The MRCOOL® DIY® 12K BTU 208/230V Hyper Heat 23.5 SEER Ductless Heat Pump Single Zone Mini Split Condenser delivers powerful, high-efficiency climate control with simple do-it-yourself installation—no special tools, training, or professional assistance required. It’s ideal for heating and cooling spaces between 350–550 sq. ft., and is compatible with both our sleek wall-mounted air handlers and the low-profile DIY® OuttaSight® Ceiling Cassette. Installation is fast and straightforward thanks to the 25-foot DIY® QuickConnect® line set, filled with environmentally-friendly R-454B refrigerant—eliminating the need for vacuuming or handling refrigerant. The included DIYPRO® cable enhances system protection, replacing traditional electrical conduit to guard against weather, pests, and yardwork damage. Enjoy flexible control with multiple options: the included remote, the SmartHVAC app for iOS and Android devices, or voice control through Amazon Alexa and Google Assistant. The corrosion-resistant Gold Fin® condenser coating is designed for durability, making it ideal for both inland and coastal environments. This system is loaded with smart features, including Auto-Restart to maintain continuity of comfort after power loss, a programmable Timer to correspond to your schedule, and the Sleep function, which increases efficiency while you sleep. For peace of mind, the unit includes a limited lifetime replacement and annual care kit with enrollment in the MRCOOL® Care Program, and comes standard with a 7-year compressor and 5-year parts warranty with online product registration. Enjoy dependable, hassle-free comfort year-round with The MRCOOL® DIY® 12K BTU Hyper Heat Single Zone Mini Split Condenser.
| Net Dimensions (In) | 12.99 D 21.81 H 31.69 W |
| Net Weight (Lbs) | 72.31 |
| SEER2 | 23.5 |
| EER2 | 12.8 |
| HSPF2-4 | 10 |
| HSPF2-5 | 8 |
| CFM | 1471.5 |
| Tonnage | 1 |
| Cooling Capacity (BTU) | 12000 |
| Heating Capacity (BTU) | 12000 |
| Voltage (V) | 208/230 |
| Works With | DIYCASSETTE12HP-230D25-O DIY-12-HP-WMAH-230D25-O |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 15 |
| Min Circuit Ampacity (A) | 15 |
| Color | White |
| Max Coverage Area | 550 |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 32.1 |
| Decibel Rating (Dba) | 56.5 |
| Inverter | Yes |
| Min Ambient Cool (F) | -22 |
| Min Ambient Heat (F) | -22 |
| Lineset Included | Yes |
| Line Set Length | 25ft |
| Max Lineset Length (Ft) | 75 |
| Liquid Line Size | 1/4 |
| Suction Line Size | 3/8 |
| Compressor Motor Type | Rotary |
| Condenser Fan Motor Rpm | 780/680/580 |
| Metering Device | EEV |
| UL Listed | Yes |
| CSA Certified | Yes |
| ETL Certified | Yes |
| Energy Star Certified | Yes |
| AHRI Certified | Yes |
| Registered Warranty | 7-Years Compressor, 5-Years Parts |
| Base Warranty | 5-Years Parts |
| Base Parts Warranty | 5 Years |
| Base Compressor Warranty | 7 Years |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Restricted States | GU;PR;VI |
| Gross Depth (In) | 14.57 |
| Gross Height (In) | 24.21 |
| Gross Width (In) | 36.02 |
| Gross Weight (Lbs) | 79.59 |
The 5th Generation MRCOOL® DIY® 12K BTU Ductless Mini-Split Heat Pump is an efficient and versatile climate control solution for spaces up to 550 sq. ft. Designed with homeowners in mind, this system offers a true DIY installation process, eliminating the need for specialized tools or professional assistance. This makes setup quick, straightforward, and cost-effective. One of its standout features is the pre-charged 25-foot DIY® QuickConnect® line set, pre-filled with R-454B refrigerant. T
his eliminates the need for vacuuming, significantly reducing installation time and expenses. The included DIYPRO® cable further streamlines installation by removing the need for electrical conduit while also offering enhanced durability and protection against the elements. Operating the system is simple and convenient, with multiple control options available. Adjust temperature settings with the wireless remote, the SmartHVAC app for iOS and Android devices, or hands-free voice commands via Amazon Alexa and Google Assistant. For personalized comfort, the Follow Me function ensures consistent temperature regulation by adjusting airflow based on the remote’s location, while Dry Mode helps control excess humidity.
Built for longevity, the Gold Fin® Condenser provides superior corrosion resistance, making it ideal for coastal environments. Supported by industry-leading warranties—including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty—this MRCOOL® DIY® system delivers reliable, year-round comfort with smart features and effortless installation.
| Dimensions | 7.44" D x 11.63" H x 31.57" W |
|
Voltage (V) |
208/230 |
|
Phase |
1 |
|
Cycle |
60 |
|
Mount Type |
Wall |
|
Color |
White |
|
Max Coverage Area |
550 sqft |
|
Oscillation |
Yes |
|
Filter Type |
Reusable |
|
Auxiliary Heater Included |
No |
|
Auxiliary Heater Available |
No |
|
Fan Only Option |
Yes |
|
Quiet Mode |
Yes |
|
Auto Cool |
Yes |
|
WIFI Compatibility |
Yes |
|
APP Compatibility |
Yes |
|
Works with IOS |
Yes |
|
Works with Android |
Yes |
|
Remote Control Included |
Yes |
|
UL Listed |
Yes |
|
ETL Listed |
Yes |
|
AHRI Certified |
Yes |
|
Registered Warranty |
Extended Limited Lifetime* |
|
Base Parts Warranty |
5 |
|
Base Compressor Warranty |
7 |
|
Has Batteries |
Yes |
|
Contains Electronics |
Yes |
|
Contains Chemicals |
Yes |
|
Contains Aerosol |
Yes |
|
Contains Compressed Gas |
Yes |
|
Proposition 65 Warning |
Yes |
What BTU rating should I choose for my air handler?
| Air Handler BTU | Coverage Area/Room Size (Sq. Ft.)* |
| 6K |
Up to 200 Sq. Ft.
|
| 9K |
Up to 375 Sq. Ft.
|
| 12K | Up to 500 Sq. Ft. |
| 18K | Up to 750 Sq. Ft. |
| 24k | Up to 1,000 Sq. Ft. |
| 36k | Up to 1,500 Sq. Ft. |
*Ceiling height, insulation, and local climate may impact the coverage area. For example, an uninsulated room will require more power than a well insulated room.
