Spotlight: MrCool DIY Ductless Mini-Split Heat Pump

Our latest MRCOOL DIY Ductless Mini-Split sales campaign started a few weeks ago, which means you probably saw our ads on Facebook or YouTube! Which means you might have found your way to our website, Ingram's Water & Air Equipment, with questions. What is a MRCOOL DIY Ductless Mini-Split? What is a heat pump? Are these units really DIY? Can I install it myself? Will the warranty allow for that?

Don't worry, we can answer all your questions.

What Is A MrCool DIY Ductless Mini-Split?

A MRCOOL DIY Ductless Mini-Split Heat Pump is an energy efficient, easy-to-install HVAC system. It consists of an interior air handler and an outside condenser. The air handler hangs easily on virtually any wall. The condenser is relatively lightweight with a compact footprint. Together they can deliver the air comfort you want to virtually any room in your home.

Will The MrCool DIY Mini-Split Heat & Cool?

Yes, every MRCOOL DIY Ductless Mini-Split is a heat pump. That means it can function like an air conditioner to provide cooling, then reverse cycle when needed to generate heat.

How Do I Hookup The Electrical?

The interior air handler portion of the MRCOOL DIY Ductless Mini-Split will be wired to the outside condenser. The outside condenser must in turn be wired to a disconnect box positioned somewhere on the exterior of your home. This kind of service will be simple for any electrician to perform.

Do I Have To Worry About Refrigerant?

Not at all! The MRCOOL DIY Ductless Mini-Split uses eco-safe R410A refrigerant. MRCOOL charges each system with this refrigerant at the factory. You won't have to add anything during installation. Best of all, the refrigerant lines use special "No-Vac" connectors that plug in easily. This prevents contamination from outside air and seals in the refrigerant.

What Do I Do With Excess Refrigerant Line?

Depending on your installation of the MRCOOL DIY Ductless Mini-Split, you may have excess refrigerant line left over between the condenser and the air handler. You can coil this neatly and store it behind and/or near the condenser.

Any MRCOOL DIY Ductless Mini-Split Questions We Didn't Cover?

Just let us know in the comments below, on Facebook, or on Twitter!

19 comments (view/add)
  • Sheri
    Posted on 3/7/2023

    Can you use a DIY 27k 3zone 4th generation with only 2 head units or do is it required to use all 3 ports?

  • Rebekah Quarles
    Rebekah Quarles from Ingrams
    Posted on 4/4/2023

    If the combined BTU capacity of the two air handlers equals at least 2/3rds of the condensers BTU capacity, then you can operate the system with only two air handlers connected.

  • Gary W Eisenmenger
    Gary W Eisenmenger
    Posted on 1/21/2023

    I am interested in installing a 2 zone unit in an upstairs having two bedrooms with sloping ceilings. Wall space is limited. Is there a problem with placing the air handler units approximately 24" off of the floor? What about under windows at the end of each room?

  • Rebekah Quarles
    Rebekah Quarles from Ingrams
    Posted on 2/9/2023

    Since the air handlers push air out from underneath the unit, we would not recommend this, as you would not receive appropriate airflow from the system if it were that close to the ground. You can technically still do this, however, you just may not get the best possible performance with an installation like this.

  • Mike McKenney
    Mike McKenney
    Posted on 11/16/2021

    I have a 24’ x 24’ garage that I’m interested in putting a unit in. How big of a unit would I need to buy to accommodate the space?

  • Dan Danowski
    Dan Danowski from Ingrams
    Posted on 11/17/2021

    Generally a 12k unit would be considered suitable for that space. Though that's a best guess. You might need more or less depending on local climate, insulation, and other factors.

  • Joe Moody
    Joe Moody
    Posted on 4/16/2021

    I've heard that Mr. COOL support is really lacking. If I have problems with installing or operating a mini split I bought from you can I call you for support or do I call the manufacturer? Are the warranties still good if I install the unit myself?

  • Dan Danowski
    Dan Danowski from Ingrams
    Posted on 4/26/2021

    You can always call us about anything you purchase from us. The DIY warranty is still good if you install it yourself.

  • sandra
    Posted on 1/21/2021

    If you buy a 3-zone unit, do you have minisplits in 3 places ALL with connections to the outside unit?

  • Dan Danowski
    Dan Danowski from Ingrams
    Posted on 1/22/2021

    Yes, that is correct.

  • Michael Dethlefs
    Michael Dethlefs
    Posted on 1/20/2021

    What if the lines aren’t long enough? The handler goes in a second story porch and the condenser on the ground floor

  • Dan Danowski
    Dan Danowski from Ingrams
    Posted on 1/20/2021

    Coupler kits are available to extend line length for the DIY installations. Here's an example:

  • Lynn
    Posted on 11/17/2019

    Can these be recharged after a few years.

  • Kyle
    Kyle from Ingrams
    Posted on 11/19/2019

    Yes, any qualified technician should be able to properly charge a mini-split.

  • Mervyn
    Posted on 7/26/2019

    What is the coldest outside temperature that a Mr Cool split system can still generate heat in the Winter? We're up in Michigan!

  • Kyle
    Kyle from Ingrams
    Posted on 8/6/2019

    The DIY is AHRI rated down to 17 degrees. However, for a very cold climate, you might be better served by a MRCOOL Hyper Heat.

  • John
    Posted on 5/24/2019

    Does the power line for the head unit get wrapped up in the Same bundle as the copper and condensation drain hose?

  • Kyle
    Kyle from Ingrams
    Posted on 5/28/2019

    Yes, it does.

  • Debra Kaufman
    Debra Kaufman
    Posted on 5/15/2019

    This system is great and is fairly easy to install. I recommend getting the line set cover for the outside wall.

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