• Genuine MRCOOL® Systems
  • DIY-Friendly Installation
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Genuine MRCOOL® Systems
DIY-Friendly Installation
Free U.S. Shipping
Secure Checkout
Sizing Help

Shop Comfort by Space

Find the right MRCOOL® system for the rooms and areas you use most.
DIY SIZING CALCULATOR

Find the Right
MRCOOL® DIY System
for Your Rooms

Get the right size before you choose your system.

Answer a few quick questions about your rooms and climate, and get guided toward the right MRCOOL® DIY single-zone or multi-zone setup.

Find My System
  1. Rooms
  2. Climate
  3. System Match
<p>Find the Right<br/>MRCOOL® DIY System<br/>for Your Rooms</p>

How many rooms or areas do you want to heat & cool?

1 Room 2 Rooms 3 Rooms 4+ Rooms

Most Popular MRCOOL® Systems

Start with the systems homeowners choose most for bedrooms, living areas, garages, workshops, and whole-home comfort.

MRCOOL® DIY® 5th Gen 12K BTU Single-Zone Mini-Split System – 115V

Single Zone12K BTU

MRCOOL® DIY® 5th Gen 12K BTU Single-Zone Mini-Split System – 115V

$2,359.00
$2,359.00
MRCOOL® DIY® 5th Gen 18K BTU Single-Zone Mini-Split System – 230V

Single Zone18K BTU

MRCOOL® DIY® 5th Gen 18K BTU Single-Zone Mini-Split System – 230V

$2,909.00
$2,909.00
MRCOOL® DIY® 5th Gen 24K BTU Single-Zone Mini-Split System – 230V

Single Zone24K BTU

MRCOOL® DIY® 5th Gen 24K BTU Single-Zone Mini-Split System – 230V

$3,329.00
$3,329.00
MRCOOL® DIY® 5th Gen 18K BTU 2-Zone Mini Split System with 2 × 9K Air Handlers 230V

2 Zone18K BTU

MRCOOL® DIY® 5th Gen 18K BTU 2-Zone Mini Split System with 2 × 9K Air Handlers 230V

$3,149.00
$3,149.00
MRCOOL® Universal® Series 36K BTU 3 Ton Heat Pump System – R-454B

Whole Home36K BTU

MRCOOL® Universal® Series 36K BTU 3 Ton Heat Pump System – R-454B

$4,472.00
$4,472.00
MRCOOL® EasyPro® 5th Gen 12K BTU Mini Split System 115V

Single Zone12K BTU

MRCOOL® EasyPro® 5th Gen 12K BTU Mini Split System 115V

$1,649.00
$1,649.00
MRCOOL® EasyPro® 5th Gen 9K BTU Mini Split System 115V

Single Zone9K BTU

MRCOOL® EasyPro® 5th Gen 9K BTU Mini Split System 115V

$1,569.00
$1,569.00
WHY CHOOSE COOLHEATDIRECT?

Premium Comfort. Simpler Decisions.

We make it easier to compare, choose, and shop MRCOOL® heating and cooling systems with cleaner product information, practical sizing guidance, and a more confident online experience.

Focused MRCOOL® Selection

Curated systems, clearly organized by BTU, voltage, room size, and system type.

Clear Buying Guidance

Simple, practical support to help you choose the right system for your space.

Built for Homeowners

A cleaner, more premium way to shop home comfort online — without the confusion.

Find The Right System

Shop by System Type

Explore MRCOOL® systems by installation style, coverage needs, and home comfort setup.

Why Homeowners Choose MRCOOL® Systems

Comfort, control, and flexible installation options designed for modern homes.

DIY-Friendly Installation

DIY-Friendly Installation

Quick Connect® line sets on selected systems help make installation more accessible.

Smart Comfort Control

Smart Comfort Control

Control selected systems through the SmartHVAC app and compatible smart home devices.

Heating & Cooling in One

Heating & Cooling in One

Year-round comfort from one system for bedrooms, garages, living areas, basements, and more.

Warranty Support

Warranty Support

Manufacturer warranty coverage available on many MRCOOL® systems for added peace of mind.

READY TO BUY WITH CONFIDENCE?

Ready To Find
The Right System?

Shop premium MRCOOL® DIY systems or use our sizing help to narrow down the right heating and cooling solution for your space.

Start Sizing Help Shop DIY Mini Splits