Kitchen and Bathroom Fans - Low noise

5 years ago

Hi,

We are building a new house and I am not sure who is responsible to calculate the size for the kitchen and bathroom fans. I originally thought it would be the professional calculating the HL which it seems not be.

The house is in Ontario Canada and we would like some suggestions on good kitchen exhaust fan ( fan placed to outside wall) that would remove the smell ( open concept house) and will not be loud as an airplane.

We would also appreciate a similar suggestion for bathrooms fan. We are also installing a sauna ( dry) and a jacuzzi in one room in the the basement that will require a good ( large) size fan.

Reading some information in the internet, it seems we calculate the bathroom fan CFM using the sqft of the bathroom, is this the only concern I should have?

Thanks all

Featured Answer

opaone

5 years ago

"I didn't know the bathroom fans could be tied in to our HRV. Will discuss it with our mechanical contractor."

Actually a much better plan than individual exhausting bath fans.

"Hot tubs in the house are a bad idea. i always feel like Debbie Downer when i mention this. please google Hot Tub Lung."

If the room where the hot tub is located is properly vented then it shouldn't be any greater risk or much greater than outside. And I believe that both inside and outside are no risk so long as the hot tub is properly maintained?

That said, I prefer outside anyway. Sitting in a hot tub on a clear -6°c (20°f) night is a wonderful thing.

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Comments (11)

PRO
Mark Bischak, Architect
5 years ago
I had a client that wanted a noisy exhaust fan in his bathroom to help cover up his "reading out loud".
opaone
5 years ago
For the range hood you'll want an inline or external blower with a silencer between the hood and the blower.

More: https://bamasotan.us/range-exhaust-hood-faq/

Similar for bath fans; inlet>duct>silencer>duct>inline blower>duct>wall or roof cap. Some or all of your bath exhausts can/should be via your balanced ventilator (HRV/ERV). You can still place a silencer between the inlet in the bathroom and the HRV/ERV.

Sauna and jacuzzi should be in separate rooms with separate ventilation. Make sure you have good ventilation for your sauna with clean fresh air going to it.

More: https://bamasotan.us/2020/12/sauna-ventilation/
mqcola thanked opaone
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opaone
5 years ago
last modified: 5 years ago
Some good sauna book references at the end of this: https://bamasotan.us/sauna-intro/
mqcola thanked opaone
kaseki
5 years ago
I have used for decades the NuTone QT-80 bath fans; these are reasonably quiet and last a long time. After 30 years I just replaced the motor/squirrel-cage fan assembly on one of them. The slightly more powerful QT-110 (looks the same) had a blower motor/fan issue that led to free replacement every few years until Broan bought NuTone, after which the warrantly period only lasted 10 years. However, the latest iteration of replacement, acquired several years ago, seems to be holding up.

Review this forum for 'hood' threads. There is a lot you have to know and trade-off.
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Helen
5 years ago
I have the Panasonic Whisper fans in my bathroom and they are quite quiet and seem very effective. Mine turns on automatically when the ambient humidity level reaches a certain level and then turns itself off. In real life that means it turns on a few minutes after I turn on the shower and then runs for a bit after a shower.
mqcola thanked Helen
mqcola
Original Author
5 years ago
Hi, thank you all for the great information. @ opaone, I didn't know the bathroom fans could be tied in to our HRV. Will discuss it with our mechanical contractor.

thanks again for the information and links, I will do some research and read more threads on "hood"
kaseki
5 years ago
We will be happy to help with hoods and the related make-up air issues, but starting from scratch on each thread would wear out a lot of keyboards.
mqcola thanked kaseki
ILoveRed
5 years ago
Hot tubs in the house are a bad idea. i always feel like Debbie Downer when i mention this. please google Hot Tub Lung.
mqcola thanked ILoveRed
Seabornman
5 years ago
We also have the Panasonic Whisper Fans in our bathrooms. Almost too quiet. Occasionally I find one has been left on for days
opaone
5 years ago
BTW, never ever ever go from the hot tub to the sauna without washing off well with soap (and changing swim kit if you're wearing it). The chlorine (even w/ salt water systems) is quite unhealthy (and obnoxious). It can also get in to the walls and take a very long time or never to go away. A good way to ruin a sauna room.
mqcola thanked opaone