MRCOOL DIY Select 1st Gen 18K BTU 230V Complete System DIYS-18-HP-230A11-O
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The MRCOOL® DIY® Select 18K BTU 230V Single Zone Mini-Split Complete System includes both the condenser and wall mount air handler, designed to make HVAC installation simple and accessible for homeowners. Built for true do-it-yourself installation, it requires no specialized tools, certifications, or prior HVAC experience. Ideal for garages, home offices, studios, and similar spaces, it delivers reliable heating and cooling for areas up to 800 square feet.
The system delivers strong performance with a 17.3 SEER2 cooling rating and 8.5 HSPF2-4 heating efficiency, providing consistent, energy-efficient comfort year-round while helping control utility costs.
Installation is further simplified with an 11.5-foot Quick Connect® line set that arrives factory pre-charged with environmentally friendly R-454B refrigerant. The included 13-foot DIYPRO® cable eliminates the need for traditional electrical conduit, protecting wiring from moisture, pests, and everyday wear.
Comfort control is easy using the included wireless remote or the MRCOOL® Comfort app, with compatibility for Amazon Alexa and Google Assistant voice control.
Features like Sleep Mode, Dry Mode, Auto, and a Gold Fin® condenser coating enhance comfort and durability, even in humid or coastal environments.
For added peace of mind, the MRCOOL® DIY® Select system is backed by a 2-year compressor warranty and a 1-year parts warranty.
Technical Specifications
| Cooling Capacity | 17,000 BTU |
| Heating Capacity | 18,000 BTU |
| Tonnage | 1.5 Ton |
| SEER2 | 17.3 |
| EER2 | 9 |
| HSPF2-4 | 8.5 |
| HSPF2-5 | 6.5 |
| Voltage | 208/230V |
| Phase | 1 |
| Hz | 60 |
| Refrigerant Type | R-454B |
| Zone Capacity | 1 |
| Coverage Area | Up to 800 sq ft |
| Lineset Included | Yes (11.5 ft) |
| Max Lineset Length | 75 ft |
| Wi-Fi Compatible | Yes |
| App Compatible | Yes (iOS & Android) |
Certifications
- UL Listed
- CSA Listed
- ETL Listed
- AHRI Certified
Warranty
- 1 Year Parts Warranty
- 2 Year Compressor Warranty
Product Documentation
- MRCOOL DIY Select 18K BTU AHRI Certification (PDF)
- MRCOOL DIY Select 18K BTU Energy Guide (PDF)
- MRCOOL DIY Select Installation Manual (PDF)
- MRCOOL DIY Select Service Manual (PDF)
- MRCOOL DIY Select Warranty Document (PDF)
- MRCOOL DIY Select Brochure (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.