MRCOOL 5th Gen DIY 9K BTU Single Zone Ductless Mini-Split System (115V) Applications
- Primary heating and cooling for master bedrooms or small studio apartments (Up to 400 sq. ft.)
- Climate control for insulated garages, workshops, and backyard sheds
- Supplemental temperature regulation for sunrooms and home additions
- Server rooms or home offices requiring isolated, consistent cooling
- Residential retrofits where installing traditional ductwork is impossible or cost-prohibitive
Ideal for homeowners looking to save thousands on professional HVAC installation costs without sacrificing premium features, energy efficiency, or reliability.
MRCOOL 5th Gen DIY 9K BTU Single Zone Ductless Mini-Split System (115V) Specifications
| SKU | DIY-09-HP-WM-115D25-O |
|---|---|
| Cooling / Heating Capacity | 9,000 BTU / 10,000 BTU (0.75 Ton) |
| Efficiency Ratings | 23.6 SEER2 / 14.0 EER2 / 11.5 HSPF2-4 |
| Power Supply | 115V / 60 Hz / 1-Phase |
| Max Coverage Area | Up to 400 sq. ft. |
| Refrigerant Type | R-454B (30.34 oz) |
| Noise Level (Indoor) | 18 dBA (Low) / 43 dBA (High) |
| Noise Level (Outdoor) | 54 dBA |
| Lineset Sizing | 1/4" Liquid / 3/8" Suction |
| Indoor Unit Dimensions (W×H×D) | 31.57" × 11.69" × 7.44" (24.91 lbs) |
| Outdoor Unit Dimensions (W×H×D) | 30.12" × 21.85" × 11.93" (65.48 lbs) |
| Certifications | Energy Star Certified, AHRI Certified, UL & ETL Listed |
| Warranty | 5-Year Base Parts / 7-Year Base Compressor |
MRCOOL 5th Gen DIY 9K BTU Single Zone Ductless Mini-Split System (115V) Features & Technology
- True DIY Installation: Pre-charged components and intuitive design allow for setup without specialized HVAC tools or training.
- DIYPro® Cable Included: Dramatically simplifies electrical setup by eliminating the need for traditional electrical conduit.
- Smart Home Integration: Built-in Wi-Fi and App compatibility fully support Google Assistant and Amazon Alexa right out of the box.
- Follow Me® Function: The remote control acts as a localized thermostat, tracking the air temperature directly around you for maximum personalized comfort.
- High-Efficiency DC Inverter: The advanced rotary compressor variable-speed technology minimizes energy consumption and temperature fluctuations.
- Multiple Operation Modes: Includes Auto Cool, Quiet Mode, Fan Only option, and 5 distinct fan speeds for ultimate environmental control.
MRCOOL 5th Gen DIY 9K BTU Single Zone Ductless Mini-Split Pre-Charged Lineset Packages
- 16ft Package: Air Handler (DIYCASSETTE09HP-115D25-O) + 16ft Lineset (DIY16-1438-O)
- 25ft Package: Air Handler (DIYCASSETTE09HP-115D25-O) + 25ft Lineset (DIY25-1438C-O)
- 35ft Package: Air Handler (DIYCASSETTE09HP-115D25-O) + 35ft Lineset (DIY35-1438C-O)
- 50ft Package: Air Handler (DIYCASSETTE09HP-115D25-O) + 50ft Lineset (DIY50-1438C-O)
NOTE: The system has a maximum lineset length capacity of 82 feet. Choose the package that best fits the physical distance between your indoor and outdoor units.
MRCOOL 5th Gen DIY 9K BTU Single Zone Ductless Mini-Split System Maintenance
- Remove and wash the reusable indoor air filter monthly to maintain peak airflow, efficiency, and indoor air quality.
- Keep the outdoor condenser unit clear of leaves, snow, and debris to ensure proper ventilation and heat exchange.
- Periodically inspect the lineset connections and DIYPro® cable for physical integrity.
- Utilize the MRCOOL App to run system diagnostics to catch any potential operational issues early.
Downloads & Documentation
Why Choose the MRCOOL 5th Gen DIY 9K BTU Single Zone Ductless Mini-Split System (115V)
- Massive savings by bypassing professional installation fees with a true do-it-yourself design.
- Ultra-high 23.6 SEER2 efficiency dramatically lowers monthly utility bills compared to traditional window units or older central air systems.
- Seamless control from anywhere using your smartphone, Alexa, or Google Assistant.
- Incredibly quiet 18 dBA indoor operation ensures your sleep or work is never disturbed.
The MRCOOL 5th Gen DIY 9K BTU Single Zone Ductless Mini-Split System (115V) delivers uncompromising comfort, top-tier efficiency, and intelligent technology in a package that empowers you to take control of your own installation.
