MRCOOL DIY 12K BTU 5th Gen Ductless Mini Split Air Handler - 115V

The MRCOOL DIY 12K BTU 5th Gen Ductless Mini Split Air Handler is the indoor wall mount unit that heats and cools one room up to 550 square feet.

This wall mount unit offers easy do-it-yourself installation with no special tools or professional services needed. Your order ships with the wall mount air handler and a wireless remote control.

This is the indoor unit only. It works with the matching MRCOOL DIY 5th Gen 12K condenser and pre-charged line set, each sold separately.

Ideal for

• Bedrooms and guest rooms
• Home offices
• Small finished basements
• Bonus rooms

Best for: putting together a new MRCOOL DIY 12K single-zone system or replacing their current 5th Gen indoor unit

Features

• Barely a whisper indoors. Runs as low as 18 dBA, quieter than rustling leaves.
• Control from anywhere. Included remote, SmartHVAC app on your phone, or just ask Alexa or Google Assistant.
• Follow Me comfort. The remote senses the temperature where you're sitting, not at the wall, so the room feels the way you set it.
• Energy saving operation. It ramps up and down instead of cycling on and off, which is what keeps power bills down.
• Washable filter plus Dry, Quiet, Sleep, and Fan Only modes for year-round comfort with no recurring filter cost.

Key Specs

• 12,000 BTU (1 ton) heating and cooling
• Covers one room up to 550 sq ft
• 115V, 15A max breaker
• 18 to 43 dBA sound range
• 31.57" W x 11.69" H x 7.44" D, 24.91 lbs
• Connects to MRCOOL DIY® pre-charged Quick Connect line sets
• Wi-Fi, iOS and Android app, Alexa and Google Assistant
• ENERGY STAR, AHRI certified, UL and ETL listed
• Model: DIY-12-HP-WMAH-115D25-O

What you should know

This is the indoor unit only, not a complete system. To heat and cool your room you also need the matching MRCOOL DIY 5th Gen 12K condenser and a pre-charged line set. If you are replacing an existing 5th Gen 12K indoor unit, this is the right part.

Warranty

• 5-year parts coverage

Specifications:

Need help?

Call us at 1-800-514-2418 and our HVAC product specialists will help answer your questions and customize your MRCOOL DIY 12K BTU 5th Gen Wall Mount Air Handler setup.

Order online in minutes. Secure checkout, free shipping, and no sales tax.

Good AirX is an Authorized MRCOOL Dealer. Every unit ships new, factory-sealed, and fully covered by MRCOOL's manufacturer warranty.

Frequently Asked Questions

Here are some of the most asked questions about MRCOOL DIY 12K BTU 5th Gen Wall Mount Air Handler setup.

What room size is this 12,000 BTU air handler for?

This unit is designed to cool and heat a room or open space measuring up to 550 square feet. Ideal for bedrooms, home offices, small basements or bonus rooms.

Is this a complete system or only the indoor unit?

This is the indoor unit only. To have a complete system you also need the matching MRCOOL DIY 5th Gen 12K condenser and a pre-charged Quick Connect line set.

Which condenser does this air handler work with?

It works with the MRCOOL DIY 12K BTU 5th Gen Condenser - 115V. It does not work with 4th Gen or older condensers.

Can I really install this myself? What tools do I need?

Yes, you can install it yourself with basic tools like a drill and a level. The line sets are pre-charged, so there is no vacuum pump and no special HVAC tools. Most homeowners have the wall unit mounted and connected in an afternoon.

Does it heat as well as it cools?

Yes. You get 12,000 BTU of heat, the same as the cooling. It heats down to -13°F and cools up to 122°F.

What warranty do I get if I install it myself?

MRCOOL offers a 5-year parts warranty on the air handler, covering its electrical components, circuit boards, fan motor and coil. The 7-year compressor warranty comes with the condenser.

What is included in the box?

The air handler, a wireless remote control with batteries, the wall mounting plate and marking template, and the manuals.

What is your return policy?

We offer a 30 day returns for completely unused, uninstalled and in their original factory packaging in resalable condition units with restocking fees. Pre-charged line sets are non-returnable. Learn more about our Refund Policy.

Do you offer free shipping and where do you deliver to?

We offer free shipping and no sales tax on all of our MRCOOL products in the contiguous United States. We do not ship to Alaska, Hawaii, Canada, Puerto Rico or the Caribbean.