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MRCOOL  |  SKU: MRCOOL-DIYHH12K-CAS-BUNDLE-230V-25FT
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MRCOOL DIY Hyper Heat 12K 23.5 SEER2 Ceiling Cassette Mini Split System Bundle 208/230V

$3,754.00 USD $4,254.00

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Description

MRCOOL DIY Hyper Heat 12K 23.5 SEER2 Ceiling Cassette Mini Split System Bundle 208/230V

The MRCOOL DIY Hyper Heat 12K Ceiling Cassette Mini Split System Bundle provides powerful year-round heating and cooling with professional-grade performance and true DIY convenience. Designed for spaces up to 550 sq. ft., this single-zone system pairs a 12,000 BTU Hyper Heat outdoor condenser with a sleek, flush-mount ceiling cassette indoor unit. The included factory-pre-charged QuickConnect® line set allows installation without vacuum pumps, gauges, or specialized HVAC tools, making it accessible for confident homeowners.

Equipped with Hyper Heat technology, this system maintains reliable heating performance in extreme cold, operating efficiently down to -22°F. Its ceiling cassette design installs neatly between standard ceiling joists, preserving wall space while delivering balanced air distribution throughout the room. An integrated condensate pump further simplifies installation by eliminating the need for gravity drainage.

Comfort and control are easily managed through the included wireless remote and built-in smart connectivity, allowing system control via mobile app and compatible voice assistants. Built for durability, the outdoor condenser features a corrosion-resistant Gold Fin® coating to withstand harsh environments. This complete bundle is an ideal solution for basements, home offices, bedrooms, or other spaces requiring discreet, efficient, and dependable climate control.

Features

  • 12,000 BTU Hyper Heat Performance with heating operation down to -22°F

  • Flush-Mount Ceiling Cassette design for a clean, unobtrusive installation

  • Pre-Charged QuickConnect® Line Set for true DIY installation

  • High Efficiency Ratings: 23.5 SEER2 and 10 HSPF2

  • Quiet Operation: Indoor sound levels as low as 24 dBA

  • Built-In Condensate Pump for flexible installation options

  • Smart Control Capability: Wireless remote, app control, and voice assistant compatibility

  • Gold Fin® Anti-Corrosion Coating on outdoor condenser

  • Complete DIY Bundle including condenser, ceiling cassette, line set, DIYPRO® cable, remote, Wi-Fi module, and installation hardware

Control your system however you like:

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

Specification

Unit Specification 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

Unit Width Height Depth Weight
Outdoor Unit — DIYHH-12-HP-C-230D25-O 31.69 in 21.81 in 12.99 in 72.31 lbs
Ceiling Cassette — DIYCASSETTE12HP-230D25-O 50.31 in 8.98 in 13.19 in 45 lbs

Performance & Operating Range

Specification Details
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

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

Sleep Mode

What’s Included

✔ 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.

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 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.

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.

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

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