Experience year-round comfort with the MRCOOL® DIY® 18k BTU 208/230V Hyper Heat 21.2 SEER Ductless Heat Pump Single Zone Mini Split Condenser—a high-performance solution designed for easy installation without the need for professional tools or experience. Perfect for spaces ranging from 500-800 sq. ft., this system is compatible with both our stylish wall-mounted air handlers and the discreet DIY® OuttaSight® Ceiling Cassette. Installation is quick and hassle-free, thanks to the 25-foot DIY® Quick Connect® line set, which comes pre-charged with eco-friendly R-454B refrigerant. No vacuum pump or gauges required.
The included DIYPRO® cable adds extra durability, offering protection against outdoor elements, animals, and everyday wear. Control your comfort effortlessly with several convenient options: a handheld remote, the SmartHVAC mobile app for Apple and Android, or hands-free voice commands via Amazon Alexa and Google Assistant. The Gold Fin® condenser coating helps resist corrosion, making it a dependable option even in coastal climates.
Advanced features enhance both convenience and efficiency. Auto-Restart resumes unit function after a power outage, Timer allows for customized operation based on your schedule, and Sleep maximizes energy usage while you sleep.
For ultimate peace of mind, the MRCOOL® DIY® 18k BTU Hyper Heat Single Zone Mini Split includes a 7-year compressor and 5-year parts warranty following online registration. Give yourself additional protection with enrollment in the MRCOOL® Care Program, which includes a limited lifetime replacement program and an annual care kit for lasting performance and confidence.
| DIMENSIONS & WEIGHT | |
|---|---|
| Net Dimensions (In) | 13.46 D 26.5 H 35.04 W |
| Net Weight (Lbs) | 99.87 |
| Gross Depth (In) | 18.11 |
| Gross Height (In) | 29.53 |
| Gross Width (In) | 40.55 |
| Gross Weight (Lbs) | 120.15 |
| GENERAL INFORMATION | |
| Color | White |
| Max Coverage Area | 800 |
| Inverter | Yes |
| Metering Device | EEV |
| CAPACITY & PERFORMANCE | |
| SEER2 | 21.5 |
| EER2 | 12.5 |
| HSPF2-4 | 11 |
| HSPF2-5 | 8.5 |
| CFM | 1765.8 |
| Tonnage | 1.5 |
| Cooling Capacity (BTU) | 18000 |
| Heating Capacity (BTU) | 18000 |
| Cycle | 60 |
| Min Ambient Cool (F) | -22 |
| Min Ambient Heat (F) | -22 |
| COMPRESSOR & MOTORS | |
| Compressor Motor Type | Rotary |
| Condenser Fan Motor Rpm | 780/700/550 |
| NOISE LEVELS | |
| Decibel Rating (Dba) | 58 |
| ELECTRICAL REQUIREMENTS | |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Max Fuse Breaker (A) | 25 |
| Min Circuit Ampacity (A) | 19 |
| REFRIGERANT & PIPING | |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 52.21 |
| Lineset Included | Yes |
| Line Set Length | 25ft |
| Max Lineset Length (Ft) | 75 |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
| CONTROLS & CONNECTIVITY | |
| Works With | DIYCASSETTE18HP-230D25-O DIY-18-HP-WMAH-230D25-O |
| SAFETY | |
| UL Listed | Yes |
| CSA Certified | Yes |
| ETL Certified | Yes |
| Energy Star Certified | Yes |
| AHRI Certified | Yes |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Restricted States |
|
| WARRANTY | |
| Registered Warranty | 7-Years Compressor, 5-Years Parts |
| Base Warranty | 5-Years Parts |
| Base Parts Warranty | 5 Years |
| Base Compressor Warranty | 7 Years |
The 5th Generation MRCOOL® DIY® Series OuttaSight® 18K BTU 230V One-Way Ceiling Cassette provides efficient and powerful climate control for areas up to 800 sq. ft.
Designed for effortless installation, it eliminates the need for specialized tools, offering a cost-effective and straightforward setup. Ideal for both multi-zone and single-zone applications, this unit fits seamlessly between 16” ceiling joists, including pre-manufactured I-joists, ensuring a flush, modern appearance. Unlike conventional ceiling cassettes that require extensive ductwork or valuable wall space, this system provides flexible installation, making it perfect for both new construction and retrofit projects. It connects effortlessly to the MRCOOL® DIY® Quick Connect® line set, pre-charged with R-454B, an eco-friendly refrigerant, eliminating the need for vacuuming and simplifying the installation process.
Advanced filtration improves indoor air quality, while the Elevation function allows the filter panel to lower for easy maintenance and cleaning. With whisper-quiet operation and multiple control options—including a wireless remote, SmartHVAC app, and compatibility with Amazon Alexa and Google Assistant—this system ensures customized comfort. Supported by an industry-leading warranty, including a limited lifetime warranty, a 7-year compressor warranty, and a 5-year parts warranty, the MRCOOL® Outtasight® Ceiling Cassette offers reliable performance and year-round comfort.
| DIMENSIONS & WEIGHT | |
|---|---|
| Dimensions | 13.19" D x 8.98" H x 50.31" W |
| Net Weight (Lbs) | 45 |
| Gross Weight (Lbs) | 88 |
| GENERAL INFORMATION | |
| Mount Type | Ceiling |
| Color | White |
| Max Coverage Area | 800 |
| Air Flow Direction | 1-Way |
| Quiet Mode | Yes |
| CAPACITY & PERFORMANCE | |
| CFM | 400 / 352 / 300 / 207 / 207 |
| Cooling Capacity (BTU) | 18,800 |
| Heating Capacity (BTU) | 22,700 |
| Cycle | 60 |
| COMPRESSOR & MOTORS | |
| Blower Motor RPM | 1344/1184/1024 |
| NOISE LEVELS | |
| Decibel Rating (DBA) | 41.5 |
| Decibel Rating Low (DBA) | 26 |
| Decibel Rating High (DBA) | 44 |
| ELECTRICAL REQUIREMENTS | |
| Voltage (V) | 208-230 |
| Phase | 1 |
| Max Fuse Breaker (A) | 15 |
| Min Circuit Ampacity (A) | 3 |
| Rated Load | 1.2 |
| REFRIGERANT & PIPING | |
| Refrigerant Type | R-454B |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
| FILTER & HEATING | |
| Filter Type | Reusable |
| CONTROLS & CONNECTIVITY | |
| Fan Only Option | Yes |
| Sleep Mode | Yes |
| Auto Cool | Yes |
| WIFI Compatibility | Yes |
| APP Compatibility | Yes |
| Works with IOS | Yes |
| Works with Android | Yes |
| Remote Control Included | Yes |
| SAFETY | |
| Has Batteries | Yes |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Aerosol | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Restricted States |
|
| WARRANTY | |
| Registered Warranty | Limited Lifetime Compressor |
| Base Warranty | 5-Year Part/7-Year Compressor |
| Bas Parts Warranty | 5 Years |
| Registered Compressor Warranty | Limited Lifetime Compressor |
| Base Compressor Warranty | 7 Years |
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.
