Skip to product information
1 of 13


DIY-18-HP-WMAH-230C25 DIY 4th Generation Heat Pump Wall Mount Air Handler, 20.5 SEER Rating, 24K BTU

Regular price $724.00 USD
Regular price Sale price $724.00 USD
Sale Sold out
Shipping calculated at checkout.

Benefits & Features

✅ Effortless Control: Manage your indoor climate with ease using the Smart HVAC app on your Apple or Android device from anywhere.
✅ Adaptable Modes: Enjoy customized comfort with COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP modes for versatile climate control.
✅ Quick Installation: Mounts effortlessly on most interior walls with the included mounting plate, ensuring a hassle-free DIY installation.
✅ Smart Compatibility: Seamlessly integrate with Amazon Alexa and Google Assistant for convenient voice-controlled operation.
✅ Pre-Charged Convenience: Simplify installation with MrCool’s Pre-Charged Quick Connect Line Set, eliminating the need for vacuuming.


Item Dimensions: 42.52" (W) x 8.90" (D) x 13.19" (H)
Item Weight: 34.61 lbs
Item Color: White
Liquid Line Size: 1/4"
Suction Line Size: 1/2"
Refrigerant Type: R-410A
Noise Level: 44.5/37/31 dBA
Mount Type: Wall Mount
Line Set Length (Max): 98.42ft
Coverage Area (Max): Up to 1000ft²
Blower Motor: 1120/950/700 RPM
SEER: 22
Cooling Capacity: 18,000 BTU
Heating Capacity: 18,000 BTU
Phase: 1
Cycle: 60
Voltage: 208-230
Prop 65 Warning: YES

Made by MRCOOL®, the DIY 24K BTU Ductless Wall Mounted Air Handler sets a new standard in efficiency and comfort. Crafted with precision, this unit boasts an impressive 20.5 SEER efficiency rating, covering areas up to 1000 sq. ft. Its versatility shines through various modes including COOL, HEAT, AUTO, DRY (dehumidify), and SLEEP. Designed for ease, it features Smart HVAC app control, making temperature adjustments effortless. The lightweight design ensures simple installation on most interior walls using the included mounting plate. Compatible with MrCool’s Pre-Charged Quick Connect Line Set, installation becomes even more straightforward.


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

Matchup this with other MrCool Outdoor Multi-Zone Condensers:


Install Manual,
Service Manual,
Remote Manual,
Specification Sheet,

Call Now For Free Shipping!

Discover a secret to savings! Our exclusive offer: free shipping on selected items ONLY. We're sharing the secret to unbeatable deals on select items, and it all begins with a simple connection.

Why Contact Us?
Our team curates a selection of products, and we're thrilled to share these gems with you. These aren't just any items; they're the ones that make the most of your hard-earned money. Get in touch with us to explore which treasures qualify for free shipping and start experiencing unparalleled value today.

How to Reach Us:
📞: (352) 432-8730

Call Now For Price Matching!

At HVAC Delivered, we're committed to providing the most competitive prices online. We meticulously compare ourselves with others in the marketplace to ensure you get the best value for your money. While we strive to offer excellent prices on single-item purchases, we want you to know that we're ready to go above and beyond to match or beat a competitor's offer when possible!

Here are a few conditions we follow for price matching:

  • The competitor must have the item in stock.
  • The competitor cannot be a discounter or auction website.
  • The competitor must be an Authorized Retailer of the product.
  • Please note that we may not allow rebates or promotions to be combined with items we discount for price matching.

Avail Bulk Discounts:
Are you thinking of placing a larger order? We've got something special for you! Get in touch with our team, and let's discuss your bulk order needs. We'll provide you with a full estimate, complete with the maximum discount applied based on your order size.

Ready to unlock the best deals and save big? Contact us now to start your price matching journey and explore bulk discounts tailored just for you!

How to Reach Us:
📞: (352) 432-8730

Frequently Asked Questions about the DIY-18-HP-WMAH-230C25 DIY 4th Generation Heat Pump Wall Mount Air Handler, 20.5 SEER Rating, 24K 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.