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Temperature control for thousands less
Because of MRCOOL DIY

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The New MRCOOL DIY. Your Space At The Perfect Temperature

The only ductless air conditioning and heating unit that is easy to install for thousands less than a conventional HVAC system. MRCOOL DIY even adjusts the temperature to the perfect degree wherever you are in your room.

EASY DIY INSTALLATION

EASY DIY INSTALLATION

Easily install the MRCOOL DIY DIY using our simple mount, connect, and enjoy system. MRCOOL DIY provides to the degree comfort in your space whether you need head or AC.

Precharged R-410a Quick Connect Lineset

Precharged R-410a Quick Connect Lineset

The included Precharged R-410a Quick Connect lineset allows you to install this innovative ductless system without an HVAC repairman.

Low Ambient Cooling

Low Ambient Cooling

Keep the remote close by, and MRCOOL Premier will track the air temperature around you to ensure you receive maximum comfort.

Personalized Performance

Personalized Performance

Keep the remote close by, and MRCOOL Premier will track the air temperature around you to ensure you receive maximum comfort.

Leakage Detection

Leakage Detection

When the MRCOOL DIY detects low coolant an alarm will sound to alert you to the problem. This will prevent damage to the compressor while you maintain high air comfort.

Temperature Control
Down To The Degree

Easily control the temperature of your space from your phone or with the included remote control. The temperature adapts based on where you are in the room.

Quick Connect
No HVAC Repairman Necessary

With our simple quick connect system, you'll be able to setup your MRCOOL DIY without the expensive help of a HVAC repairman.

Mount & Connect
Easy Mount System

Getting your MRCOOL DIY system mounted and ready to go is a snap away. Using our easy mount system you'll be ready to go in minutes instead of days.

Pick the perfect MRCOOL DIY for your space

Every space is a little different. Whether your space is big or small we have the perfect MRCOOL DIY so you can be totally comfortable in your space.

mrcooldiy's levels of comfort
MRCOOL DIY 12000 BTU

Cool/heat up to 500 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

MRCOOL DIY 18000 BTU

Cool/heat up to 750 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

MRCOOL DIY 24000 BTU

Cool/heat up to 1000 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

MRCOOL DIY 36000 BTU

Cool/heat up to 1500 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

Filters Dust & Pollen

Ultra quiet

Energy Saving

Low Ambient Cooling

No-pressure peace of mind.

Rest easy with MRCOOL DIY's 30 Day Money Back satisfaction guarantee, premium 7-year compressor warranty, 5-year parts warranty, and Energy Star certification.

7-Year Compressor Warranty
5-Year Parts Warranty
Free Shipping & Returns
AHRI Certified

Why people love MRCOOL DIY

The New MRCOOL DIY Is Engineered For Comfort

No duct work needed.

MRCOOL DIY doesn't require any expensive ductwork. Simply mount, connect, and enjoy.

Degree Temperature Control

Control the temperature of your space down to the degree using MRCOOL DIY's sensor technology.

DIY Install

Simply install MRCOOL DIY without the help of an expensive HVAC repairman

It heats and cools extremely well. Along with the above stated functionality I am amazed at the quietness of the units. I had to touch the unit to be sure it was running.

Jennifer S

Let’s compare.
May the best AC & Heating system win.

No Duct Work

MRCOOL DIY is ductless. This allows you to quickly install the MRCOOL DIY unit into your space even if you don't have duct work in place. Avoid hiring an expensive HVAC repairmen and install it yourself.

Requires Expensive Ductwork

Conventional HVAC work requires installing expensive ductwork in your house, and ductwork repairs. This work typically costs thousands of dollars.

Cost Effective Equipment

From the start of your project to cooling your home, we will ensure that you are up and running with quality equipment, great cost savings and minimal effort.

Expensive Equipment & Utility Costs

HVAC equipment is expensive and often isn't optimized for utility costs. Don't be surprised if HVAC equipment runs you into the thousands of dollars even before installation fees and monthly utility costs.

DIY Installation

Simply follow instructions and install MRCOOL DIY yourself in hours. No need to hire an expensive HVAC repairman.

Expensive Installation

Installing an HVAC system often requires several days of work and thousands of dollars in professional installation costs.

Not sure what size you need?

Every space is a little different. Whether your space is big or small we have the perfect MRCOOL DIY so you can be totally comfortable in your space.

mrcooldiy's levels of comfort
MRCOOL DIY 12000 BTU

Cool/heat up to 500 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

MRCOOL DIY 18000 BTU

Cool/heat up to 750 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

MRCOOL DIY 24000 BTU

Cool/heat up to 1000 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

MRCOOL DIY 36000 BTU

Cool/heat up to 1500 sqft.

  • Easy DIY Install

  • 7-year compressor warranty and 5-year parts warranty

  • Free Shipping and 30 day money back guarantee

Join thousands enjoying their space in comfort.

Over 1560 verified customer reviews

1,560 Reviews

This was the best purchase and project I've ever done

This was the best purchase and project I've ever done! That's why this is the first review I've ever taken the time to submit. Fantastic product - and the packaging was amazing.

Jason W.

December 8, 2017

Ahhh, cold air!

I bought this for my 900sq ft, 2 br house, and it's awesome. I've just had it for the summer, but my house is an ice box. People love coming over!

Doug B.

June 8, 2017

Perfection!

I had my doubts about these simple DIY units, but after installing two of them, one of which ran very well for the entire summer, I'm a convert now.

RH Lee.

August 8, 2017

Your MRCOOL DIY questions, answered.

What exactly is the MRCOOL DIY?

A MRCOOL DIY Series heat pump is the only ductless mini-split system on the market explicitly designed for amateur installation. You don't need special tools or training to install this high efficiency heat pump. The line sets precharged with R-410A refrigerant, the quick hook-up electrical connections, and the quality engineering mean just about anyone can install a MRCOOL DIY in their home with no problem at all in only a few short hours. If you want great air comfort without paying an arm and a leg for installation, you want an easy-to-use MRCOOL DIY Series ductless heat pump.


  • Unlike any other ductless heat pump on the market, the MRCOOL DIY series is specifically designed for easy installation, the MRCOOL DIY series comes with precharged line sets alleviating 1 major obstacle to amateur installation in a single stroke.
  • 7-year compressor warranty and 5-year parts warranty
  • DC inverter and variable speed compressor technology cuts operating costs
  • Refrigerant leakage detection ensures your system remains operating efficiently without degradation due to undetected corrosion
  • MRCOOL DIY temperature compensation technology help keeps you comfortable in any weather conditions

Are the indoor and outdoor components included?

Yes, both the indoor wall mounted air handler and the outdoor condenser are included, along with the line set and communicating wire to connect the two units.

How efficient is this unit at low temperatures such as 10- 20F?

So far the lowest temperature that I have experienced with this unit is -7 Celsius which is 19.4 Fahrenheit and it was still making adequate heat but it was noted that there was a reduction in the heat output. You should have a supplemental or backup heat source if you live in an area where you experience consistent temps near or below freezing!

Does the inside unit come with mounting brackets?

Yes, and a nice template to drill the holes for the mounting bracket.

Does the system include the communicating wire to connect the indoor unit and the outdoor unit?

Yes, every MRCOOL DIY includes the communicating wire to connect the air handler, the indoor unit, and the condenser, the outdoor unit.

You’ll spend over 6000 hours in your space this year.
Be Comfortable.

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