The MRCOOL® Olympus MULTI4-27HP230C-O is a powerful 27,000 BTU multi-zone heat pump condenser capable of supporting up to four indoor units at once. Ideal for homeowners aiming to maintain precise temperature control in multiple areas, this ductless system allows for customized climate settings in each zone, offering a versatile and energy-smart solution for today’s homes. Engineered with advanced inverter technology, it boasts impressive energy efficiency—reaching SEER2 ratings up to 25 and HSPF2-4 up to 9.5. Designed to perform in a wide range of outdoor temperatures, this unit remains reliable even in cold weather down to 5°F, delivering year-round comfort. It’s also compatible with a variety of MRCOOL indoor unit types, including wall-mounted, ceiling cassette, and concealed duct options, making it easy to tailor the system to your home’s design and needs.
Convenience is built in, with smart control options like the MRCOOL SmartHVAC app, handheld remotes, or voice control via Amazon Alexa and Google Assistant. Additional features such as sleep mode, auto restart, and refrigerant leak detection provide added safety, ease of use, and peace of mind. Covered by a 7-year compressor warranty and a 5-year parts warranty (when professionally installed), the MRCOOL® Olympus MULTI4-27HP230C-O is a dependable, high-efficiency choice for those seeking flexible, zone-specific heating and cooling.
| Net Dimensions (In) | 16.14 D x 31.89 H x 37.24 W |
| Net Weight (Lbs) | 138.89 |
| SEER2 | Up to 25 |
| EER2 | Up to 13 |
| HSPF2-4 | 9.5 |
| HSPF2-5 | 7 |
| TONNAGE | 2.25 |
| Cooling Capacity (Btu) | 27000 |
| Heating Capacity (Btu) | 27000 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 25 |
| Min Circuit Ampacity (A) | 23 |
| Color | White |
| Max Coverage Area | Up to 1125 |
| Zone Capacity | 4 |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 84.66 |
| Decibel Rating (Dba) | 61 |
| Inverter | DC |
| Max Lineset Length (Ft) | 262.4 total |
| Lineset Fitting Type | Flare |
| Liquid Line Size | 4 x 1/4 |
| Suction Line Size | 3 x 3/8 + 1 x 1/2 |
| Compressor Motor Type | Rotary |
| Condenser Fan Motor Rpm | 800/700/650 |
| Metering Device | EXV |
| UL Listed | Yes |
| CSA Listed | Yes |
| ETL Listed2 | Yes |
| Energy Star Certified | Yes |
| AHRI Certified | Yes |
| Base Warranty | 5-Year Parts/7-Year Compressor |
| Base Parts Warranty | 5-Year |
| Base Compressor Warranty | 7-Year |
| Base Remote Warranty | 5 Year |
| Registered Labor Warranty | None |
| Base Labor Warranty | None |
| Has Batteries | Yes |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Restricted States | GU, PR, VI |
| Gross Depth (In) | 19.68 |
| Gross Height (In) | 34.84 |
| Gross Width (In) | 42.91 |
| Gross Weight (Lbs) | 149.69 |
The MRCOOL® OLYMPUS 18K CASSETTE provides efficient heating and cooling for areas up to 800 square feet, making it an ideal solution for bedrooms, home offices, or smaller spaces. Its ceiling-mounted design ensures a flush installation, seamlessly blending into your room and creating a sleek, contemporary appearance that enhances any interior style. This adaptable system is perfect for both residential and commercial applications, maximizing space while offering a practical and stylish climate control option. Operating at a quiet 48 dB, the indoor fan maintains a peaceful environment while delivering reliable performance. The low noise level ensures that heating or cooling is achieved without unnecessary distractions, making it perfect for quiet spaces like bedrooms, offices, or nurseries. Its unobtrusive operation fosters a relaxing atmosphere that supports both comfort and productivity.
The unit utilizes R-454B refrigerant, an eco-friendly choice that combines exceptional performance with environmental sustainability. With its low global warming potential, R-454B helps reduce the environmental footprint of your system while still providing optimal energy efficiency. This makes it an excellent choice for homeowners who want to minimize their impact on the environment while enjoying consistent, high-quality performance.
The MRCOOL® OLYMPUS 18K CASSETTE is backed by a limited lifetime warranty, 7-year compressor coverage, and a 5-year parts warranty, ensuring reliable operation and innovative technology. This unit is the perfect choice for those who value energy efficiency, modern design, and superior comfort.
| Net Dimensions (In) | 22.44 D x 9.65 H x 22.44 W |
| Net Weight (Lbs) | 35.27 |
| Tonnage | 1.5 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 15 |
| Min Circuit Ampacity (A) | 3 |
| Mount Type | Ceiling |
| Color | White |
| Max Coverage Area | Up to 800 |
| Refrigerant Type | R-454B |
| Decibel Rating (Dba) | 48/44.5/41/27.5/23.5 |
| Decibel Rating Low (Dba) | 23.5 |
| Decibel Rating High (Dba) | 48 |
| Air Flow Direction | Downflow |
| Number Of Speeds | 5 (Variable) |
| Oscillation | Yes |
| Lineset Fitting Type | Flare |
| Liquid Line Size | 1/4 |
| Suction Line Size | 1/2 |
| Blower Motor Speeds | 447.3/338.5/317.8/194.2/147.2 |
| Blower Motor Rpm | 800/750/700 |
| Filter Type | Reusable |
| Auxiliary Heater Included | No |
| Auxiliary Heater Available | No |
| Fan Only Option | Yes |
| Sleep Mode | Yes |
| Auto Cool | Yes |
| Wifi Compatibility | No |
| App Compatibility | No |
| Works With Ios | No |
| Works With Android | No |
| Remote Control Included | Yes |
| UL Listed | Yes |
| CSA Listed | Yes |
| ETL Listed | Yes |
| Base Warranty | 5-Year Parts |
| Base Parts Warranty | 5-Year |
| Base Remote Warranty | 5 Year |
| Registered Labor Warranty | None |
| Base Labor Warranty | None |
| Has Batteries | Yes |
| Contains Electronics | Yes |
| Contains Chemicals | Yes |
| Contains Compressed Gas | Yes |
| Proposition 65 Warning | Yes |
| Restricted States | GU, PR, VI |
| Gross Weight (Lbs) | 41.89 |
This remote is included with each air handler in MRCOOL's 5th Generation DIY or Advantage Mini Split Systems.
| Dimensions | 2" W x 6" L x 1" H |
| Works with | MRCOOL DIY 5th Generation Mini Splits |
| Restricted States | GU;PR;VI |
| Color | White |
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.
