MRCOOL® Olympus 18,000 BTU 1.5 Ton Ductless Mini Split Wall Mounted Air Handler 230V/60Hz, O-18-HP-WMAH-230C-O (NON-DIY)

DESCRIPTION

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.

Compact Design: Perfect for smaller spaces up to 750 sq. ft., offering efficient comfort for bedrooms, offices, and garages.

Smart Control: Wi-Fi compatible with the MRCOOL® Smart HVAC app for remote access from your smartphone or tablet.

Voice Compatibility: Works seamlessly with Amazon Alexa and Google Assistant for hands-free operation.

Energy Efficient: Delivers SEER2 21.4, EER2 12.5, and HSPF2-4 11.0 performance ratings for lower utility costs.

Quiet Operation: Operates at a low 49.5 dB noise level, maintaining comfort without distraction.

Eco-Friendly Refrigerant: Uses R-454B, a next-generation refrigerant with reduced environmental impact.

Flexible Control Options: Includes a remote control for convenient manual operation.

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 
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