Mr. Cool DIY 9,000 BTU 5th Gen Multi-Zone Wall Mounted Indoor Unit- R454B

MRCOOL® DIY-09-HP-WMAH-230D25-O DIY® 9K BTU R-454B Ductless Mini-Split Heat Pump
The DIY-09-HP-WMAH-230D25-O 5th Generation MRCOOL® DIY® 9K BTU Ductless Mini-Split Heat Pump delivers quiet, efficient heating and cooling for spaces up to 400 sq ft with a 22.5 SEER rating. Designed for easy DIY installation, it requires no specialized tools and pairs with the pre-charged 25-foot DIY® Quick Connect® line set (sold separately) containing eco-friendly R-454B refrigerant—eliminating the need for vacuuming. The included DIYPRO® cable removes the need for electrical conduit while offering enhanced durability against the elements and wildlife. Operation is simple with multiple control options, including a wireless remote, the SmartHVAC app, and voice commands via Amazon Alexa and Google Assistant. Comfort is further enhanced by the Follow Me function, which adjusts airflow based on the remote’s location, and Dry Mode, which reduces indoor humidity. The Gold Fin® condenser provides superior corrosion resistance, ideal for coastal areas. Backed by a limited lifetime warranty, plus 7-year compressor and 5-year parts coverage, this system delivers reliable, year-round performance.

General Information
System Type: Ductless mini-split heat pump system
DIY-09-HP-WMAH-230D25-O- Model: MRCOOL® DIY® 9K BTU
Capacity: 9,000 BTU Cooling / Heating (year-round comfort)
Room Size: Up to 400 sq ft
Efficiency: 22.5 SEER
Operating Modes: Heating, Cooling, and Dry Mode (dehumidification)
Refrigerant: R-454B (pre-charged Quick Connect® line set compatible, sold separately)

Key Features
High Efficiency: 22.5 SEER for energy-smart performance
Easy DIY Installation: No special tools or professional help required
Eco-Friendly Refrigerant: R-454B for reduced environmental impact
DIYPRO® Cable: Durable and eliminates the need for conduit
Smart Controls: Remote, app, and voice control via Alexa & Google Assistant
Follow Me Function: Adjusts airflow based on remote’s location
Humidity Control: Dry Mode removes excess moisture
Corrosion Protection: Gold Fin® condenser for long-lasting durability
Warranty Protection: Limited lifetime warranty, 7-year compressor, 5-year parts

Included Components
DIY-09-HP-WMAH-230D25-O - MRCOOL® DIY® 9K BTU ductless mini-split heat pump
Wireless remote control

Ideal For
Small to medium-sized rooms needing efficient, versatile heating and cooling with easy DIY installation, smart control options, and corrosion resistance for long-term performance.