SKU: 12730937331

MRCOOL DIY® 5th Gen E Star 12,000 BTU Single Zone Mini Split Air Handler 115V, DIY-12-HP-WMAH-115D25-O

Sale price$353.70 Regular price$393.00
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

MRCOOL DIY® 5th Gen E Star 12,000 BTU Single Zone Mini Split Air Handler 115V, DIY-12-HP-WMAH-115D25-OMRCOOL DIY 5th Gen 12,000 BTU Single Zone Mini Split Air Handler 115V (DIY 12 HP WMAH 115D25 O) The MRCOOL DIY 5th Gen 12K BTU Single Zone Mini Split Air Handler is designed for year round heating and cooling, providing energy efficient climate control for spaces 350 to 500 sq. ft.. This air handler pairs with the MRCOOL DIY 5th Gen Condenser, delivering seamless operation, customizable comfort, and wireless control. With a simple DIY installation,

MRCOOL DIY® 5th Gen 12,000 BTU Single Zone Mini Split Air Handler – 115V (DIY-12-HP-WMAH-115D25-O)

The MRCOOL DIY® 5th Gen 12K BTU Single Zone Mini Split Air Handler is designed for year-round heating and cooling, providing energy-efficient climate control for spaces 350 to 500 sq. ft.. This air handler pairs with the MRCOOL DIY® 5th Gen Condenser, delivering seamless operation, customizable comfort, and wireless control.

With a simple DIY installation, this indoor unit is easy to set up with the pre-charged QuickConnect® line set (sold separately). Enjoy hands-free temperature control via the SmartHVAC app, Amazon Alexa, or Google Assistant, or use the included remote.

📌 This listing includes only the indoor air handler. A compatible MRCOOL DIY® 5th Gen Condenser is required for full system operation.


Key Features & Benefits:

DIY Installation – No HVAC Technician Required

  • Works with pre-charged DIY® QuickConnect® line set (sold separately) for a vacuum-free installation.
  • No special tools or professional experience needed—perfect for DIYers.

Powerful Heating & Cooling

  • 12,000 BTU capacity, ideal for 350-500 sq. ft. rooms.
  • Operates on 115V power supply.

Smart Climate Control for Maximum Comfort

  • Adjust settings via SmartHVAC app (iOS & Android), remote, or voice commands with Amazon Alexa & Google Assistant.
  • Follow Me Function optimizes comfort by adjusting airflow based on the remote’s location.

Dehumidification Mode for Improved Air Quality

  • Dry Mode reduces excess humidity, enhancing indoor air quality.

DIYPRO® Cable – Enhanced Durability

  • Eliminates the need for electrical conduit, providing extra protection against outdoor elements and wildlife.

Industry-Leading Warranty

  • Limited Lifetime Warranty on select components.
  • 7-Year Compressor Warranty and 5-Year Parts Warranty.

Certified for Quality & Safety

  • Intertek listed (5031495) for compliance with performance, safety, and energy efficiency standards.

Specifications:

  • Brand: MRCOOL DIY®
  • Model: DIY-12-HP-WMAH-115D25-O
  • Capacity: 12,000 BTU
  • Coverage Area: 350-500 sq. ft.
  • Power Supply: 115V
  • Compatible Line Set: DIY® QuickConnect® (sold separately)
  • Control Options: Remote, SmartHVAC App, Alexa, Google Assistant
  • Functions: Heating, Cooling, Dehumidification (Dry Mode), Follow Me Function
  • Certifications: Intertek Listed 5031495
  • Compressor Warranty: 7 Years
  • Parts Warranty: 5 Years

Important Notes:

📌 This listing includes only the indoor air handler. A compatible MRCOOL DIY® 5th Gen Condenser is required for full system operation.

📌 Stock images may be used—actual product appearance may vary slightly.

📌 Professional Installation Not Required – Designed for DIY installation, but must be paired with a compatible MRCOOL outdoor condenser for full operation.


Need Help? Contact Us!

If you have any questions about the MRCOOL DIY® 5th Gen 12K BTU Mini Split Air Handler, please call us to speak with a customer service representative. They will be happy to assist you!

As always, purchase your MRCOOL parts and equipment from MRCOOL DIY Direct, the USA’s most trusted MRCOOL dealer.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 12730937331

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4.9 ★★★★★
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Isaiah
Lake Worth, US
★★★★★ 5
Dogs new favorite chew!
Awesome chew...my dog loves these and sits there licking the peanut butter for awhile before even starting to chew! So far its lasting longer than other chews I give him. They don't smell bad, no upset stomach and good ingredients. Highly recommend!
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Reviewed in the United States on August 26, 2025
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Laura E.
Port Orchard, US
★★★★★ 1
A treat, not a chewing bone. Lasts only a few minutes.
Short lived - lasts only a few minutes with our Golden's. I have used other products like Natural Pet collagen rolls which last a VERY long time with our voracious chewers.
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Reviewed in the United States on November 28, 2025
P
Verified Purchase
PS
San Leandro, US
★★★★★ 3
Not a happy customer
My Aussie ate the chew stick within 5min. Disappointed it didn't last longer. Won't buy again :(
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Reviewed in the United States on May 27, 2026
Y
yetanothereviewer
Fort Morgan, US
★★★★★ 4
Massive treats, no tummy rumbles, but a little pricey
I'm always a little tentative when ordering dog treats online, because you don't always know in advance where they're sourced from, or what weird processing might be done to them, or what weird additives might be thrown in. These are sourced in Mexico, and they seem to be straightforward in terms of ingredients. Phew! The smell of these is not the best, but if you've fed your dog collagen treats before, I'm sure you know what you're getting into with that. The dogs loved them, for sure. These treats are MASSIVE, so if you have a small or medium sized dog, you might want to cut them into two or more pieces. For my 60ish pound dogs, they were very large but manageable, and the way their eyes lit up when I presented it to them, it was like Christmas. LOL The only reason I'm docking a star is because these are not long-term chews, at least for my dogs. Yak chews will generally last for a couple of hours for them, which I break up over several days by taking the treat away after a while and giving it back to them the next day. These chews were gone within about 5-10 minutes. (Five minutes for my spazzy dog who acts like treats will disappear if they're not hoovered it into her gullet at breakneck speed, and ten minutes for the other who likes to taste his food on the way down.) At almost $6 a pop, these are pretty expensive for 5-10 minutes of enjoyment, so this isn't going to be a treat I buy for them on the regular. There were no issues with tummy rumbles or nausea or diarrhea afterward, so that's good. And I like getting a little more collagen in these kids because they're both getting up there in age, so their hips and joints can use a little extra love. If you've got the extra money to spring for these, or if your dog paces him- or herself reasonably with dog treats, this could be a good choice for you.
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Reviewed in the United States on September 8, 2025
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Verified Purchase
Willow
Bozeman, US
★★★★★ 5
My non-chewer loves these
He is not into chewing, tried many different ones. But he’ll chomp down on theses, and they seem to be all good stuff
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Reviewed in the United States on December 17, 2025

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