The MRCOOL DIY Select 18,000 BTU Single Zone Mini Split System delivers dependable year-round comfort for homeowners who want an efficient heating and cooling solution without the complexity of a traditional HVAC installation. Designed for larger single-zone applications, this system is ideal for bedrooms, garages, workshops, home offices, additions, and other spaces where reliable comfort and energy savings matter.
With coverage for areas up to 800 square feet, the DIY Select Series combines trusted MRCOOL performance with a simplified installation process. The included pre-charged Quick Connect® line set helps reduce installation time while making the system more accessible for homeowners looking for a DIY-friendly solution.
Powered by next-generation R-454B refrigerant and built with energy-efficient inverter technology, this system provides consistent heating and cooling performance while helping keep utility costs under control.
Why Homeowners Choose the MRCOOL DIY Select 18K
✅ Designed for spaces up to 800 sq. ft.
✅ Easy-to-install Quick Connect® system with included 11.5 ft. pre-charged line set
✅ Energy-efficient 17.3 SEER2 performance
✅ Reliable heating and cooling from a single system
✅ Built-in Wi-Fi connectivity for remote control and monitoring
✅ Compatible with the SmartHVAC app, Apple iOS, and Android devices
✅ Uses environmentally friendly R-454B refrigerant
Ideal Applications
The MRCOOL DIY Select 18K is an excellent choice for:
- Primary bedrooms
- Large home offices
- Garages and workshops
- Finished basements
- Sunrooms
- Room additions
- Small apartments
- Detached buildings and hobby spaces
Buy With Confidence from Skyway AC Sales
At Skyway AC Sales, we understand that choosing the right heating and cooling system is about more than just BTUs. It's about finding a reliable solution that delivers comfort, efficiency, and long-term value. As a Florida Licensed HVAC Contractor, David and the Skyway AC Sales team are here to help you make an informed decision before you buy.
Coverage estimates can vary based on insulation, ceiling height, window placement, climate zone, and room layout. Contact Skyway AC Sales for personalized sizing assistance to ensure the best system for your application.
Specifications
| Capacity & Performance |
| Zone Capacity |
1 |
| Cooling Capacity |
17,000 BTU |
| SEER2 |
17.3 |
| EER2 |
9.0 |
| Outdoor Operating Temperature (Cooling) |
-13 to 122℉ |
| Heating Capacity |
18,000 BTU |
| HSPF2-4 |
8.5 |
| HSPF2-5 |
6.5 |
| Outdoor Operating Temperature (Heating) |
-13 to 75℉ |
| Coverage Area |
Up to 800 sq ft. |
| Outdoor Noise Level |
55 dB(A) |
| Indoor Noise Level (Turbo/Hi/Med/Low/Sl) |
46.5 / 43 / 36.5 / 30 / 18.5 dB(A) |
| Dimensions & Weight |
| Condenser Dimensions |
30.12 W" x 11.93 D" x 21.85 H" |
| Air Handler Dimensions |
38.23 W" x 8.98 D" x 12.64 H" |
| Condenser Weight |
62.61 lbs |
| Air Handler Weight |
30.64 lbs |
| Electrical Requirements |
| Voltage |
208/230V |
| Phase |
1 |
| Cycle |
60Hz |
| Min Circuit Ampacity |
15A |
| Max Fuse Breaker |
20A |
| Refrigerant & Piping |
| Line Set Length |
11.5 ft. |
| Refrigerant Type |
R-454B |
| Refrigerant Volume |
34.92oz |
| Liquid Line Size |
1/4" |
| Suction Line Size |
1/2" |
| Max Line Set Length |
75 ft. |
| Features |
| Inverter Technology |
Yes |
| Wifi Compatibility |
Yes |
| App Compatibility |
Yes |
| Works with IOS |
Yes |
| Works with Android |
Yes |
| Remote Control Included |
Yes |
| Certifications & Warranty |
| Warranty |
2 Years Compressor
1 Years Parts |
Information & Guides
Installation Manual
Brochure
Service Manual
Remote Manual
Warranty Info
AHRI Cert
Energy Guide
