Extraction fans rattling in wind...

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384 posts

Ultimate Geek

#285885 23-May-2021 10:39

Hey there.

We have just moved into a new house that has been built in the last 2 - 4 years. It has extract fans in the laundry and both bathrooms which have cowls with gravity backdraft covers that rattle in the slightest bit of wind. The one on the laundry room also rattles when it is cold outside and we are warming the house as the warm air gets sucked out the vent without the fan on.

Does anybody have any recommendations for fans that open electronically or anything other solutions?

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Daynger

434 posts

Ultimate Geek

#2711701 23-May-2021 12:13

Put some foam tape on the cover or flaps, its still flap around, it will just be quieter.

tdgeek

29661 posts

Uber Geek

Trusted

Lifetime subscriber

#2711722 23-May-2021 13:51

1. Maybe tape a small weight, so that it works as normal when extracting but less affected by wind? Easy to test if using insulting tape to add it, can add a lighter or heavily weight if needed

2. Tape two 45 degree plastic fins on the bottom so that excess outside wind holds it's shut?

SirHumphreyAppleby

2838 posts

Uber Geek

#2711759 23-May-2021 16:07

I purchased a stainless steel cowl recently for a range hood as it was only a few dollars more than an over-priced plastic one.

Unfortunately, despite foam padding, it was very noisy in the wind. My solution was two small neodymium magnets, one glued to the body where I cut out a small section of the foam, and the other the cover. I used 5mm x 1.5mm N45 magnets. These were slimmer than the foam, so they would never bang together.