Mr. Cool DIYS-09-HP-115A11-O 9,000 BTU 17.5 SEER2 Select Black Wall Mounted Heat Pump System (115V) - R454B

MRCOOL® DIYS-09-HP-115A11-O DIY® Select 1st Gen 9,000 BTU 115V – R-454B Ductless Mini-Split Heat Pump System (Air Handler + Condenser)

The MRCOOL® DIYS-09-HP-115A11-O DIY® Select 1st Gen 9,000 BTU 115V ductless mini-split is designed to provide efficient, year-round heating and cooling for spaces up to approximately 400 sq. ft. As part of MRCOOL's renowned DIY® Select Series, this system is engineered for true do-it-yourself installation using a factory pre-charged Quick Connect® line set, eliminating the need for specialized HVAC tools or refrigerant handling. Built with environmentally friendly R-454B refrigerant , it delivers reliable performance while reducing Global Warming Potential (GWP) compared to previous refrigerants.

Designed for convenience and comfort, the system includes built-in Wi-Fi connectivity through the MRCOOL® SmartHVAC (Comfort) App , allowing remote temperature adjustments, scheduling, and energy monitoring from virtually anywhere. It also supports Amazon Alexa and Google Assistant for hands-free voice control. Quiet operation, multiple comfort modes, and inverter technology help maintain consistent indoor temperatures while keeping energy costs low. 

Rated up to 17.5 SEER2 and 8.8 HSPF2-4 , this DIY® Select system offers dependable energy efficiency for both heating and cooling. The outdoor condenser features a Gold Fin® corrosion-resistant coating for enhanced durability, while the included DIYPRO® communication cable simplifies electrical installation and provides additional protection against moisture and pests. MRCOOL® backs the system with a 2-year compressor warranty , 1-year parts warranty , and 1-year remote warranty for added peace of mind. 

General Information

System Type: Ductless mini-split heat pump (indoor air handler + outdoor condenser)
System Model: DIYS-09-HP-115A11-O
Indoor Model: DIY® Select 1st Gen 9,000 BTU 115V Air Handler
Outdoor Model: DIY® Select 1st Gen 9,000 BTU 115V Condenser with 11.5 ft Quick Connect® Line Set
Capacity: 9,000 BTU Cooling / Heating
Room Size: Up to ~400 sq. ft.
Operating Modes: Heating & Cooling
Refrigerant: R-454B (low GWP refrigerant)
Voltage: 115V, 1 Phase, 60Hz

Key Features

• True DIY Installation: Factory pre-charged Quick Connect® line set eliminates vacuuming and refrigerant charging

• Eco-Friendly Refrigerant: R-454B offers significantly lower Global Warming Potential than R-410A

• Energy Efficient: Up to 17.5 SEER2 and 8.8 HSPF2-4

• Smart Control: Built-in Wi-Fi with MRCOOL® SmartHVAC App compatibility

• Voice Control: Works with Amazon Alexa and Google Assistant

• Quiet Operation: Indoor sound levels as low as 18 dBA

• Comfort Modes: Auto, Sleep, Dry, Fan Only, and programmable scheduling

• Gold Fin® Protection: Corrosion-resistant outdoor coil for longer service life

• DIYPRO® Cable Included: Simplifies electrical installation while protecting wiring

• Warranty: 2-year compressor, 1-year parts, and 1-year remote warranty

Specifications (Rated Conditions)

Cooling Capacity: 9,000 BTU
Heating Capacity: 9,000 BTU
SEER2: Up to 17.5
EER2: 9.8
HSPF2-4: 8.8
Voltage: 115V
Coverage Area: Up to ~400 sq. ft.
Refrigerant: R-454B
Maximum Line Set Length: 75 ft.

Included Components

• DIY® Select 9,000 BTU 115V indoor air handler

• DIY® Select 9,000 BTU 115V outdoor condenser

• 11.5 ft factory pre-charged Quick Connect® line set

• 13 ft DIYPRO® communication cable

• Wireless remote control

• Installation accessories

Ideal For

Homeowners looking for an easy-to-install, energy-efficient ductless mini-split system for bedrooms, home offices, garages, studios, additions, or other spaces up to approximately 400 sq. ft. The DIY® Select Series is ideal for those who want professional-level comfort with simplified installation, smart controls, and dependable year-round heating and cooling.