I have a musty ceiling smell when I turn off the central air conditioning. It just smells awful. We can't get up into the "attic", there is only 2 feet of space from the ceiling to the roof.
I suspect it's leaking or something. It gets way worse when I turn on the central air conditioning or if I turn "up" the thermostat. It's a new roof. I can smell it in the rooms of the house, not just "up there". Would a dehumidifier help?
If you hired someone to put on that new roof it's time to call them AND call around for a second, third and fourth opinion of the cause. If it's because of bad workmanship and you can back that up with facts the company who caused the problem is responsible to repair. You might want to also test for mold 'just in case' because that is a major health hazard and spreads even in to dry areas :-( The roofing company is also responsible for that if it turns out to be because of their work.
If it's leaking, the leak must be discovered and repaired or redirected. Central A/C units usually have a condensation tube which directs the water into a drain. That may have been disturbed. Not sure what you mean by a musty ceiling smell but it sounds like you need a repairman. Good luck.
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