Craig Cannon
New Member
Hopefully this is the correct forum.
In my master bath, there is a single exhaust fan installed and I'm guessing it original (house built in 92). I don't know the CFM, but it only has a 3" vent and based on the fan size I'm guessing 50 - 70 cfm. I know the fan is woefully undersized even though we do not have any mold/mildew issues.
The bathroom is 10 x 11 with a partial vaulted ceiling, so around 950 cu ft. The fan is over the toilet which is in a cubby hole, but no separate door (pics attached).
Options: I can install a new 110 CFM fan pretty easily, thought that is still borderline on minimum size. My concern is the 3" duct. Any idea if reducing a 110 fan to 3" will be problematic?
Second option would be to install a second fan over the tub/shower area. This makes the job larger and would require me to hire someone just to make sure it's done to code. I really hate to have to hire a contractor when I can replace the current fan myself, but think it may be the best option.
Thoughts?
In my master bath, there is a single exhaust fan installed and I'm guessing it original (house built in 92). I don't know the CFM, but it only has a 3" vent and based on the fan size I'm guessing 50 - 70 cfm. I know the fan is woefully undersized even though we do not have any mold/mildew issues.
The bathroom is 10 x 11 with a partial vaulted ceiling, so around 950 cu ft. The fan is over the toilet which is in a cubby hole, but no separate door (pics attached).
Options: I can install a new 110 CFM fan pretty easily, thought that is still borderline on minimum size. My concern is the 3" duct. Any idea if reducing a 110 fan to 3" will be problematic?
Second option would be to install a second fan over the tub/shower area. This makes the job larger and would require me to hire someone just to make sure it's done to code. I really hate to have to hire a contractor when I can replace the current fan myself, but think it may be the best option.
Thoughts?