MRCOOL DIY Mini-Split Series 5th Generation 48,000 BTU 4-Zone Wall Mounted 9K+9K+9K+24K Heat Pump System

Get complete, multi-room climate control with the MRCOOL® DIY 5th Generation 48,000 BTU 4-Zone Mini-Split System. Designed for total home coverage and true flexibility, this system includes three 9K BTU wall-mounted air handlers for smaller rooms and one high-capacity 24K BTU unit for large living areas—all powered by a single, ultra-efficient condenser. It’s the perfect solution for households that want zoned comfort without the cost or complexity of professional installation.

This 5th Generation system includes:

• (1) 48k BTU Multi-Zone DIY® Condenser (DIY-MULTI6-48HP230D-O)

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

• (1) 24k BTU Wall-Mounted Air Handler (1xDIY-24-HP-WMAH-230D25-O)

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

• (1) 50 ft DIY® Quick Connect® Line Set (1xDIY25-3858-O)

Together, this setup offers zoned heating and cooling for up to 2,000 sq. ft., making it ideal for medium to large homes with varied room sizes.

✅ UL Listed, ETL Listed, and AHRI Certified

🛠️ True DIY Installation

The MRCOOL® DIY® system is designed for homeowners with no HVAC experience required. Thanks to the pre-charged Quick Connect® line sets, you don’t need to vacuum the system or handle refrigerants. Just connect, tighten, and you're good to go!

🌿 Eco-Friendly & Energy Efficient

This system features the R-454B refrigerant, a cleaner, more environmentally friendly alternative to older refrigerants. The 48k BTU condenser delivers 21.8 SEER2 efficiency and HSPF2-4 of 10, helping you save on energy bills while keeping your home comfortable year-round.

📱 Smart Home Integration

Enjoy seamless control through:

• SmartHVAC app (iOS & Android)

• Amazon Alexa & Google Assistant compatibility

• Wireless remotes for each air handler

• Follow Me® mode that senses temperature where the remote is, not just on the wall

💧 Humidity Control for Every Zone

Each air handler comes equipped with Dry Mode, which helps reduce excess humidity and improve indoor comfort—especially useful during muggy summer months or in naturally damp areas.

🛡️ Built to Withstand the Elements

The Gold Fin® condenser coating resists corrosion, making it perfect for coastal or extreme climates. Meanwhile, the DIYPRO® cable adds durability and protection from weather and wildlife—no conduit required.

🏆 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,3xDIY-09-HP-WMAH-230C25,DIY-24-HP-WMAH-230C25,DIY25-3858,3xDIY25-1412