode

FREQUENTLY ASKED QUESTIONS

 

Does this bundle include the line set?

✔ Yes — the QuickConnect® pre-charged line set is included.

Do I need a vacuum pump or gauges?

No.

The line set is factory sealed with R-454B refrigerant.

Can the ceiling cassette be put on a wall?

No.

It is a ceiling-only system designed to mount between 16” joists.

Does the cassette have a drain pump?

Yes — it has a built-in condensate pump.

Do wall mount air handlers have pumps?

No — wall mounts are gravity drain only (pump optional).

Can I install it myself?

Yes — it is designed for DIY install.

 

WHY BUY FROM MRCOOL DIRECT

• USA’s #1 most trusted MRCOOL dealer
• Factory-trained support
• No dropship resellers
• Warranty safety — Approved sales channel
• Nationwide delivery

 

Call 615-553-8118 for sizing assistance or bundle customization.