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Description
MRCOOL DIY 12K Hyper Heat Ceiling Cassette Mini Split System – 23.5 SEER2, -22°F Heating, Pre-Charged Line SetMRCOOL DIY Hyper Heat 12K Ceiling Cassette Mini Split Bundle The MRCOOL DIY Hyper Heat 12K Ceiling Cassette Mini Split Bundle is a 5th Generation DIY ductless heat pump system designed for cold climate heating and efficient cooling in spaces up to 550 sq. ft. This complete bundle includes the DIYHH 12 HP C 230D25 O 12,000 BTU Hyper Heat outdoor condenser, the DIYCASSETTE12HP 230D25 O OuttaSight one way ceiling cassette, and a factory pre charged DIY
MRCOOL DIY Hyper Heat 12K Ceiling Cassette Mini Split Bundle
The MRCOOL® DIY Hyper Heat 12K Ceiling Cassette Mini Split Bundle is a 5th Generation DIY ductless heat pump system designed for cold-climate heating and efficient cooling in spaces up to 550 sq. ft. This complete bundle includes the DIYHH-12-HP-C-230D25-O 12,000 BTU Hyper Heat outdoor condenser, the DIYCASSETTE12HP-230D25-O OuttaSight® one-way ceiling cassette, and a factory pre-charged DIY® QuickConnect® line set.
Built for real winter performance, this MRCOOL Hyper Heat system provides heating operation down to -22°F while delivering quiet, efficient cooling during warmer months. The ceiling cassette design keeps your walls open by installing between standard 16 in. ceiling joists, making it an excellent option for bedrooms, offices, additions, basements, garages, cabins, studios, and spaces where a wall-mounted air handler is not ideal.
The MRCOOL DIY system uses factory-sealed, pre-charged QuickConnect® technology with R-454B refrigerant. That means no vacuum pump, no gauges, no nitrogen, and no field refrigerant handling are required for the line set connection. Amazing, an HVAC system that does not immediately demand half a service van worth of tools.
What's Included
- DIYHH-12-HP-C-230D25-O – 12K Hyper Heat Outdoor Condenser
- DIYCASSETTE12HP-230D25-O – 12K OuttaSight® One-Way Ceiling Cassette
- Pre-Charged DIY® QuickConnect® Line Set with R-454B Refrigerant
- DIYPRO® Cable
- Wireless Remote Control
- SmartHVAC® WiFi Control Module
- Installation Hardware
- Mounting Template
- Installation Manuals
Key Features
- 12,000 BTU Hyper Heat heating and cooling performance
- Designed for spaces up to 550 sq. ft.
- Cold-climate heating operation down to -22°F
- Flush-mount ceiling cassette design keeps walls open
- Installs between standard 16 in. ceiling joists
- Pre-charged DIY® QuickConnect® line set included
- No vacuum pump, gauges, or refrigerant handling required
- High-efficiency DC inverter compressor
- Up to 23.5 SEER2 efficiency
- 10 HSPF2-4 heating efficiency
- Built-in condensate pump in the ceiling cassette
- Quiet indoor operation from 24–41 dBA
- SmartHVAC® App control for iOS and Android
- Compatible with Amazon Alexa® and Google Assistant®
- Gold Fin® anti-corrosion outdoor condenser coating
Ideal Applications
- Bedrooms and guest rooms
- Home offices and studios
- Basements and finished lower levels
- Bonus rooms and room additions
- Garage conversions
- Cabins and small homes
- Tiny homes and ADUs
- Airbnb and rental spaces
- Workshops and hobby rooms
- Rooms where a wall-mounted air handler is not preferred
Line Set Length Information
This system includes a standard 25 ft pre-charged QuickConnect® line set. Extended line set options may include an additional line set, couplers, and a longer control wire for installations requiring more distance between the indoor ceiling cassette and outdoor condenser.
QuickConnect® line sets should not be cut. Any extra line set length should be properly coiled and installed according to MRCOOL installation guidelines.
Performance Specifications
| Specification | Value |
|---|---|
| System Type | 12K DIY Hyper Heat Ceiling Cassette Mini Split |
| Cooling Capacity | 12,000 BTU |
| Heating Capacity | 12,000 BTU |
| Recommended Coverage Area | Up to 550 sq. ft. |
| SEER2 | 23.5 |
| EER2 | 12.8 |
| HSPF2-4 | 10 |
| HSPF2-5 | 8 |
| Heating Operating Range | Down to -22°F |
| Operating Temperature Range | -22°F to 122°F |
| Indoor Sound Level | 24–41 dBA |
Electrical & Refrigerant Specifications
| Specification | Value |
|---|---|
| Refrigerant Type | R-454B, Factory Pre-Charged |
| Outdoor Unit Model | DIYHH-12-HP-C-230D25-O |
| Outdoor Unit Voltage | 208/230V, 1 Phase |
| Outdoor Minimum Circuit Ampacity | 15A |
| Outdoor Maximum Fuse / Breaker | 15A |
| Liquid Line Size | 1/4 in. |
| Suction Line Size | 3/8 in. |
| Indoor Unit Model | DIYCASSETTE12HP-230D25-O |
| Indoor Unit Voltage | 208/230V |
| Indoor Minimum Circuit Ampacity | 3A |
| Indoor Maximum Fuse / Breaker | 15A |
| Condensate Drain | Integrated Condensate Pump |
Outdoor Condenser Dimensions & Weight
| Dimension | Value |
|---|---|
| Outdoor Unit Width | 31.69 in. |
| Outdoor Unit Height | 21.81 in. |
| Outdoor Unit Depth | 12.99 in. |
| Outdoor Unit Weight | 72.31 lbs |
Ceiling Cassette Dimensions & Mounting
| Ceiling Cassette Specification | Value |
|---|---|
| Indoor Unit Model | DIYCASSETTE12HP-230D25-O |
| Ceiling Cassette Width | 50.31 in. |
| Ceiling Cassette Height | 8.98 in. |
| Ceiling Cassette Depth | 13.19 in. |
| Ceiling Cassette Weight | 45 lbs |
| Mounting Type | Ceiling-Only Flush Mount |
| Joist Compatibility | Fits Between 16 in. Ceiling Joists |
| Airflow Style | One-Way Ceiling Cassette |
Control Options
| Control Feature | Included |
|---|---|
| Wireless Remote Control | Yes |
| SmartHVAC® App for iOS | Yes |
| SmartHVAC® App for Android | Yes |
| Amazon Alexa® Voice Control | Yes |
| Google Assistant® Voice Control | Yes |
| Programmable Timer | Yes |
| Auto Mode | Yes |
| Sleep Mode | Yes |
| Dehumidification / Dry Mode | Yes |
Warranty Coverage
| Warranty Item | Coverage |
|---|---|
| Compressor Warranty | 7-Year Compressor Warranty with Registration |
| Parts Warranty | 5-Year Parts Warranty with Registration |
| Extended Coverage | Limited Lifetime Compressor Replacement Available with MRCOOL® Care Enrollment |
Frequently Asked Questions
Does this MRCOOL 12K ceiling cassette bundle include the line set?
Yes. This bundle includes a factory pre-charged DIY® QuickConnect® line set with R-454B refrigerant.
Do I need a vacuum pump or gauges to install this system?
No. The QuickConnect® line set is factory-sealed and pre-charged, so no vacuum pump, gauges, nitrogen, or field refrigerant handling are required for the line set connection.
Can the ceiling cassette be mounted on a wall?
No. The MRCOOL OuttaSight® cassette is designed as a ceiling-only indoor unit and should be installed between compatible ceiling joists.
Does the ceiling cassette have a condensate pump?
Yes. The ceiling cassette includes an integrated condensate pump, which gives more installation flexibility than a gravity-drain-only setup.
Can I install this MRCOOL DIY Hyper Heat system myself?
Yes. This MRCOOL DIY system is engineered for homeowner installation using QuickConnect® pre-charged line set technology. A qualified electrician is recommended for the required electrical connection.
What size space will this 12K ceiling cassette mini split cover?
This 12,000 BTU system is designed for spaces up to approximately 550 sq. ft. Actual sizing depends on insulation, ceiling height, window exposure, layout, climate zone, and other building conditions.
Will this system heat in below-freezing weather?
Yes. The MRCOOL DIY Hyper Heat 12K system is designed for cold-climate heating operation down to -22°F.
Why Buy From MRCOOL DIY Direct?
MRCOOL DIY Direct specializes in MRCOOL DIY systems, ceiling cassette bundles, line sets, accessories, parts, and support. Our team can help verify sizing, line set length, electrical requirements, and installation compatibility before you order.
A ceiling cassette system is a premium option, but only if the space, joist layout, and electrical setup make sense. We help make sure you get the right equipment the first time instead of discovering a compatibility issue while staring at a hole in the ceiling. Humanity has suffered enough.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy