High Humidity Despite Whole-House Dehumidifier
We completed building our home a couple of months ago. We decided late in the game to add and ERV onto each furnace. As a result, it was tied into the existing duct work (I know this isn’t ideal but we didn’t feel like ripping up the walls). On the system that services the second floor, we added a whole house dehumidifier. In the basement, we have two free standing large dehumidifiers.
On very hot, humid days, the humidity upstairs is significantly higher than the first floor. Since we have the whole house dehumidifier upstairs, the humidity levels should be much lower. Currently the humidity upstairs is ready
ing close to 70%. Way too high! On the first floor without the whole house dehumidifier, it’s 50%.
The HVAC contractor has come out and tells me everything is working correctly and is set up right. But it’s not. The humidity upstairs should never be this high.
Any ideas on what could be the issue? A malfunctioning dehumidifier? Anything else?
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