Mr. Cool Advantage 12,000 BTU 21.3 SEER2 Wall Mounted Heat Pump System (230V) – R454B

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MRCOOL® A-12-HP-WMAH-230D-O & A-12-HP-C-230D-O Advantage 5th Gen 12,000 BTU 230V – R-454B Ductless Mini-Split Heat Pump System (Air Handler + Condenser)
The MRCOOL® A-12-HP-WMAH-230D-O & A-12-HP-C-230D-O Advantage 12k BTU 230V ductless system delivers year-round comfort for rooms up to ~500 sq ft. Featuring eco-friendly R-454B refrigerant with ~80% lower GWP than R-410A, it offers efficient, sustainable heating and cooling in a quiet, compact design. With SEER2 ratings up to 21.3 and HSPF2-4 at 9.1, this system saves energy while lowering costs. Built-in Wi-Fi allows control from your smartphone, Amazon Alexa, or Google Assistant. The ductless design simplifies installation compared to central HVAC systems, requiring professional setup for reliable performance. Backed by MRCOOL®’s warranty (1 year parts, 2 years compressor, 1 year remote with registration) and eligible for the MRCOOL® Care Program with Limited Lifetime coverage, the Advantage ensures dependable operation and peace of mind.

General Information
System Type: Ductless mini-split heat pump (indoor air handler + outdoor condenser)
Indoor Model: 5th Gen 12k BTU 230V Advantage Air Handler A-12-HP-WMAH-230D-O
Outdoor Model: 5th Gen 12k BTU 230V Advantage Condenser A-12-HP-C-230D-O
Capacity: 12,000 BTU Cooling / Heating
Room Size: Up to ~500 sq ft
Operating Modes: Heating & Cooling
Refrigerant: R-454B (low GWP)
Voltage: 230V

Key Features

• Eco-Friendly Refrigerant: R-454B reduces environmental impact

• High Efficiency: Up to 21.3 SEER2, 9.1 HSPF2-4

• Quiet Comfort: Engineered for minimal noise in bedrooms/living areas

• Smart Control: Built-in Wi-Fi; control via app, Alexa, or Google Assistant

• Ductless Installation: Faster, simpler pro installation than central systems

• Room Coverage: Designed for single-zone spaces up to ~500 sq ft

• Warranty: 1-year parts, 2-year compressor, 1-year remote (with registration); Limited Lifetime available through MRCOOL® Care Program

Specifications (Rated Conditions)
Cooling Capacity: 12,000 BTU
Heating Capacity: 12,000 BTU
SEER2: Up to 21.3
HSPF2-4: 9.1
Voltage: 230V
Coverage Area: Up to ~500 sq ft
Refrigerant: R-454B

Included Components

• Indoor air handler (12k BTU, 230V), A-12-HP-WMAH-230D-O

• Outdoor condenser (12k BTU, 230V) A-12-HP-C-230D-O

• Wireless remote control
  (Professional installation and standard mounting hardware required)

Ideal For
Homeowners seeking a quiet, energy-efficient, and eco-conscious ductless system for medium-sized rooms (~500 sq ft) with smart Wi-Fi control, sustainable refrigerant, and long-term reliability.