SKU: 83994360424

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

Sale price$423.00 Regular price$470.00
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

MRCOOL DIY® 5th Gen E Star 18,000 BTU Single Zone Mini Split Air Handler 230V, DIY-18-HP-WMAH-230D25-OMRCOOL DIY 5th Gen 18,000 BTU Single Zone Mini Split Air Handler 230V (DIY 18 HP WMAH 230D25 O) The MRCOOL DIY 5th Gen 18K BTU Single Zone Mini Split Air Handler is a high performance, energy efficient indoor unit that provides year round heating and cooling for spaces 500 to 750 sq. ft.. Designed to work seamlessly with the MRCOOL DIY 5th Gen Condenser, this air handler offers customized climate control, smart home integration, and easy DIY

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

The MRCOOL DIY® 5th Gen 18K BTU Single Zone Mini Split Air Handler is a high-performance, energy-efficient indoor unit that provides year-round heating and cooling for spaces 500 to 750 sq. ft.. Designed to work seamlessly with the MRCOOL DIY® 5th Gen Condenser, this air handler offers customized climate control, smart home integration, and easy DIY installation.

Using SmartHVAC technology, users can control the system via the included remote, SmartHVAC app, or voice commands using Amazon Alexa & Google Assistant. The Follow Me function adjusts airflow based on the remote’s location, ensuring consistent comfort.

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


Key Features & Benefits:

DIY Installation – No HVAC Technician Required

  • Prepares for QuickConnect® installation when paired with a pre-charged DIY® QuickConnect® line set (sold separately).
  • No special tools, vacuuming, or professional experience required.

Powerful Heating & Cooling for Large Spaces

  • 18,000 BTU capacity, ideal for 500-750 sq. ft.
  • Operates on 230V power supply for efficient performance.

Smart Climate Control – Anytime, Anywhere

  • Wireless control via SmartHVAC app (iOS & Android).
  • Compatible with Amazon Alexa & Google Assistant for hands-free voice control.
  • Follow Me Function adjusts temperature based on the remote’s location.

Built-In Dehumidification Mode

  • Dry Mode removes excess humidity, improving indoor air quality.

DIYPRO® Cable – Enhanced Durability

  • Eliminates the need for electrical conduit, offering extra protection against weather 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-18-HP-WMAH-230D25-O
  • Capacity: 18,000 BTU
  • Coverage Area: 500-750 sq. ft.
  • Power Supply: 230V
  • 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 18K 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: 83994360424

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4.9 ★★★★★
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Product Reviews
J
Jim
San Leandro, US
★★★★★ 4
Made of alloy and mostly plastic
Style: MagSafe Car Phone Holder, Style: MagSafe Car Phone Holder
This is a fairly decent MagSafe mount that attaches cleanly to an LCD car display. It works and looks good on my Tesla Model 3. The only part that is metal is the bracket but the rest seems to be made from a metallic looking plastic. I do like that the inside of the clamps can be adjusted independently and there’s a layer of silicone padding to protect the screen. I was able to make it pretty tight with no movement at all. It only works well on a “naked” phone or a cover that has MagSafe ring built in. I have a super thin case and it seems to hold pretty well so far but I do wish the magnets were a bit stronger. The good thing is that it uses a standard ball joint so I have other types of mounts that could easily fit in place of the MagSafe version. The only other thing that I think detracts from the overall “clean look” is the screened text on the clamp that simply says “Screen Holder”. It would have been better not there.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 24, 2025
K
Verified Purchase
K.G.
Chelsea, US
★★★★★ 5
EXCELLENT Product for using with the dash mount BUT not so good for all cars with the vent mount.
This is a great product for wireless phones worked perfectly for my SG S21 the mount is really good sturdy flexible and firm if done right. BUT the vent jack plug is short for my Camry 2018 doesn't hold the phone firmly. It keeps wobbling when driving. So if you're looking for using just the vent holder make sure your car has a short AC flap so it can mount the plug firmly hold the phone properly. The phone holder is amazing it works really good just the way it is shown in the description. So guys first check the flap size of your cars AC vent must be short if you're looking to use the Vent plug holder. But if you're going to use it only with the dash mount its fantastic and holds the phone really firm and good. I really love this product and highly recommend to buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 12, 2025
R
Verified Purchase
Richard shinnamon
Whiting, US
★★★★★ 5
Cell phone charger
Ok I've had alot of cell phone holdes,,,but this one is the best I've had. I use the vent clip when I start me car it open up to set my phone in and automatically closes to lick the phone I. And starts charging,,just remember to take oho e out before shutting off the cat because it work off you USB PORT so it needs the power in the unlock your phone Two thumbs up
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Reviewed in the United States on March 31, 2026
T
Verified Purchase
Tiffany Hammond
Port Orchard, US
★★★★★ 5
Fastens to the windshield and stay secure
Preformed well Good value for money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
M
Verified Purchase
MamaSylvia
Dallas, US
★★★★★ 4
This sticks to my Chrysler Pacifica!
I bought a new-to-me Chrysler Pacifica and of course wanted a phone holder or two for when my husband and I are travelling. I absolutely adore the car, but I've never had so much trouble finding a phone holder that would stick to the dash, no matter how thoroughly I cleaned it with alcohol! Finally found this one, but it only sticks if you do NOT activate the suction part. That pulls the sticky part off the dash. And it's not very attractive on top of the dash. I'm more concerned with function than appearance so I'm happy with it, and it works great. The phone stays put and stays charged, which is all I ask.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026

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