DIY-12-HP-WMAH-115C25 MrCool DIY 4th Gen E Star Heat Pump Wall Mount Air Handler, 22 SEER Rating, 12K BTU

Regular price $574.00 USD
Regular price Sale price $574.00 USD
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Shipping calculated at checkout.

Benefits & Features

✅ Efficient Heating and Cooling: Smartly designed for areas up to 500 sq ft.
✅ Easy Connection: Quick and hassle-free DIY installation.
✅ Smartphone App: Effortlessly control your HVAC system from anywhere.
✅ Environmentally Friendly: R-410A refrigerant for a sustainable choice.
✅ Quiet Operation: Noise level as low as 23.5 dBA ensures a peaceful environment.


Item Color: White
Item Dimension: 31.57" (W) x 7.44" (D) x 11.69" (H)
Item Weight: 24.03 lbs

Refrigerant Type: R-410A

Decibel Rating: 37/31/23.5 dBA
Noise Level (Low): 23.5 dBA
Noise Level (High): 37 dBA

SEER: 22
Cooling Capacity: 12,000 BTU
Heating Capacity: 12,000 BTU

Phase: 1
Cycle: 60
Voltage: 115
Fuse Breaker (Max): 15A
Circuit Ampacity(Min): 3A

Prop 65 Warning: YES

Transform your space with MrCool's 12K BTU/H DIY 4th Gen E Star Mini-Split Air Handler, expertly designed for HVAC professionals and homeowners alike. Crafted for efficiency and comfort, this wall-mounted air handler, made with expertise, seamlessly fits into any home, offering a noise level as low as 23.5 dBA. Take control with the Smartphone App and enjoy quick DIY installation with the pre-charged line set. Elevate your HVAC experience with this environmentally friendly refrigerant, R-410A, backed by a 5-year parts warranty and a 7-year compressor warranty.


  • DIY Pro™ Cable (added safety feature to protect wiring from outside elements)

Try our Complete MrCool E Star Ductless Mini-Splits:


Specs Sheet,
Install Manual,
Remote Manual,
Service Manual,
Brochure (Complete System),

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Frequently Asked Questions about the DIY-12-HP-WMAH-115C25 MrCool DIY 4th Gen E Star Heat Pump Wall Mount Air Handler, 22 SEER Rating, 12K BTU

What is a wall mount air handler?

A wall mount air handler is a device used in HVAC systems to distribute conditioned air into a living or working space. It is typically mounted on a wall and contains components for both heating and cooling.

How does a wall mount air handler work?

The unit pulls in air from the space, conditions it using a refrigeration cycle, and then distributes the conditioned air back into the room through the wall-mounted unit.

What are the advantages of wall mount air handlers?

Wall mount air handlers are space-saving, provide efficient heating and cooling, and offer flexibility in installation, making them suitable for various applications.

Can I install a wall mount air handler in any room?

Yes, wall mount air handlers are designed to fit in most interior spaces, providing versatility and adaptability to different room layouts.

How do I control a wall mount air handler?

Many wall mount air handlers, including the MRCOOL® DIY model, can be controlled through a SmartHVAC app on your Apple or Android smartphone.