The MRCOOL® OLYMPUS ESTAR® 18k Series air handler provides reliable heating and cooling for spaces up to 750 square feet, making it ideal for bedrooms, offices, or garages. Compact and easy to install, it offers smart Wi-Fi control through the MRCOOL® Smart HVAC app, plus a handheld remote for quick adjustments. With high-efficiency ratings—SEER2 21.4, EER2 12.5, and HSPF2-4 11.0—you can enjoy year-round comfort while saving on energy costs. Operating quietly at just 49.5 dB and using eco-friendly R-454B refrigerant, this unit combines powerful performance with modern convenience. It’s also compatible with Amazon Alexa and Google Assistant and backed by an industry-leading warranty for long-lasting reliability.
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Compact Design: Perfect for smaller spaces up to 750 sq. ft., offering efficient comfort for bedrooms, offices, and garages.
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Smart Control: Wi-Fi compatible with the MRCOOL® Smart HVAC app for remote access from your smartphone or tablet.
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Voice Compatibility: Works seamlessly with Amazon Alexa and Google Assistant for hands-free operation.
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Energy Efficient: Delivers SEER2 21.4, EER2 12.5, and HSPF2-4 11.0 performance ratings for lower utility costs.
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Quiet Operation: Operates at a low 49.5 dB noise level, maintaining comfort without distraction.
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Eco-Friendly Refrigerant: Uses R-454B, a next-generation refrigerant with reduced environmental impact.
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Flexible Control Options: Includes a remote control for convenient manual operation.
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Reliable Warranty: Covered by a 5-year parts warranty.
Coverage varies by insulation, climate, ceiling height, windows, and layout.
SPECIFICATIONS & DIMENSIONS
| DIMENSIONS |
| Dimensions |
40.31" W x 9.69" D x 12.64" H |
| Mount Type |
Wall |
| Weight |
27.34 lbs
|
| REFRIGERANT & PIPING |
| Refrigerant Type |
R-454B |
| Liquid Line Size |
1/4" |
| Suction Line Size |
1/2 |
Professional Installation Required
As a traditional (non-DIY) Olympus system, this indoor unit must be installed by a licensed HVAC technician. The line set must be nitrogen pressure-tested and vacuumed before releasing refrigerant from the outdoor condenser. Proper commissioning ensures efficiency, reliability, and warranty validity.
| FEATURES |
| Fan Only Option |
Yes |
| Quiet Mode |
Yes |
| Auto Cool |
Yes |
| Wifi Compatibility |
Yes |
| App Compatibility |
Yes |
| Works with IOS |
Yes |
| Works with Android |
Yes |
| Remote Control Included |
Yes |
| CERTIFICATION & WARRANTY |
| Certifications |
UL Listed, ETL Listed, AHRI Certified |
| Warranty |
5 Year Parts |
| ELECTRICAL REQUIREMENTS |
| Voltage |
208-230V |
| Phase |
1 |
| Cycle |
60 Hz |
| Max Fuse Breaker |
15A |
| Min Circuit Ampacity |
3A |
| CAPACITY & PERFORMANCE |
| Tonnage |
1.5 Ton |
| Capacity |
18,000 BTU |
| Coverage Area |
501 to 750 sq ft
|
