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 |
Enjoy reliable heating and cooling with the MRCOOL® OLYMPUS ESTAR® 9k Series air handler, designed to deliver year-round comfort for spaces up to 400 square feet—ideal for single rooms, home offices, garages, and more. Its compact size allows for quick and easy installation, making setup a breeze for your installer. Equipped with the MRCOOL® Smart HVAC app, this unit offers convenient Wi-Fi connectivity, letting you control it from your smartphone or tablet, no matter where you are. Prefer a more traditional approach? Use the included remote control for simple access to your preferred settings. Built with efficiency in mind, the unit boasts impressive performance ratings: SEER2 of 25.8, EER2 of 14.9, and HSPF2-4 of 12.5—helping you cut down on energy costs. With multiple indoor fan speeds and whisper-quiet operation at just 47 dB, you’ll barely notice it’s there while enjoying consistent comfort. Now using eco-friendly R-454B refrigerant, this system is better for the environment without compromising on power or performance. You’ll also enjoy versatile control options, including voice command compatibility with Amazon Alexa and Google Assistant. Backed by an industry-leading warranty—including a limited lifetime warranty, 7-year compressor coverage, and a 5-year parts warranty—the MRCOOL® OLYMPUS ESTAR® 9k Series offers advanced technology, dependable performance, and personalized climate control for years to come.
| Net Dimensions (In) | 9.09 D x 11.81 H x 33.74 W |
| Net Weight (Lbs) | 23.37 |
| Tonnage | 0.75 |
| Voltage (V) | 208/230 |
| Phase | 1 |
| Cycle | 60 |
| Max Fuse Breaker (A) | 15 |
| Min Circuit Ampacity (A) | 3 |
| Mount Type | Wall |
| Color | White |
| Max Coverage Area | Up to 400 |
| Refrigerant Type | R-454B |
| Decibel Rating (Dba) | 38/38/33/20.5/19.5 |
| Decibel Rating Low (Dba) | 19.5 |
| Decibel Rating High (Dba) | 38 |
| Number Of Speeds | 5 (Variable) |
| Oscillation | Yes |
| Lineset Fitting Type | Flare |
| Liquid Line Size | 1/4 |
| Suction Line Size | 3/8 |
| Blower Motor Speeds | 441.4/323.7/229.6/176.6/147.2 |
| Blower Motor Rpm | 1100/850/700 |
| Filter Type | Reusable |
| Auxiliary Heater Included | No |
| Auxiliary Heater Available | No |
| 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 |
| 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 Depth (In) | 12.2 |
| Gross Height (In) | 14.57 |
| Gross Width (In) | 36.22 |
| Gross Weight (Lbs) | 29.98 |
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.
