I have an older home that did not have a vent fan in the kids bathroom. Last year we added the vent fan, a NuTone 769RL. However, the bathroom (only about 10' X 7' in size) continues to
steam-up when the shower is in use. I recently removed the fan to check for obstructions in the vent ductwork, as well as to ensure the flapper on the fan exhaust was functioning properly. All seemed OK. I even got my wet vac and blew air through the ductwork and got up on the roof and ensured it blew-through OK--which it did. Yet the vent fan just does not even begin to remove the steam/condensation. I even tried opening the window and door--and nothing seems to help. Any suggestions? It would seem that that size fan should be completely adequate for this size of bathroom.
Commented on Dec 30, 2011
Thanks for the answers, but I'm still hoping for more ideas.