4th Generation Multi-Zone

DIY 4th Generation

Enjoy next generation comfort.

With a new MRCOOL® DIY 4th Gen Energy Star Mini-Split.

Transform your space with effortless comfort.

Quick Connect

With our patented simple quick connect lines, you'll be able to install your MRCOOL® DIY® without needing specialized training or expensive tools.

Mount & Connect

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

Safe. Reliable. Future-proofing your investment.

Being comfortable. Anywhere. Anytime

Low ambient cooling

Keep cool in 5° weather

This feature makes the MRCOOL® DIY® the ideal system for server rooms, greenhouses, and any other application that requires cooling all year.

Gold Fin® condenser

Corrosion resistant

Live on the coast? Don't worry, our condenser is built to resist long term corrosion.

Optimized for comfort in all conditions.

MRCOOL® DIY® units go beyond seasonal adaptability, delivering tailored comfort even in the most challenging climates. From extreme cold to sweltering heat, their innovative design ensures consistent and efficient operation, allowing you to create the perfect indoor environment regardless of external conditions.

Comfort in the cold.

The MRCOOL® DIY® can heat even when temperatures drop below freezing,
with many models being able to provide warmth even when it's -13° F outside.

Temperature range.

The thermostat on a MRCOOL® DIY® unit typically allows you to set the temperature between 62°F and 86°F for heating. You can enjoy the heat you deserve with our MRCOOL® DIY® system all winter long.

Operation in Extremes.

The DIY® keeps up in most climates, and for the most extreme low temp situations it can also be used with additional heat sources for auxiliary heat.

Personalized. Smart control comfort.

Follow Me® function

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

Smart USB

Control your MRCOOL® DIY® anywhere with your Apple or Android smart device and an internet connection.

Louver position memory

Horizontal louver will automatically move to the same position as you set last time the unit was turned on.

Smartphone app

If you have WiFi, you can control your HVAC system from anywhere where you have internet access.

Easy comfort control anywhere: MRCOOL DIY® on-the-go

Whether at home or away, ensure your space is just right with simple taps on your device. Enjoy ultimate convenience and comfort on your terms, wherever you are.

Digital assistant ready

The new MRCOOL® Smart HVAC Controller® Module and App
fully support Google Assistant & Amazon Alexa out of the box.

Never lift a finger. 24-hour comfort.

Auto restart

Power outage? Don't worry, the MRCOOL DIY® auto restart will have
the unit running again in no time.

Sleep mode

We made Sleep Mode easy to program. This saves you money
and lets you and your family sleep a little easier.

Certified efficiency

Energy Star

Going above and beyond for efficiency while maintaining optimum performance and reliability, the 12K, 18K, and 24K models are Energy Star Certified.

Build a 4th Generation DIY System

Choose Your Outdoor Unit

Please note the DIY 4th Generation Energy Start unit below comes with a line set included. Options to choose a line set will not display when this bundle is selected.