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Can I Add Multiple Air Handlers to a MrCool DIY Condenser (Updated 2020) - Ask the Expert Episode 220

In 2019 someone asked us, "Hey Dan, is it possible to connect multiple air handlers to one MrCool DIY condenser?" A year ago it wasn't possible to connect multiple air handlers to a MrCool DIY Mini Split. But the MrCool DIY Multi-Zone has now made it possible. In fact, you can connect up to 4 air handlers to a single MrCool DIY Multi-Zone condenser.

Watch the original answer to this question here

If you have any questions, please leave them in the comments below.

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Matt

I have a 36K BTU Mr Cool DIY I bought from you guys last year. I understand about the new multi-zone option for new DIY units. Can you clarify that only those will work for multi-zone, or can I add another air handler (somehow) to my current unit... got the one (4th gen I think) with USB stick for MR Cool remote app functionality/control. Thanks!

Joseph Wm McCord

How well do your units cool in the upper peninsula of Michigan????

Jamison

Do I need to install a two-zone DIY at the same time (both air handlers) or can I install the 18K and wait a year for some work to be done to a room then install the 12K? (FYI, my wife and I have started to watch your videos for fun. You do you, great job)

Jordan Sapp

These videos are incredible! DAN IS THE MAN and very funny too. Just can't say enough about how these videos made us smile keep up the good work. Jordan and Samantha

Quoc Pham

Can I buy a MrCool olympus cassette air handler to connect to a DIY multi-zone condenser?

Timothy Hertzog

Apart from the drain line, which I realize, must always flow down hill, would it be OK to run the refridgerant lines up about 15" into the attic and then down through the soffit to the condensor? Thanks for your help!

Jarhead

Can I use both cassette and ductless on a multi zone unit??

Jim

I’m new to mini split units, so a couple of basic questions (I think): I assume each air handler connects directly to the condenser by its own line set. I know line sets can come in different lengths, but do they have different capacities? Can the condenser unit be higher than the air handler, say in an attic, if you have proper ventilation?

Jeramy

I have a question I got the multi zone unit can I only run two the of air handlers and then in the future connect the thrid one for future room use just as long as I dont open the valves right?

Janet oconnor

Can I use the multi zone condenser for just one unit in the upstairs bedroom and add another unit in the living area at a later date? I was told that a condenser is either single or multiple and you cannot use a multiple to run a single zone.

Will

Can I upgrade my single zone DIY to a multizone condenser and reuse my old air handlers?

Jesse

Is it safe to only have one air handler running and the other one turned off? Or do they both have to be running at the same time. I have a 36k multizone condenser and 2 12k air handlers connected to it.

Madeline Blake

Thank you for sharing all this valuable information!

gary smith

Thank you for this detailed explanation! The video made it much easier to understand how adding multiple air handlers to a MrCool DIY condenser works. I really appreciate the expert insights and updated information – it's exactly what I needed to make an informed decision for my setup!