Perfect bathroom vent fan - does it exist?
lannadelarosa
15 years ago
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blueribbon
15 years agoRelated Discussions
Bathroom Vent Fan
Comments (3)Mav, I know...there is that search box up by the top with a red button that is worthless for searching for posts. It is the same with galleries. The "galleries" heading up there takes you to some really useless place, but if you look at the Switch to Gallery link at the top and bottom of many of the forums, (when you are looking at the list of posts, not when one is open) you can go to a gallery of pics that users have posted. Took me a while to figure it out, too....See Morebathroom fan for a small bathroom
Comments (3)A bathroom exhaust fan should produce 4 air exchanges per hour. Your bathroom is 7 x 7 which is 49sq.ft Assuming an 8' ceiling the total volume would be 49 x 8 = 392cu.ft We want four complete air exchanges per hour so that would be 392cu.ft x 4 = 1568cu.ft per hour. There are 60 minutes in an hour so we divide 1568 by 60min and it equals 26.13cfm. You currently have a 50cfm fan, which is twice the size you really require yet your having problems with the mirror fogging up. I suspect your problem is not the fan. Nature abhors a vacuum therefore a fan cannot push air out of a room unless there is provision for an equal amount of air to enter the room. You can test the theory by running the shower and leaving the bathroom door slightly ajar to allow more air to enter the room. Generally they make a slightly higer gap under the bottom of a bathroom door to allow more space for makeup air to enter the room but in some circumstances that does not provide enough makeup air. The solution then is to install a duct through the wall to an adjacent room and put a grille on either side. That will allow the additional air....See MoreVenting a bathroom exhaust fan
Comments (14)"energy_rater, if you vent the humid air from a bathroom to the soffit, what's going to keep that moist air from going right into the attic?" back draft damper attached to bath fan housing. venting attached to back draft damper. venting exits soffit to exterior. fan being on will push air out of venting, venting to exterior of attic will keep moisture out of attic. also, if you ever take off the cover of the bath fan from inside the house..there is an oversized cut in the ceiling that is covered by the cover of the bath fan. sealing this cut is recommended to keep attic air/temps/ insulation particles out of houses. I use Hardcast brand mastic tape #1402. I also use this tape to attach back draft damper to housing of bath fan for air tight seal, and to attach venting to back draft damper. best of luck....See MoreVent bathroom fans through roof or gable wall?
Comments (10)JDS and Joe don't laugh at my lack of knowledge but explain something to me. We have wooden hexagon shaped attic vents in three gable ends. See link below - mine are similar to this. I need to remodel a bathroom and install an exhaust fan. Can we run the duct work to the exhaust fan out the hex attic vent? I would use the one closest to the bathroom of course. If so, how does the duct attach to the attic vent? I am assuming there are some type of clips or fasteners or thing-a-ma-jiggies that does that. DH and I DO NOT want to go through the roof, but would if absolutely necessary. I had always assumed we would need to go through the roof so this discussion may help solve our problem. Joe don't you dare get sarcastic - just tell me if I am on the right track. I would hire you to do this if you were in Kentucky :). And I wouldn't get three quotes. Hex wooden attic vent...See Morekevin1727
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14 years agoMasterworks Window Fashions & Design, LLC
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