Do minisplits need to be winterized when off?
I have a Mitsubishi Hyperheat minisplit installed in a bonus room that is above our detached garage. 90% of the time the room is unoccupied. However I’ve been hesitant to turn it off over the winter out of fear any residual condensation might freeze and burst some part of the unit. I’m wondering if my fear is misguided. I certainly would prefer to turn the unit off and not heat an empty room for 4-5 months of the year.
If it matters, we live in Chicago.
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