Derek Cole, an HVAC specialist in southeastern North Carolina, says set your thermostat fan to auto, not on. A constantly running fan pulls humid outdoor air inside, raising indoor moisture and causing problems like black residue on grills. Dirt on the blower wheel can also throw it off balance and cut airflow.
Home and Life Comfort with Derek Cole.
In our part of the country, southeastern North Carolina, you really shouldn't do that, like ever. You want to always have the fan on auto, otherwise you're going to cause a humidity moisture problem in your house. So we always recommend it be on auto. When we have installed the new system I know I've been to two personally myself where the homeowners were putting it on, on, on for the fan, and black stuff was coming out of the grill, and they're like, what's going on? And we get there and the fan is on, on. Okay, we'll put the fan on auto. The challenge is that, yeah, even though it's 70 degrees here, humidity is like 80%, so you're just bringing that moist air into the space, and, and you want to dehumidify and get that out. So you want to leave it on, on. Now up north, they have their fans on, I think even like Illinois, and they might leave it on all the time. And it's funny because it's dry, it's a dry climate. That's not us here in North Carolina. So leave it on auto. I've never heard of it causing an imbalance of air problem. Not sure what's going on there. What can happen with that fan is the blower wheel will become unbalanced and that might be causing some of your issues there. So get that checked out. Dirt, debris, and everything can get on that little blower wheel and it will have trouble pushing the air into the space. So make sure that it's clean and it will be balanced if it's clean. If it's not balanced, then fix it so it's balanced.
