MRCOOL

MRCOOL DIY 5th Gen 12,000 BTU Wall-Mount Air Handler 115V

Regular price  Sale price  $768.00 $768.00 Unit price  Sold out
Shipping calculated at checkout.
12K BTUWi-FiComponent — not a full system

Currently, this item has stock

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  • Authorized MRCOOL dealer - full factory warranty

  • Free freight over $999 - ships in 1-2 business days

  • Real technical support from a certified HVAC pro

Product details

Transform your space with the 5th Generation MRCOOL® DIY® 12k BTU Ductless Heat Pump Single Zone Mini-Split Air Handler-engineered for easy, tool-free installation and powerful, efficient performance. Perfect for areas up to 550 sq. ft., this system delivers reliable heating and cooling without the need for professional help or specialized skills.

Included with the system is the innovative DIYPRO® cable, which boosts protection and simplifies the installation process by eliminating the need for traditional electrical conduit. It provides added durability and safeguards your system from outdoor elements and potential damage caused by animals or weather.

Stay in control with multiple user-friendly options. Use the included wireless remote, control your system through the SmartHVAC app available on iOS and Android devices, or operate it hands-free using Amazon Alexa or Google Assistant. The Gold Fin® condenser coating offers advanced corrosion resistance, making this system ideal for coastal and high-humidity locations.

Built for personalized comfort, the air handler features Follow Me® technology, which senses the temperature around the remote and adjusts the airflow accordingly. Dry Mode helps manage indoor humidity levels, reducing excess moisture and improving overall comfort in your space.

This system is also backed by one of the strongest warranties in the industry-a 7-year compressor warranty and a 5-year parts warranty. This system is also eligible for the MRCOOL® Care Program.

Combining simple installation, smart controls, and dependable year-round performance, the 5th Generation MRCOOL® DIY® 12k BTU Air Handler is the ultimate solution for efficient, personalized home comfort.

  • NEEP ccASHP Listed
  • Intertek listed 5031495
  • Easy DIY installation
  • Future-proof your investment with the included DIYPro® cable, eliminating the need for electrical conduit.
  • Keep the included remote close by, and MRCOOL DIY®'s Follow Me® function will track the air temperature around you to ensure maximum comfort.
  • The MRCOOL® Smart HVAC Controller® Module and App fully support Google Assistant & Amazon Alexa out of the box.
Shipping and Payments

We process orders within 1-2 business days. Once your order has shipped, you will receive a confirmation email with tracking information.

Estimated Delivery Times
Standard Shipping: 3-7 business days
Expedited Shipping: 2-3 business day
Express Shipping: 1-2 business days
Delivery times may vary during holidays, promotions, or due to carrier delays.

Order Tracking

Once your order ships, you will receive a tracking number via email. Please allow up to 24 hours for tracking information to update.

Refund and returns

We want you to love your purchase. If you're not completely satisfied, you may return eligible items within 30 days of delivery.

Return Requirements

Items must be:
Unused and in original condition

Returned with original packaging
Accompanied by proof of purchase
Non-Returnable Items

The following items cannot be returned:


Gift cards
Final sale items
Personalized or custom-made products
Digital products and downloads

Technical specifications

Specifications

Full engineering data for this system. Certified performance ratings per AHRI Standard 210/240.

Model DIY-12-HP-WMAH-115D25-O
UPC 840255587006

Performance

Cooling capacity 12,000 BTU

Electrical

Voltage 115V / 60Hz
Circuit breaker 15 A
MCA (min. circuit ampacity) 3.0 A
MOCP (max. overcurrent) 15 A

Physical

Line set pipe size 1/4" & 3/8"

Features

Wi-Fi Yes
Smart features SmartHVAC® app (iOS & Android), Amazon Alexa, Google Assistant, Follow Me® remote

Warranty

Parts 5 years
Compressor 7 years

In the box

What's in the box

Air handler Indoor wall-mount unit
Remote control Handheld + app
Mounting plate & hardware Included

DIY installation

Or book certified installation

Our licensed team installs what we sell - sized right, warrantied, done in a day.

Questions & answers

Before you buy

Everything homeowners ask about installing and sizing a MRCOOL system.

Can I DIY the install?

Yes. MRCOOL DIY systems ship with pre-charged QuickConnect line sets, so there is no refrigerant handling, no vacuum pump and no special tools. The MRCOOL app walks you through each step, and most homeowners finish a single-zone install in an afternoon.

What tools do I need?

A drill with a hole saw, a level, two wrenches and basic hand tools. The line set connects by hand and tightens with wrenches, and the mounting hardware is included.

Is a permit required?

Rules vary by county. Many areas allow a homeowner install with a simple permit, though the dedicated electrical circuit often needs a licensed electrician. Check your local code before you start.

What size do I need?

Match the BTU rating to the room you are conditioning. This listing shows its rated coverage in the specifications, and our system finder can size a room in about a minute.

MRCOOL DIY 5th Gen 12,000 BTU Wall-Mount Air Handler 115V

Regular price  Sale price  $768.00 $768.00

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