I'm not sure why anyone would put a dehumidifier in their
garage, as such. A garage can develop some considerable
heat, and the dehumidifier has to try to work against that.
The more the heat, the more humidity the air can hold.
If I were doing it, I'd be putting a window unit in a garage
window space, so that the heat could at least be removed to
the outside. And the more the garage heat, the more the
water that HAS been removed by the "dehumidifier" gets
drawn right back into the ambient hot air in the garage.
Refrigerators in garages often have to labor along a lot
longer, too. They are trying to get rid of their heat by way
of their coils, but the heat around them considerably
slows that process down.
But more effective ventilation may be in order.
And I've got moth balls in my tool boxes in the garage to keep
tools from rusting.
Not here to argue with you about your choices, just reminding
that I would make different ones.
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