SKU: 14219948681

MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V, DIY-18-HP-WMAH-230D25-O

Sale price$423.00 Regular price$470.00
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Description

MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V, DIY-18-HP-WMAH-230D25-OMRCOOL DIY 5th Gen 18,000 BTU Multi Zone Mini Split Air Handler 230V Model: DIY 18 HP WMAH 230D25 O Ideal Coverage: Up to 750 sq. ft. Power: 230V Refrigerant: R 454B The MRCOOL DIY 5th Generation 18K BTU Multi Zone Wall Mount Air Handler offers year round comfort for larger areas such as great rooms, bonus rooms, garages, and more. Engineered to pair with MRCOOL DIY multi zone condensers, this indoor unit ensures efficient heating and cooling, modern

MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler – 230V

Model: DIY-18-HP-WMAH-230D25-O

Ideal Coverage: Up to 750 sq. ft. • Power: 230V • Refrigerant: R-454B

The MRCOOL® DIY 5th Generation 18K BTU Multi-Zone Wall Mount Air Handler offers year-round comfort for larger areas such as great rooms, bonus rooms, garages, and more. Engineered to pair with MRCOOL® DIY® multi-zone condensers, this indoor unit ensures efficient heating and cooling, modern controls, and simple DIY installation.

🔥 Key Features

  • DIY Installation: No vacuuming or special tools needed. Perfect for homeowners and pros alike.
  • QuickConnect® Line Set: Pre-charged with R-454B refrigerant for fast, mess-free hookup
  • Green Refrigerant: Lower Global Warming Potential (GWP) than R-410A for reduced environmental impact
  • DIYPRO® Cable: Outdoor-rated armored cable for superior durability without electrical conduit
  • Smart Wireless Control: Includes remote and integrates with the SmartHVAC App, Amazon Alexa, and Google Assistant
  • Follow Me Technology: Maintains your target temperature based on where the remote is located
  • Dry Mode: Reduces humidity and improves indoor air quality

📏 Room Size Coverage

This unit is ideal for larger rooms up to 750 sq. ft., including open-concept living areas or oversized bedrooms.

🛡️ Industry-Leading Warranty

  • Compressor: 7-Year Warranty
  • Parts: 5-Year Warranty
  • Lifetime Replacement: Available through MRCOOL® Care Program Enrollment

⚠️ Compatibility Notice

This air handler is pre-charged with R-454B refrigerant and is not compatible with older R-410A systems. Always pair with MRCOOL® 5th Gen R-454B multi-zone condensers and components for proper function.

Buy from MRCOOL DIY Direct – America’s most trusted source for DIY HVAC systems and parts.

Specifications & Dimensions

Specification Details
Model Number DIY-18-HP-WMAH-230D25-O
Cooling Capacity 18,000 BTU/h
Heating Capacity 18,000 BTU/h
Recommended Coverage Area Up to 750 sq. ft.
Power Supply 208–230V, 60Hz, 1 Phase
Minimum Circuit Ampacity 5 A (est.)
Maximum Fuse 15 A (est.)
Refrigerant Type R-454B
Line Set Size 1/4" Liquid x 1/2" Gas
Communication Cable Included Yes, 4-conductor
Wireless Control Remote, SmartHVAC App, Alexa, Google Assistant
Remote Sensor (Follow Me) Yes
Dry Mode Function Yes
Mounting Type Wall-Mounted
Dimensions (WxDxH) Approx. 39" x 8.5" x 12.5"
Net Weight Approx. 26 – 30 lbs
ETL Listing Number 5031495
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: 14219948681

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4.1 ★★★★★
Based on 6 reviews
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Product Reviews
A
Verified Purchase
Amber Nichols
Draper, US
★★★★★ 3
Eh...
Size: 5 in
I had high hopes for these cause we have other spot brand toys that have last a long time. Unfortunately these just don't hold up to the test! My dogs had them broken in about 5 - 10 mins. They did smell good tho and my dogs went crazy over them before I ever got them out of the bag. Lol.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 28, 2022
N
Verified Purchase
Nae
Bozeman, US
★★★★★ 1
Smells too strong
Size: 5 in
My dog hates the way this thing smells. She tries to play with it, but the scent is too strong for her nose. I know it's the scent because she usually sniffs it two or three times in between trying to grab it with her mouth. She treats it like an explosive in her mouth and quickly moves away after spitting it out. She used to have a bone that looked similar to this (same material) that was unscented and she gnawed the hell out of it. My sister's pitbull spent the night and chewed that toy into bits, leaving my Yorkie mourning the loss of her once treasured bone. Please make an UNSCENTED version of this toy!!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2023
T
Verified Purchase
Tamara L.
Battle Creek, US
★★★★★ 5
Worth the money for heavy chewers
Color: Brown-X
I finally found a dog chew that my puppy can't destroy in a half an hour or less. My puppy loves this, chews on it for hours and still holding up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
M
Verified Purchase
MM
San Leandro, US
★★★★★ 5
Holds up to a
Color: Brown-O
Bought this because of other positive reviews. It does hold up to an aggressive chewer but the pieces are sharp once it’s “broken in”. I bought the circular one as I figured that one would be less likely to break. It is still good after about 6 weeks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 22, 2025
K
KO
Whiting, US
★★★★★ 4
My dog didn’t take to it, but yours might.
Color: Brown-O
This is a very durable toy that’s reasonably priced. For some reason, my dog didn’t take to it. It might be the round shape, but there’s nothing wrong with the product. The size is good for large dogs. My dog is 50 pounds and there’s a chance it was too big for him. I’m not sure. But I think if your dog has enjoyed other similar toys, this is a good buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 15, 2025

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