MRCOOL® Next-Level Comfort, Made Simple.

MRCOOL® Next-Level Comfort, Made Simple.

Single Zone MRCOOL®

Multi-Zone MRCOOL®

Universal® Series Ducted

2nd Gen VersaPro® Ducted

2nd Gen HyperHeat® Ducted

Package Units

Refrigerant Line Sets

Thermostats & Accessories

Condenser Mounting

HVAC Parts

Tools & Maintaince

Gas Furnaces

Condensers

Air Handlers

Line Guard Protectors

🔥 Limited Stock - R-410A Systems – Last Units Before They’re Gone!

Final Inventory Alert: R-410A systems are being discontinued, and prices on new R-454B models have already increased. —once they’re gone, they’re gone.

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Now In Stock MRCOOL® VersaPro™ 2nd Gen with R-454B Refrigerant!

✅ Now In Stock – Order Today!

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True Do-It-Yourself Mini-Split Systems

✅ High Demand – Get Yours Today!

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What’s Hot - Top Picks Just for You!

✅ Exclusive Deals on Top-Rated Products

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MRCOOL Mini-Split Heating Performance Data

Note: Models highlighted in yellow use the new R-454B refrigerant and are 2nd Gen Systems.

Condenser Model Heating Capacity (BTU/h) HSPF2-4 HSPF2-5 Min Operating Temp (°F) Refrigerant Type
DIY-12K 12,000 9.0 7.0 -13°F R-410A
DIY-18K 18,000 9.8 7.2 -13°F R-410A
DIY-24K 25,000 9.2 7.1 -13°F R-410A
DIY-36K 36,000 8.0 6.4 -5°F R-410A
DIY-48K 36,000 8.0 6.4 -5°F R-410A
VersaPro 18K 18,000 9.1 7.0 -5°F R-454B
VersaPro 24K 26,000 9.7 7.7 -5°F R-454B
VersaPro 30K 31,000 8.5 6.6 -5°F R-454B
VersaPro 36K 36,000 8.7 7.0 -5°F R-454B
VersaPro 48K 48,000 8.5 7.2 -5°F R-454B
VersaPro 60K 54,000 8.4 6.8 -5°F R-454B
EZ-Pro 9K 10,000 9.4 7.2 -13°F R-410A
EZ-Pro 12K 12,000 9.3 7.0 -13°F R-410A
EZ-Pro 18K 18,000 8.6 6.7 -13°F R-410A
EZ-Pro 24K 25,000 8.3 6.5 -13°F R-410A
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Credit Options for Everyone! Whether you're a first-time buyer or upgrading, we’ve got zero-interest plans* and hassle-free approvals to fit your budget

  • Authorized Dealer

    As the USA's Most Trusted MRCOOL Dealer, we’re dedicated to helping you create the perfect living environment with MRCOOL, the leading name in home comfort. One system at a time, we make comfort easy and accessible nationwide.

  • Design Your Own Multi-Zone System

    Use our custom designer tool to create a mini-split system perfectly tailored to your unique needs, lengths and specifications.

    Design Your System 

  • Free Shipping*

    Enjoy Free Shipping on all MRCOOL Full systems! We’re here to make creating your perfect living space easier than ever. From mini-splits to full heating and cooling systems, enjoy hassle-free delivery right to your door at no extra cost.

  • 30 Day Returns*

    Order your ideal HVAC system with confidence at MRCOOL DIY Direct, where we make satisfaction our priority. Whether you’re installing a mini-split, a central ducted system, or anything in between, we stand behind our products and are here to help every step of the way.*

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Let customers speak for us

from 73 reviews

MRCOOL DIY® 5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O

Denise King
MRCOOL DIY® 5th Gen E Star 18,000 BTU Single Zone Mini Split Complete System with 25ft. Line Set 230V, DIY-18-HP-WM-230D25-O

👍

MARIA DE BAUTISTA
Control Board for MrCool Ductless Heat Pump Condenser A-18-HP-C-230B
Refrigerant

This worked great to top off my DIY system

michael calonge
1.8 lb R410a Refrigerant Refill Kit with Gauge
The Right Part

Home Depot “recommended” the wrong line set for my HyperHeat air handler and outdoor unit. Mr. Cool DIY Direct had all of the information and the right parts for me to do this as a DIY project and not beak out my vacuum pump and flaring tools. Thank you for a great site and fast Shipping.

Gregory Bellamy
MRCOOL 15 ft. Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV15-3834
Worked great

A lot easier than going through MRCOOL direct. Unit still under warranty and couldn’t get them to send the part. Ordered it and was here in two days and took ten minutes to install

Vicky Ashmore
LOW AMBIENT Temperature SENSOR Room Temperature Sensor for MrCool Ductless Wall Mounted Air Handlers (SKU: 11201007003425)
Guest Cottage

Purchased a two-circuit condenser and installed a 9K and 12K fan unit in the cottage. The units work perfect, and the customer was beyond happy.

Corey Driggs
MRCOOL DIY Pre-Charged Linesets - Select Your System & Length
Lineset

Easy installation. No vacuum pump required. No leaks. Great.

David Schnittger
MRCOOL DIY Pre-Charged Linesets - Select Your System & Length
We love this minisplit thermostat

We've had our MrCool minisplit units (DIY) for just over a year now. We definitely love it! Our only complaint was rugged at 1 year, when the warranty ran out, our last minisplit thermostat started "eating" batteries. We literally had to replace the batteries ever few weeks. But, only 1 of the thermostats (of 2 in the house) did this, so we're hopeful this one will out last the last one!

Roland Pangle
MRCOOL Mini-Stat Thermostat for Ductless Mini Split (Battery, Smartphone App)
Mr.cool not fortress

I got Mr. Cool instead of fortress because of a delay on shipping. Mr. Cool is identical and little cheaper.

Malcolm Hazeltine
Rectorseal 84145 Fortress Lineset Covers 4.5 12'Wall Duct Kit

Product is great. I ordered the wrong size but thanks to awesome customer service it will be taken care of !!

Marcia
Re-Usable Filter for MrCool Ductless Wall Mounted Air Handler 9k & 12k BTU - Pair
it works as advertised A+

Excellent. Outstanding! I am very impressed at how simple the installation is/was. - the DIY Energy Star 24K unit puts out a ton of heat or air conditioning. Oh, and the exterior compressor wall mount worked better than expected.

At the cabin
MRCOOL DIY 4th Gen 24K BTU, 2 Ton, 20.5 SEER, Ductless Mini-Split Heat Pump Complete System (DIY-24-HP-WM-230C25)

Only dislike was the line set was hard to get bent to hook up with the outside unit, everything else was pretty easily installed. Love the Wi-Fi enabled thermostat. Would definitely purchase again!!!! This was my first HVAC install.

Mark
MRCOOL Universal 2 to 3 Ton 20 SEER Central Heat Pump Air Conditioner System MDU18024036

MRCOOL DIY 4th Gen 24K BTU, 2 Ton, 20.5 SEER, Ductless Mini-Split Heat Pump Complete System (DIY-24-HP-WM-230C25)

Jon Ruckel
MRCOOL DIY 4th Gen 24K BTU, 2 Ton, 20.5 SEER, Ductless Mini-Split Heat Pump Complete System (DIY-24-HP-WM-230C25)

1.8 lb R410a Refrigerant Refill Kit with Gauge

Larry Hart
1.8 lb R410a Refrigerant Refill Kit with Gauge
Board worked great!

Direct replacement control board worked great..

Jason D Capps Tennsco LLC
Electronic Control Board Sub-Assembly for Advantage Series Outdoor Condenser - Model A-12-HP-C-115C
Join The D.I.Y. Revolution! Make the Switch To MRCOOL! Home of the Only TRUE Do-It-Yourself HVAC Solutions.

Are you Next?

We understand you have many choices when it comes to buying your HVAC system, from big-box stores to online resellers. We encourage you to research and purchase from the source you trust most. So, why choose MRCOOL DIY Direct?

We’re not just another dealer; we’re an HVAC company dedicated exclusively to MRCOOL products. That’s what we know, what we trust, and what we excel at. From expert guidance before your purchase to reliable support during and after your installation, we’re here to ensure your experience is smooth and hassle-free.

How To Configure A Multi-Zone System Tutorial

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  • Comparison of MRCOOL 3rd and 4th Generation DIY mini-split systems showcasing energy efficiency and installation improvements

    The Evolution and Differences of MRCOOL DIY Min...

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    MRCOOL’s 4th Generation DIY mini-split system builds on the success of the 3rd Gen with significant upgrades in installation simplicity, energy efficiency, and more coverage options. Find out why the...

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    MRCOOL’s 4th Generation DIY mini-split system builds on the success of the 3rd Gen with significant upgrades in installation simplicity, energy efficiency, and more coverage options. Find out why the...

  • Configure and Build a MRCOOL DIY 4th Generation Multi-Zone Mini-split System

    How to design a MRCOOL DIY Multi-Zone Mini-Spl...

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    Building your own MRCOOL DIY multi-zone mini-split system is a smart way to ensure your home is comfortable year-round.

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    Building your own MRCOOL DIY multi-zone mini-split system is a smart way to ensure your home is comfortable year-round.

  • Thank you for trusting MRCOOL DIY Direct—your reliable source for everything MRCOOL

    Can I Really Install a MRCOOL Mini Split Myself...

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    Thinking about installing a mini split HVAC system yourself? With MRCOOL DIY Mini Splits, it’s easier than you think! These systems are designed for simple, tool-free installation, featuring pre-charged line...

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MRCOOL News

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  • RectorSeal surge protector installed next to a MRCOOL HVAC system – essential protection against power surges for home and business heating and cooling systems

    Why Surge Protectors Are a Must-Have for Every ...

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  • Comparison of MRCOOL VersaPro 2nd Gen vs. HyperHeat 2nd Gen central ducted heat pumps. They may look the same on the outside, but HyperHeat provides superior heating in extreme cold climates down to -22°F, while VersaPro is ideal for moderate climates.

    VersaPro 2nd Gen vs. HyperHeat 2nd Gen: Which M...

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  • all-new MRCOOL® Central Ducted Hyper Heat and VersaPro® Systems. The image features the MRCOOL logo at the top, with bold white and blue text announcing the new HVAC systems.

    The Future of HVAC is Here – Introducing the MR...

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MRCOOL DIY Direct is the USA's most trusted Authorized MRCOOL dealer, combining small-town values with nationwide reach. We deliver exceptional service, expert support, and reliable HVAC solutions you can count on—making DIY comfort accessible to every home.

USA's Most trusted MRCOOL dealer!