MRCOOL DIY Mini-Split Series 5th Generation 36,000 BTU 3-Zone Wall Mounted 9K+9K+9K Heat Pump System

Enjoy personalized comfort in every room with the MRCOOL® DIY 3-Zone 36k BTU Multi-Zone Mini-Split System, engineered for energy-efficient performance and DIY-friendly installation. Perfect for smaller homes, apartments, or multi-room spaces.

This 5th Generation system includes:

• (1) 36k BTU Multi-Zone DIY® Condenser (DIY-MULTI5-36HP230D-O)

• (3) 9k BTU Wall-Mounted Air Handlers (3xDIY-09-HP-WMAH-230D25-O)

• (3) 25 ft DIY® Quick Connect® Line Sets (3xDIY25-1412-O)

Together, this system delivers powerful and efficient heating and cooling for up to 1,500 sq. ft., making it a reliable solution for zone-based comfort in bedrooms, offices, or small living areas.

✅ UL Listed, ETL Listed, and AHRI Certified

🛠️ True DIY Installation

Forget costly professional installation—this MRCOOL® DIY® system is built for homeowners. The Quick Connect® line sets come pre-charged with R-454B refrigerant, eliminating the need for vacuuming or handling refrigerant. Simply connect, tighten, and enjoy fast, mess-free setup with no special tools required.

🌿 Eco-Friendly & Efficient

The 36k BTU condenser reaches high-efficiency ratings with up to 20.5 SEER2 and HSPF2-4 of 9.4, helping reduce energy costs year-round. Featuring the new R-454B refrigerant, this system offers improved environmental performance over previous refrigerants.

📱 Smart Home Integration

Take full control of your indoor climate—anytime, anywhere:

• SmartHVAC app for iOS & Android

• Amazon Alexa & Google Assistant voice control

• Wireless remotes for each zone

• Follow Me® Mode targets the temperature around the remote for personalized comfort

💧 Built-In Humidity Control

Each 9k BTU air handler includes Dry Mode, designed to balance indoor humidity levels for greater comfort and healthier air quality—especially helpful during muggy seasons or in moisture-prone rooms.

🛡️ Built to Last

With a Gold Fin® anti-corrosion coating, the condenser is made to withstand harsh environments, including coastal and snowy regions. The DIYPRO® cable replaces traditional electrical conduit, providing durable, protected power connections that resist wear from outdoor elements.

🏆 Industry-Leading Warranty

• 7-Year Compressor Warranty

• 5-Year Parts Warranty

• Limited Lifetime Warranty with MRCOOL® Care Program registration

 

⭐ This Mini-Split System Replaces the Following Models: DIY-MULTI4-36HP230C,3xDIY-09-HP-WMAH-230C25,3xDIY25-1412