MRCOOL Olympus 4th Gen 9,000 BTU R-454B Wall Mount Air Handler 208/230V O-09-HP-WMAH-230C-O
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Enjoy reliable heating and cooling with the MRCOOL® Olympus 4th Gen 9K Wall Mount 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.
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. The included remote control provides 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, 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. Voice command compatibility with Amazon Alexa and Google Assistant adds further convenience.
Backed by a 7-year compressor warranty and a 5-year parts warranty, the MRCOOL® Olympus 4th Gen 9K Wall Mount Air Handler offers advanced technology, dependable performance, and personalized climate control for years to come.
Technical Specifications
| Tonnage | 0.75 Ton |
| Voltage | 208/230 V |
| Phase | 1 |
| Frequency | 60 Hz |
| Max Fuse/Breaker | 15 A |
| Min Circuit Ampacity | 3 A |
| Refrigerant Type | R-454B |
| Max Coverage Area | Up to 400 sq ft |
| Liquid Line Size | 1/4" |
| Suction Line Size | 3/8" |
| Wi-Fi Compatible | Yes |
| App Compatible | Yes |
| Net Dimensions (D×H×W) | 9.09" × 11.81" × 33.74" |
| Net Weight | 23.37 lbs |
| Gross Dimensions (D×H×W) | 12.2" × 14.57" × 36.22" |
| Gross Weight | 29.98 lbs |
Certifications
- UL Listed
- CSA Listed
- ETL Listed
Warranty
- 5-Year Parts Warranty
- 7-Year Compressor Warranty
Product Documentation
- MRCOOL Olympus 4th Gen 9K Wall Mount Air Handler Installation Manual (PDF)
- MRCOOL Olympus 4th Gen 9K Wall Mount Air Handler Warranty Document (PDF)
- MRCOOL Olympus 4th Gen 9K Wall Mount Air Handler Brochure (PDF)
- MRCOOL Olympus 4th Gen 9K Wall Mount Air Handler Service Manual (PDF)
- MRCOOL Olympus 4th Gen 9K Wall Mount Air Handler Performance Specification Sheet (PDF)
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.