America's MRCOOL DIY Specialists

MRCOOL DIY Mini Split Systems

Shop complete MRCOOL DIY mini split systems designed for straightforward homeowner installation. Compare single-zone and multi-zone options, explore current MRCOOL series, and find the right system for your room count, space, climate, and installation needs.

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Find the Right MRCOOL DIY System

Start with the way you prefer to shop. Choose by room count, system type, MRCOOL series, or use our Design Studio for a more guided recommendation.

Shop by Rooms or Zones

Choose a system for one room or build a multi-zone setup for up to six separate spaces. MRCOOL DIY mini split systems are designed for straightforward installation, whether you're upgrading a bedroom, garage, workshop, home office, addition, cabin, or your entire home. Start by selecting the number of rooms you want to heat or cool.

  • Perfect for bedrooms, garages, workshops, sunrooms, offices, additions, and cabins
  • Single-zone systems condition one room with one indoor unit and one outdoor condenser
  • Multi-zone systems connect multiple indoor units to one outdoor condenser
  • Available configurations support projects ranging from one room to six separate zones

Single-Zone or Multi-Zone

Compare single-zone and multi-zone ductless mini split systems to find the best solution for your home. Single-zone systems are ideal for one room, while multi-zone systems allow multiple indoor air handlers to connect to one outdoor condenser for customized heating and cooling throughout your home.

Compare MRCOOL DIY Series

Compare the MRCOOL DIY 5th Gen, EasyPro, DIY Select, and Hyper Heat mini split series to find the right combination of performance, cold-climate capability, energy efficiency, and installation features for your project.

Build Your System

Use the MRCOOL Design Studio to receive a personalized mini split recommendation based on your room count, climate, preferred indoor unit style, and heating and cooling requirements.

Open the MRCOOL Design Studio
939 Products
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (6K +...

27k (27,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,043.00 $5,053.75
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 2-Zone 27,000 BTU 23 SEER2 (9K +...

5th Gen 18,000 BTU 2 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,069.00 $5,086.25
View System
Sale DIY R-454B

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K +...

5th Gen 27,000 BTU 3 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,111.00 $5,138.75
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (6K +...

27k (27,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,119.00 $5,148.75
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 2-Zone 27,000 BTU 23 SEER2 (9K +...

5th Gen 27,000 BTU 2 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,136.00 $5,170.00
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (6K +...

27k (27,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,195.00 $5,243.75
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (6K +...

27k (27,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,202.00 $5,252.50
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 2-Zone 27,000 BTU 23 SEER2 (12K +...

5th Gen 18,000 BTU 2 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,228.00 $5,285.00
View System
Sale DIY R-454B

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K +...

5th Gen 27,000 BTU 3 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,269.00 $5,336.25
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (9K +...

27k (27,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,270.00 $5,337.50
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (6K +...

27k (27,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,277.00 $5,346.25
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 2-Zone 27,000 BTU 23 SEER2 (12K +...

5th Gen 27,000 BTU 2 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,295.00 $5,368.75
View System
Sale DIY R-454B

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K +...

5th Gen 27,000 BTU 3 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,345.00 $5,431.25
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 27,000 BTU 23 SEER2 (6K +...

27k (27,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,353.00 $5,441.25
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 36,000 BTU 23 SEER2 (6K +...

36k (36,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,415.00 $5,518.75
View System
Sale

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (9K +...

27k (27,000 BTU) 3 Zone
In stock
Free Shipping on Full Systems*
$4,457.00 $5,571.25
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 2-Zone 27,000 BTU 23 SEER2 (18K +...

5th Gen 18,000 BTU 2 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,484.00 $5,605.00
View System
Sale R-454B

MRCOOL DIY 5th Gen Multi-Zone 4-Zone 36,000 BTU 23 SEER2 (6K +...

36k (36,000 BTU) 4 Zone
In stock
Free Shipping on Full Systems*
$4,490.00 $5,612.50
View System
Sale DIY R-454B

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K +...

5th Gen 27,000 BTU 3 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,504.00 $5,630.00
View System
Sale DIY R-454B

MRCOOL DIY 5th Gen Multi-Zone 3-Zone 27,000 BTU 23 SEER2 (6K +...

5th Gen 27,000 BTU 3 Zone 208/230V
In stock
Free Shipping on Full Systems*
$4,504.00 $5,630.00
View System

Still deciding?

Turn your shortlist into the right system plan

Compare room requirements, system size, zone count, climate needs, and indoor-unit options before choosing the MRCOOL DIY system that fits your project.

  1. SIZE THE SPACE

    Choose the Right Mini Split Size

    Consider room square footage, ceiling height, insulation, sun exposure, climate, and how the space is used before estimating the heating and cooling capacity required.

  2. PLAN THE LAYOUT

    Single-Zone vs. Multi-Zone Mini Splits

    Use a single-zone system for one room or indoor area. Choose a compatible multi-zone system when several indoor air handlers need to connect to one outdoor condenser.

    Compare system types

  3. COMPARE YOUR OPTIONS

    Compare DIY Mini Split Features

    Review available system configurations, cold-climate performance, energy-efficiency ratings, indoor-unit styles, voltage requirements, and installation features before narrowing your choices.

  4. GET GUIDED HELP

    Build a Mini Split System for Your Home

    Use guided selection tools to narrow compatible systems by room count, layout, local climate, heating and cooling needs, and preferred indoor-unit style.

    Open the MRCOOL Design Studio

Need help choosing a ductless mini split system? We can help review room size, estimated capacity, single-zone or multi-zone layout, indoor air-handler options, and compatible system configurations before you order.

Get system-selection help

REAL CUSTOMER PROJECTS

Real Spaces. Remarkable Comfort.

Step inside garages, workshops, bedrooms, additions, cabins, and whole-home projects transformed with MRCOOL DIY systems.

Whole Home HVAC Replacement customer project

Residential whole-home HVAC replacement featuring a 4 Ton MRCOOL gas/electric packaged heat pump installed on the existing equipment pad.

PROJECT SPOTLIGHT

FEATURED INSTALLATION

Whole Home HVAC Replacement

The homeowner needed to replace an aging HVAC system that struggled to maintain comfortable indoor temperatures throughout the year. Rather than piecing together separate indoor and outdoor components, they wanted a dependable all-in-one solution that would provide reliable heating and cooling while fitting the existing installation footprint. A 4 Ton MRCOOL gas/electric packaged heat pump was selected to deliver year-round comfort for the entire home.

The starting point

The previous HVAC system had reached the end of its service life, resulting in inconsistent temperatures, declining efficiency, and increasing maintenance concerns. The goal was to replace the complete system with a modern packaged unit capable of handling the home's heating and cooling needs without major modifications.

The outcome

The replacement provided consistent whole-home heating and cooling with a single packaged system. The homeowner now enjoys quieter operation, improved comfort across the home, and a clean, professional installation designed for long-term reliability.

System
Whole Home Replacement
Configuration
4 Ton MRCOOL Gas / Heat Pump

David H.

Overland Park, Kansas

Verified

Explore more customer projects

Large commercial workshop conditioned with a 5 Ton MRCOOL heat pump package system featuring propane backup heat for dependable year-round comfort.

Heat Pump with Propane Backup

Commercial Workshop Climate Control

This large commercial workshop required a dependable HVAC solution capable of maintaining comfortable working conditions throughout every season. The owner wanted efficient electric heating and cooling during moderate weather while retaining the dependable performance...

The completed installation provides consistent comfort throughout the commercial shop while combining the energy-saving benefits of a heat pump with the dependable performance of propane backup heat during extreme winter conditions. The system supports productive year-round operation regardless of outdoor temperatures.

Commercial Workshop Climate Control5 Ton MRCOOL Heat Pump with Propane Backup

Commercial Workshop

Neosho, Missouri

2-Zone MRCOOL DIY Mini Split Installation customer project

Older Home Comfort Upgrade

2-Zone MRCOOL DIY Mini Split Installation

This older home relied on window air conditioners that struggled to provide consistent comfort while adding noise and reducing energy efficiency. The homeowners wanted a modern heating and cooling solution without the expense and...

The completed installation replaced noisy window units with efficient year-round heating and cooling while providing independent temperature control for two separate living spaces. The homeowners gained improved comfort, quieter operation, better energy efficiency, and a clean installation that complemented the character of the older home.

Whole-Home Comfort Upgrade

Yellowstone, WY

Step inside garages, workshops, bedrooms, additions, cabins, and whole-home projects transformed with MRCOOL DIY systems. Find a space that feels like yours, then see how the project came together.