The MRCOOL® Olympus 48,000 BTU multi-zone heat pump condenser is a heating and cooling powerhouse engineered to handle up to six indoor units at once. Ideal for larger homes or spaces with diverse climate needs, this ductless solution offers precise, room-by-room comfort without the complexity of traditional HVAC systems. At the heart of its performance is advanced inverter technology, which maximizes energy efficiency with SEER2 ratings as high as 24 and HSPF2-4 ratings up to 10.6. Whether it’s sweltering heat or freezing cold, this unit remains dependable—capable of operating in outdoor temperatures as low as 5°F.
Flexible compatibility with MRCOOL indoor unit styles—including sleek wall mounts, ceiling cassettes, and concealed duct models—ensures seamless integration with your home’s design. Ease of use is built into the experience. Control your climate with the intuitive MRCOOL SmartHVAC app, traditional remotes, or hands-free commands via Amazon Alexa and Google Assistant. Features such as sleep mode, auto restart, and refrigerant leak detection are designed to keep your system running smoothly, safely, and efficiently. With a 7-year compressor warranty and a 5-year parts warranty (when professionally installed), the Olympus MULTI6-48HP230C-O delivers high-capacity performance, intelligent control, and year-round reliability—perfect for those who need complete climate flexibility throughout a larger living space.
| Net Dimensions (In) | 16.34 D x 52.48 H x 37.48 W |
| Net Weight (Lbs) | 222 |
| SEER2 | Up to 24 |
| EER2 | Up to 12.5 |
| HSPF2-4 | 10.3 |
| HSPF2-5 | 8 |
| Tonnage | 4 |
| Cooling Capacity (Btu) | 47000 |
| Heating Capacity (Btu) | 48000 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 40 |
| Min Circuit Ampacity (A) | 34 |
| Color | White |
| Max Coverage Area | Up to 2000 |
| Zone Capacity | 6 |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 148.15 |
| Decibel Rating (Dba) | 63 |
| Inverter | DC |
| Max Lineset Length (Ft) | 262.4 total |
| Lineset Fitting Type | Flare |
| Liquid Line Size | 6 x 1/4 |
| Suction Line Size | 4 x 3/8 + 2 x 1/2 |
| Compressor Motor Type | Rotary |
| Condenser Fan Motor Rpm | 800/700/650 |
| Metering Device | EXV |
| UL Listed | Yes |
| CSA Listed | Yes |
| ETL Listed | 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) | 19.49 |
| Gross Height (In) | 58.27 |
| Gross Width (In) | 43.11 |
| Gross Weight (Lbs) | 254.19 |
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 |
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.
