MRCOOL® Next-Level Comfort, Made Simple.

MRCOOL® Next-Level Comfort, Made Simple.

MRCOOL multi-zone mini split system with indoor units, outdoor condenser, and pre-charged line sets displayed with a red

MRCOOL® Multi-Zone

Single 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

Free MRCOOL DIY Tool Kit with 5th Gen Mini Split Purchase

The Only True Do-It-Yourself Mini-Split Systems on the Market

✅ Get Yours Today! Shop True DIY MRCOOL Mini Splits – Pre-charged, and no HVAC license required. Beat the heat with easy installation and fast shipping!

NaN -Infinity
View all

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

✅ Now In Stock – Order Today!

NaN -Infinity
View all

What’s Hot - Top Picks Just for You!

✅ Exclusive Deals on Top-Rated Products

NaN -Infinity
Find Out Your Buying Power

Will Not Hurt Your Credit Score

Find Flexible Payment Plans

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.*

NaN -Infinity

Let customers speak for us

from 92 reviews
UV rap

Works great!

Richard Spurgeon
Non Adhesive Wrapping Tape for Piping Kit. 2" Wide, 50' Long
Easy buy and quick delivery

Easy buy and quick shipment

Charles Swackhammer
MRCOOL 35 FT Pre-Charged 3/8" x 3/4" No-Vac Quick Connect Line Set for Central Ducted and Universal Series, NV35-3834
Customer service & product delivery

Excellent service for all

Remy T Slavetskas
MRCOOL DIY® 5th Gen 16 ft. 1/4" x 1/2" Pre-Charged Quick Connect Line Set (for 9K, 12K & 18K Indoor Units)

I didnt need it but i used the 1/4 inch and 1/2 inch and it was great

Benjamin
3/8" & 5/8" MrCool DIY Coupler Kit - No Communication Wire for 24k & 36k Mini-Split Air Handlers
Weekend hvac replacement!!

First I welded a custom stand 18 inches high. And completed the install over the weekend. All the ductwork lined up perfectly the precharged lines made it very convenient impressed at the quality of the system. Very quiet as well. Will be back to replace my other 2.5 ton system on the other side of the house!!

Lawrence Holloman
MRCOOL Universal 4 to 5 Ton (48000-60000 BTU) 18 SEER Central Heat Pump Air Conditioner System MDU18048060
Works as intended

I needed longer lines to work with my set up and after searching for a set I found them here and they sent the quick and ready to install now the system is working great

Adam Cooke
MRCOOL DIY Pre-Charged Linesets - Select Your System & Length
Love it!

Great system at a perfect price!

Bethel Morris
12k BTU MrCool DIY Ductless Wall Mounted Air Handler - 4th Generation 120v

All good...

Mike
MRCOOL Mini-Stat Thermostat for Ductless Mini Split (Battery, Smartphone App)
Awsome

Easy to operate, does everything it supposed to, makes operating the Mr Cool mini split a breeze...
Thanks, Mike

Mike Boudreaux
MRCOOL Mini-Stat Thermostat for Ductless Mini Split (Battery, Smartphone App)
Awesome impressive product

Such an easy install. Pure perfection.

carla hord
MRCOOL 35 ft. 3/8" x 3/4" No-Vac Pre-Charged Line Set for Central Ducted Hyper Heat 2nd Gen & VersaPro 2nd Gen (R-454B Refrigerant)

The Instructions were pretty good.

Theresa Wright
MRCOOL Universal Series R410A A-Coil Evaporator Coils: 2-3 Ton and 4-5 Ton
Great system

Everything runs great, but the factory needs to make all the low voltage boards read the same. Also no stub kit with air handler. And I don’t like the t-stat ( must hook to Wi-Fi) .

John Minturn
MRCOOL Universal 4 to 5 Ton (48000-60000 BTU) 18 SEER Central Heat Pump Air Conditioner System MDU18048060

Re-Usable Filter for MrCool 24k Ductless Wall Mounted Air Handler

Brian Moran
Re-Usable Filter for MrCool 24k Ductless Wall Mounted Air Handler

MRCOOL Condenser Wall Mounting Bracket for 9K to 18K BTU MrCool Ductless Mini Split System (MB176)

Brad Wilson
MRCOOL Condenser Wall Mounting Bracket for 9K to 18K BTU MrCool Ductless Mini Split System (MB176)

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
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

View all
  • Infographic explaining DIY pre-charged mini split systems with R-454B refrigerant, highlighting no vacuum needed, quick-connect valves, cost-effective installation, and MRCOOL Gen 5 line set advantages.

    What DIY Pre-Charged Mini Splits Really Mean — ...

    James Lee

    Discover how MRCOOL’s DIY pre-charged mini split systems work without vacuuming, save you thousands on installation costs, and are truly homeowner-friendly. Learn why R-454B pre-charged line sets and quick-connect fittings...

    What DIY Pre-Charged Mini Splits Really Mean — ...

    James Lee

    Discover how MRCOOL’s DIY pre-charged mini split systems work without vacuuming, save you thousands on installation costs, and are truly homeowner-friendly. Learn why R-454B pre-charged line sets and quick-connect fittings...

  • 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...

    Chill Masterson

    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...

    The Evolution and Differences of MRCOOL DIY Min...

    Chill Masterson

    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...

    Chill Masterson

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

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

    Chill Masterson

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

NaN -Infinity
View all

MRCOOL News

View all
NaN -Infinity
View all
NaN -Infinity
View all

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!