MRCOOL DIY Mini-Split Series 5th Generation 48,000 BTU 3-Zone Wall Mounted 18K+18K+18K Heat Pump System

The MRCOOL DIY 5th Gen 48,000 BTU 3-Zone Mini-Split System efficiently heats and cools up to 2,000 sq. ft. It includes one 48k BTU condenser (DIY-MULTI6-48HP230D-O), three 18k BTU wall-mounted air handlers, and three 25-ft pre-charged Quick Connect line sets with eco-friendly R-454B refrigerant. Designed for tool-free DIY installation—no vacuuming or refrigerant handling required—it boasts a 21.8 SEER2 rating, app control, voice assistant compatibility, Follow Me, Dry Mode, and more. With a Gold Fin anti-corrosion condenser, durable DIYPRO cable, and strong warranties, it delivers powerful, long-lasting comfort for large rooms, basements, or open spaces.

Experience whole-home comfort with the MRCOOL DIY 3-Zone 48k BTU Multi-Zone Mini-Split System, designed for high-capacity climate control and effortless installation. This 5th Generation system is perfect for large rooms or open-concept living spaces, and includes:

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

• (3) 18k BTU Wall-Mounted Air Handlers (3xDIY-18-HP-WMAH-230D25-O)

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

Together, this configuration provides powerful, efficient heating and cooling for up to 2,000 sq. ft., making it an ideal solution for open layouts, basements, or large multi-room zones.

✅ UL Listed, ETL Listed, and AHRI Certified

🛠️ True DIY Installation

This MRCOOL DIY system is made for homeowners—no professional tools or HVAC experience required. The pre-charged Quick Connect line sets are filled with R-454B refrigerant, so there’s no vacuuming or handling refrigerant necessary. Just connect, tighten, and enjoy instant climate control—saving you time and installation costs.

🌿 Eco-Friendly & Efficient

The high-capacity 48k BTU condenser achieves an impressive 21.8 SEER2 efficiency and HSPF2-4 of 10, offering lower energy bills and reduced environmental impact. R-454B refrigerant is a next-generation, environmentally safer alternative, helping your home stay green and cool.

📱 Smart Home Integration

Take control of your comfort with a variety of smart features:

• SmartHVAC app for iOS & Android

• Voice compatibility with Amazon Alexa & Google Assistant

• Wireless remote for easy manual operation

• Follow Me function senses the remote’s location for targeted temperature adjustment

💧 Built-In Humidity Control

Each 18k BTU air handler features Dry Mode, helping to regulate moisture levels and improve indoor air quality—especially useful in humid climates or damp spaces.

🛡️ Built to Last

The outdoor unit is protected by a Gold Fin anti-corrosion coating, making it a durable option even in coastal or harsh-weather regions. The system also includes the rugged DIYPRO cable, offering added protection from outdoor elements and wildlife.

🏆 Industry-Leading Warranty

• 7-Year Compressor Warranty

• 5-Year Parts Warranty

• Limited Lifetime Warranty with MRCOOL Care Program registration