Dear Customers, Welcome to the launch of our new website — formerly known as MRCOOL ONLINE! We’re currently updating our product catalog to include the 5th Generation DIY Multi-Zone and Single-Zone mini-split systems. In addition, we’ll soon be offering the Versa Pro line of central heating and cooling systems, a value-based option ideal for more moderate climates such as the Southwest Coastal region of Canada. Please note that MRCOOL is transitioning its inventory to the new R-454B refrigerant, and systems featuring this refrigerant will be available to ship in the coming months. Thank you for visiting Horizonsun Heat Pumps. We hope you enjoy a smooth and pleasant online shopping experience. Warm regards, The Horizonsun Heat Pumps Team Dismiss

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MRCOOL® 4th Generation E Star DIY®

Single Zone DIY 4th Generation E Star Mini Split

Comfort Made Simple

BENEFITS & FEATURES

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.

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 the MRCOOL® Follow Me® Function will track the air temperature around you to ensure you receive maximum comfort.

Leakage Detection

Protecting Your Investment

When the MRCOOL Easy Pro® 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 Easy Pro® 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® 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 a little easier.

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.

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. See rules and restrictions here.