The MRCOOL® Olympus MULTI3-18HP230C-O is a high-performance 18,000 BTU multi-zone heat pump condenser designed to power up to three indoor units simultaneously. Perfect for homeowners looking to efficiently manage temperatures in multiple spaces, this ductless system offers individualized climate control for each connected zone, making it a flexible solution for modern living environments. Built with advanced inverter technology, the unit delivers impressive efficiency, with SEER2 ratings up to 25.1 and HSPF2-4 up to 10. It performs reliably in diverse conditions, operating in outdoor temperatures as low as 5°F, ensuring comfort in both summer and winter months. This model is compatible with various
MRCOOL indoor units, including wall-mounted, ceiling cassette, and concealed duct options, giving users the freedom to tailor the system to their home’s layout and aesthetics. Smart features elevate user convenience, with control options that include the MRCOOL SmartHVAC app, traditional remotes, or even voice commands via Amazon Alexa and Google Assistant. Additional functions such as sleep mode, auto restart, and refrigerant leak detection contribute to enhanced safety and comfort. Backed by a 7-year warranty on the compressor and 5 years on parts (with professional installation), the MRCOOL®Olympus MULTI3-18HP230C-O is a reliable and energy-efficient choice for those seeking customized, zone-specific heating and cooling.
| Net Dimensions (In) | 13.46 D x 26.5 H x 35.04 W |
| Net Weight (Lbs) | 100.53 |
| SEER2 | Up to 25.1 |
| EER2 | Up to 14 |
| HSPF2-4 | 9.8 |
| HSPF2-5 | 7.8 |
| Tonnage | 1.5 |
| Cooling Capacity (Btu) | 18000 |
| Heating Capacity (Btu) | 19000 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 20 |
| Min Circuit Ampacity (A) | 16 |
| Color | White |
| Max Coverage Area | Up to 750 |
| Zone Capacity | 3 |
| Refrigerant Type | R-454B |
| Refrigerant Volume (Oz) | 61.73 |
| Decibel Rating (Dba) | 59.5 |
| Inverter | DC |
| Max Lineset Length (Ft) | 196.8 total |
| Lineset Fitting Type | Flare |
| Liquid Line Size | 3 x 1/4 |
| Suction Line Size | 3 x 3/8 |
| Compressor Motor Type | Twin-Rotary |
| Condenser Fan Motor Rpm | 750/600/500 |
| Metering Device | EXV + Capillary |
| 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) | 17.24 |
| Gross Height (In) | 29.53 |
| Gross Width (In) | 40.55 |
| Gross Weight (Lbs) | 109.35 |
The MRCOOL® OLYMPUS 9K DUCT Air Handler is a reliable solution for heating and cooling spaces up to 400 square feet, making it an excellent fit for bedrooms, home offices, or other compact areas. Its ceiling-integrated design allows for a discreet, flush installation that blends effortlessly into any interior, providing a sleek and contemporary appearance. This space-saving setup is ideal for both residential and light commercial environments where aesthetics and functionality are equally important.
For convenient operation, the unit includes both a wall-mounted wired controller and a handheld remote, allowing you to adjust your settings from across the room or right at your fingertips. Whether you're relaxing on the couch or managing temperature throughout the day, controlling your climate is simple and user-friendly. The air handler utilizes R-454B refrigerant, a next-generation, eco-conscious option that combines high performance with environmental responsibility. Its low global warming potential (GWP) significantly reduces the unit’s ecological impact while maintaining energy efficiency and reliable operation. For environmentally mindful homeowners, R-454B is a smart choice that supports sustainability without compromising performance. Backed by a limited lifetime warranty, 7-year compressor coverage, and a 5-year parts warranty, the MRCOOL® OLYMPUS 9K DUCT Air Handler is built to deliver dependable, long-term comfort. It’s a perfect solution for those who appreciate energy efficiency, quiet operation, and sleek design all in one dependable system.
| Net Dimensions (In) | 19.92 D x 7.87 H x 27.56 W |
| Net Weight (Lbs) | 39.46 |
| Tonnage | 0.75 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 15 |
| Min Circuit Ampacity (A) | 3 |
| Mount Type | Ducted |
| Color | Metal |
| Max Coverage Area | Up to 400 |
| Refrigerant Type | R-454B |
| Decibel Rating (Dba) | 32.5/32.5/31/29.5/23 |
| Decibel Rating Low (Dba) | 23 |
| Decibel Rating High (Dba) | 32.5 |
| Air Flow Direction | Ducted |
| Number Of Speeds | 5 (Variable) |
| Oscillation | No |
| Lineset Fitting Type | Flare |
| Liquid Line Size | 1/4 |
| Suction Line Size | 3/8 |
| Blower Motor Speeds | 323.7/264.9/206/147.2/117.7 |
| Blower Motor Rpm | 850/680/450 |
| 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) | 46.74 |
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.
