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Quieting a loud bath exhaust fan.
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woobagooba
Member Posts: 186
New bathrrom with remote fan. Two ceiling vents Y into the remote fan input about 15 feet away, then out the side of the building it goes. Similar install at another location is whisper quiet. This install … very loud. The difference? The quiet one is flex ducted, the loud one is hard piped. Ceilings are closed. Do I have any options to quiet the roar?
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Comments
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Presumably there is access to the inline fan ? Could maybe play around there to figure out which of the 3 pipes is making a harmonic or if it's the fan itself (vibrating) ?
30+ yrs in telecom outside plant.
Currently in building maintenance.0 -
Maybe putting in a damper and closing it slightly would help0
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Here is my access. You can barely see the two 4" pipes coming into the fan, then the 6" pipe to the outside.
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Looks like a treat to service lol. Looks like you cant get to the input side at all.
Is it an air rushing/swooshing sound ? Whistle ? Howl ? Low pitched hum ?
Can the fan speed be changed ?
30+ yrs in telecom outside plant.
Currently in building maintenance.0 -
Loud low frequency whooshing sound. I will check the fan speed detail.0
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