MR COOL DIY Mini Split - 12,000 BTU 22 SEER | Ductless Mini-Split Heat -
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MR COOL DIY Mini Split - 12,000 BTU 22 SEER | Ductless Mini-Split Heat Pump A/C | 4th Generation Do-It-Yourself Heat Pump & Air Handler with SMARTPHONE CONTROLLER

SKU DIY-12-HP-WM-115C25
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The 4th generation MRCOOL DIY 12K BTU ductless heat pump system keeps you comfortable year-round. This powerful single-zone system is capable of heating and cooling an area up to 500 square feet. It comes complete with a 12K condenser, 12K air handler, and a 25-foot line set pre-charged with R-410A refrigerant. The line set also has quick connectors, which require no special tools, equipment, or training to install.

The MRCOOL® DIY system also includes many features that make it stand out among its competitors-it achieves an outstanding 22 SEER efficiency rating, allowing it to be ENERGY STAR ® certified. This system has many operating modes to select from to suit the needs of the user, including heat, cool, dry (dehumidification), and sleep. It also has a follow me function that adjusts the temperature of the room based on the temperature being read by the hand-held remote control.


  • ENERGY STAR® certified, 22 SEER, and 11.5 HSPF
  • Easy DIY installation—the pre-charged R-410A 25' quick connect line doesn't require special tools, equipment, or training
  • Designed to efficiently heat and cool a single 500 sq ft room
  • SmartHVAC app enables Wi-Ficontrol, is compatible with Amazon Alexa and Google Assistant, and is used anywhere with your apple or android smart device and a Wi-Fi connection
  • Variable-speed DC inverter compressor technology cuts operating costs
  • Low ambient cooling—cools down to 5°F
  • Corrosion-resistant gold fin condenser
  • 7 year compressor warranty and 5 year parts warranty
  • Includes follow me feature, dehumidifying operation, auto mode, louver position memory, and sleep mode

MRCOOL-DIY-12-HP-115C25 - Specs:

Capacity and Performance

  • Cooling Capacity: 12000
  • SEER: 22.0
  • Heating Capacity: 12000
  • HSPF4: 11.5
  • HSPF5: 9
  • Coverage Area (Heat/Cool): Up to 500
  • Indoor Noise Level (Hi/Mi/Lo): 37/31/23.5
  • Outdoor Noise Level: 53.5

Electrical Parts

  • Power Supply: 115V, 60Hz, 1Ph
  • Minimum Circuit Ampacity: 19.0
  • Maximum Fuse (Breaker): 25.0

Dimensions and Height

  • Net Dimension (WxDxH): Indoor 31.57 x 7.44 x 11.69 in
    Outdoor: 30.12 x 11.93 x 21.85 in
  • Net Gross Weight: Indoor 24.03/34.17 lbs
    Outdoor: 65.70/85.3 lbs

Refrigerant & Piping

  • Refrigerant R-410A: 38.01 oz
  • Piping Size Liquid side/Gas side: 1/4"-1/2 in

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