The MRCOOL® DIY 5-Zone 48k BTU 5th Generation Multi-Zone Mini-Split System offers a powerful, energy-efficient, and fully customizable heating and cooling solution for up to 2,000 sq. ft. Designed for true DIY installation, this system includes five 9k BTU wall-mounted air handlers, a 48k BTU condenser, and a combination of 25- and 35-foot pre-charged Quick Connect® line sets filled with eco-friendly R-454B refrigerant. With no need for vacuuming or professional tools, setup is fast, simple, and cost-effective. Enjoy advanced features like SmartHVAC app control, voice assistant compatibility with Alexa and Google Assistant, Follow Me® technology, and built-in humidity control. Backed by industry-leading warranties and built with durable, corrosion-resistant Gold Fin® components, this MRCOOL® DIY system delivers year-round comfort with unmatched convenience.

This 5th Generation system includes:

(1) 48k BTU Multi-Zone DIY® Condenser (DIY-MULTI6-48HP230D-O)
(5) 9k BTU Wall-Mounted Air Handlers (5xDIY-09-HP-WMAH-230D25-O)
(2) 25 ft DIY® Quick Connect® Line Sets (2xDIY25-1412C-O)
(3) 35 ft DIY® Quick Connect® Line Sets (3xDIY35-1412C-O)

Together, this setup efficiently heats and cools up to 2,000 sq. ft., making it a perfect solution for small homes, multi-room spaces, or additions.

✅ UL Listed, ETL Listed, and AHRI Certified

🛠️ True DIY Installation

The MRCOOL® DIY® system is engineered for homeowners. Thanks to the pre-charged Quick Connect® line sets filled with eco-friendly R-454B refrigerant, there's no need for vacuuming or handling refrigerants, saving you on costly professional installation. Simply connect, tighten, and go!

🌿 Eco-Friendly & Efficient

The 48k BTU condenser boasts an impressive 21.8 SEER2 efficiency rating and HSPF2-4 of 10, reducing energy costs while delivering powerful, reliable performance. This system is Energy Star certified and designed to reduce your carbon footprint with the latest refrigerant technology.

📱 Smart Home Integration

Control your comfort from anywhere:

SmartHVAC app for iOS & Android
Amazon Alexa & Google Assistant compatibility
Wireless remote for manual control
Follow Me® mode ensures consistent comfort by sensing the remote’s location

💧 Built-In Humidity Control

Each 9k BTU air handler features Dry Mode, helping maintain optimal indoor humidity levels for greater comfort and air quality.

🛡️ Built to Last

The outdoor condenser features a Gold Fin® anti-corrosion coating, ideal for harsh climates, including coastal environments. Plus, the durable DIYPRO® cable eliminates the need for conduit while offering added protection against weather and wildlife.

🏆 Industry-Leading Warranty

7-Year Compressor Warranty
5-Year Parts Warranty
Limited Lifetime Warranty available with MRCOOL® Care Program registration

⭐ This Mini-Split System Replaces the Following Models: DIY-MULTI5-48HP230C, 5xDIY-09-HP-WMAH-230C25, 2xDIY25-1412, and 3xDIY35-1412

Best 5 Zone Ductless Mini Split DIY Systems

MRCOOL DIY Mini-Split Series 4th Generation 48,000 BTU 5-Zone Wall Mounted 9K+9K+9K+9K+9K Heat Pump System

MRCOOL DIY Mini-Split Series 4th Generation 48,000 BTU 5-Zone Wall Mounted 9K+9K+9K+9K+12K Heat Pump System

MRCOOL DIY Mini-Split Series 5th Generation 48,000 BTU 5-Zone Wall Mounted 9K+9K+9K+9K+9K Heat Pump System