MRCOOL DIY Select 1st Gen R454B 18K BTU 230V White Wall Mount Air Handler DIYS-18-HP-WMAH-230A13-O
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The MRCOOL® DIY® Select 18K BTU 230V Ductless Mini-Split Heat Pump Air Handler delivers efficient, reliable heating and cooling for spaces up to 800 square feet. Ideal for garages, attics, basements, and bonus rooms, it provides consistent year-round comfort with simple operation and high efficiency.
Designed within the MRCOOL® DIY® lineup, this system supports true do-it-yourself installation. The compatible Quick Connect® line set comes factory pre-charged with environmentally friendly R-454B, eliminating the need for vacuum pumps or refrigerant handling. Additionally, the included 13-foot DIYPRO® cable replaces traditional electrical conduit, streamlining installation while safeguarding wiring from moisture, pests, and everyday wear.
Control your comfort easily with the included wireless remote or the MRCOOL® Comfort app, which allows you to adjust temperatures, set schedules, and monitor energy usage from anywhere. Compatibility with Amazon Alexa and Google Assistant enables convenient hands-free voice control.
Advanced features like Dry Mode, Sleep Mode, Auto Mode, and programmable scheduling enhance comfort while optimizing efficiency. A Gold Fin® condenser coating adds corrosion resistance, making the system well-suited for humid or coastal environments.
The MRCOOL® DIY® Select 18K includes a 2-year compressor warranty and 1-year parts warranty.
Technical Specifications
| Coverage Area | 800 sq. ft. |
| Tonnage | 1.5 Ton |
| Voltage | 208/230V, 1-Phase, 60Hz |
| Max Fuse / Breaker | 15A |
| Min Circuit Ampacity | 3A |
| Refrigerant Type | R-454B |
| Liquid Line Size | 1/4 in |
| Suction Line Size | 1/2 in |
| Wi-Fi Compatible | Yes |
| App Compatible | Yes |
| Net Dimensions (D×H×W) | 8.98 × 12.64 × 38.23 in |
| Net Weight | 30.64 lbs |
| Gross Weight | 44.97 lbs |
Warranty
- 1 Year Parts Warranty
Product Documentation
- MRCOOL DIY Select 18K BTU 230V Air Handler Installation Manual (PDF)
- MRCOOL DIY Select 18K BTU 230V Air Handler Warranty Document (PDF)
- MRCOOL DIY Select Product Brochure (PDF)
- MRCOOL DIY Select 18K AHRI Certification (PDF)
- MRCOOL DIY Select 18K Energy Guide (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.