MRCOOL

MRCOOL® 12k DIY 5th Generation Mini-Split Air Handler 230v

Regular price  Sale price  $689.00 $689.00 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

The 5th Generation MRCOOL® DIY® 12k BTU Ductless Heat Pump Single Zone Mini-Split Air Handler is the ideal comfort solution for spaces up to 550 sq. ft. Designed with homeowners in mind, this system offers true DIY installation-no special tools or professional HVAC assistance required. It's a fast, affordable, and simple way to upgrade your comfort.

The included DIYPRO® cable eliminates the need for electrical conduit, making installation even easier while adding extra protection against the elements and wildlife. This thoughtful design not only simplifies the process but also extends the system’s durability for long-lasting performance.

Once installed, controlling your environment is effortless. Use the included remote control, the SmartHVAC app on your smartphone (iOS or Android), or hands-free voice commands with Amazon Alexa or Google Assistant. You can schedule temperature changes, monitor energy usage, and adjust modes with ease.

This unit also includes smart comfort features like Follow Me® technology, which uses the remote to sense temperature and direct airflow where it’s needed most. Dry Mode helps manage humidity, improving indoor air quality and comfort. The Gold Fin® condenser coating provides corrosion resistance, making the unit well-suited for humid or coastal locations.

Backed by a 7-year compressor warranty, 5-year parts warranty, and eligibility for the MRCOOL® Care Program, this mini-split is built for reliability. Enjoy efficient performance, smart control, and simple installation with the MRCOOL® DIY® 12k system.

  • 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-230D25-O
UPC 840255587037

Performance

Cooling capacity 12,000 BTU

Electrical

Voltage 208-230V / 60Hz

Features

Wi-Fi Yes

Warranty

Parts 5 years
Compressor 7 years

Documents & downloads

Documents & downloads

Manuals, warranty terms and certification documents for this system.

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® 12k DIY 5th Generation Mini-Split Air Handler 230v

Regular price  Sale price  $689.00 $689.00

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