Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
Quieting a loud bath exhaust fan.

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?
0
Comments
-
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
-
Here is my access. You can barely see the two 4" pipes coming into the fan, then the 6" pipe to the outside.
0 -
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
Categories
- All Categories
- 86.9K THE MAIN WALL
- 3.2K A-C, Heat Pumps & Refrigeration
- 57 Biomass
- 425 Carbon Monoxide Awareness
- 109 Chimneys & Flues
- 2.1K Domestic Hot Water
- 5.7K Gas Heating
- 105 Geothermal
- 160 Indoor-Air Quality
- 3.6K Oil Heating
- 70 Pipe Deterioration
- 971 Plumbing
- 6.3K Radiant Heating
- 386 Solar
- 15.4K Strictly Steam
- 3.4K Thermostats and Controls
- 54 Water Quality
- 44 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements