Benefits & Features

Comfort Made Simple

MRCOOL® 4th Generation Enhanced DIY®
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Easy DIY® Installation

Precharged R-410 Quick Connect® Line Set

Pre-charged linesets allow you to install this innovative ductless system without special tools, equipment, or training. Couplers are available for extended lengths. Check out our patent here.
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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.
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Smartphone App

Enhanced Control from Anywhere

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

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

24-Hour Comfort

We made Sleep Mode easy to program to save money, and let you sleep a little easier.
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Louver Position Memory

Remembers So You Don’t Have To

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

Corrosion Resistant

Live on the coast? Don’t worry, our condenser is built to resist long term corrosion.
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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. See rules and restrictions here.

Quick-Connect® Pre-Charged Line Set

Kink resistant for easier bending during installation

100% accurately precharged R-410A refrigerant

Standard lengths of 16ft and 25ft can be combined using optional DIY® Couplers for longer lengths

Simple to Use, Leak Proof, and Screw-on Quick Connect Valves do not require vacuuming

Quicker Installation than Conventional Line Sets

Strong UV protective insulation provides extra protection against sun damage, weather erosion, or destruction from animals or insects

Now Included: The DIYPro™ cable - a stronger electrical conduit that protects your cables from the weather and from gardening tools

DIY Quick Connect Line Set

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NOTICE: MRCOOL® products must be installed in accordance with all applicable local, state and federal codes and regulations.   Unless explicitly stated otherwise, installation must be completed by a licensed / certified HVAC technician.   ALL electrical connections to a power source must be performed by a licensed electrician and comply with local, state and federal electrical codes and regulations.

Do It Yourself with MRCOOL® DIY®