Mr Cool 4th Gen Single Zone Air Handler

Easy DIY® Installation - Precharged R-410 Quick Connect® Line Set

Pre-charged line sets allow you to install this innovative ductless system without special tools, equipment, or training. Couplers are available for extended lengths

Energy Star - Certified Efficiency

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

Smartphone App - Enhanced Control from Anywhere

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

NEW DIYPRO™ Cable - Safety & Durability

The included DIYPro™ Cable eliminates the need for electrical conduit providing higher mechanical protection and durability

Follow Me® Function - Personalized Performance

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

Leakage Detection - Protecting Your Investment

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.

Low Ambient Cooling - Cooling Down to 5°F

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

Auto Restart - Never Lift a Finger

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

Sleep Mode - 24-Hour Comfort

We made Sleep Mode easy to program to save money and let you sleep easier.

Gold Fin® Condenser - Corrosion Resistant

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

Digital Assistant Ready - Google Assistant & Amazon Alexa

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

Best Warranty in the Business - Limited Lifetime* & 7 Yr Replacement* on Compressor + 5 Yr Parts

 4th Gen DIY®s have an optional LIMITED LIFETIME compressor warranty*, a 7-year compressor replacement* warranty, and a standard 5-year parts warranty for the original registered owner.