MRCOOL DIY® 5th Gen 36,000 BTU Multi-Zone Mini Split Air Handler – 230V

Model: DIY-36-HP-WMAH-230D25-O

Ideal Coverage: Up to 1,500 sq. ft. • Power: 230V • Refrigerant: R-454B

The MRCOOL® DIY® 36K BTU Multi-Zone Wall Mounted Air Handler is the largest available indoor unit in the 5th Generation lineup, engineered to deliver powerful performance for expansive areas such as open-concept living rooms, large garages, or commercial zones. Designed to integrate seamlessly with MRCOOL® multi-zone condensers, it provides year-round heating and cooling with cutting-edge smart controls and a true DIY installation experience.

🔥 Key Features

• DIY Installation: No vacuum pump or HVAC tools needed. Designed for fast and simple homeowner installation.
• Pre-Charged QuickConnect® Line Set: Uses R-454B refrigerant, factory-sealed and pressurized for easy connection.
• Environmentally Friendly Refrigerant: R-454B has a significantly lower Global Warming Potential than older R-410A systems.
• DIYPRO® Cable: Weatherproof and rodent-resistant armored power cable eliminates the need for separate electrical conduit.
• Wireless Smart Control: Control your comfort with the remote, SmartHVAC app, Amazon Alexa, or Google Assistant.
• Follow Me Mode: Enhanced comfort control by adjusting airflow based on the location of the remote.
• Dry Mode: Removes excess humidity from the room for improved indoor air quality.

📏 Room Size Coverage

Engineered to cool or heat large areas up to 1,500 square feet, this 36K BTU unit is ideal for basements, open-plan spaces, or workshops.

🛡️ Warranty You Can Count On

• Compressor: 7-Year Limited Warranty
• Parts: 5-Year Limited Warranty
• Lifetime Unit Replacement: Available with MRCOOL® Care Program enrollment

⚠️ Compatibility Notice

This 5th Gen air handler is pre-charged with R-454B refrigerant and is not compatible with older R-410A systems. Only pair with MRCOOL® 5th Generation multi-zone condensers.

Order from MRCOOL DIY Direct—America’s trusted leader in DIY HVAC solutions, replacement parts, and accessories.

Specifications & Dimensions

Specification	Details
Model Number	DIY-36-HP-WMAH-230D25-O
Cooling Capacity	36,000 BTU/h
Heating Capacity	36,000 BTU/h
Recommended Coverage Area	Up to 1,500 sq. ft.
Power Supply	208–230V, 60Hz, 1 Phase
Minimum Circuit Ampacity	8 A (est.)
Maximum Fuse	25 A (est.)
Refrigerant Type	R-454B
Line Set Size	3/8" Liquid x 5/8" Gas
Communication Cable Included	Yes, 4-conductor
Wireless Control	Remote, SmartHVAC App, Alexa, Google Assistant
Remote Sensor (Follow Me)	Yes
Dry Mode Function	Yes
Mounting Type	Wall-Mounted
Dimensions (WxDxH)	Approx. 50" x 10.5" x 14.5"
Net Weight	Approx. 45 – 50 lbs
ETL Listing Number	5031495