Hi,
I'm looking for a temporarily solution to block an air vent register (to put at night before going to bed to reduce the noise, and remove in the morning to let the air flow). So far I've been using magnetic covers like this:

https://www.homedepot.ca/product/dun...nch/1000175443

First, is this product recommended to use? Depending on where you read, some people are advising to never block air vents, while others are saying it's ok to block 1 or 2 air vents in a home since there will be enough other places for the air to flow.

But even if they are ok to use, the magnetic covers are good to block the air flow, but not that good to block the noise. There is also the lever on the register to close the vent, but again this is good at blocking the air but not the noise. Is there a better alternative that's good at blocking the noise without being a hazard?

Thank you

 

If they are floor vents lift out the grill and put a sheet of plastic over the hole and reinstall the grill to hold it in place.

 

it's a register in a triangular shape like this:


I'm not looking for something permanently screwed in, just something to cover it at night to block the noise and remove in the morning, something that would not be a fire hazard or do any possible damage.

 

Now I know why you were asking. I hate that type of vent.

We close the vents in our bedroom in winter so we can sleep in the cold. Our registers are in the floor but I had to do some work to stop them from whistling and occasionally rattling.

I would get some thin, adhesive backed foam tape. Remove the grill so you can access the damper/door from the back side. Apply a strip of foam tape around the perimeter of the door or grill opening to form a squishy gasket for the door to seal against. This will help with air sealing to quiet whistling and will be good to stop rattles.

Another option would be to make your grill cover easily removeable. Then get some thick upholstery foam and cut a piece a bit bigger than the opening or duct size. Then shove the foam into to block the air. It needs to be oversized so it can hold itself in place so start big because you can always trim off a bit more to get the fit you want.

 

I'm not sure if I understand correctly, do you only block your vent at night, or is it always blocked all winter long

 

I don't agree about blocking the vents. Not that it will do any harm, but you're upsetting the balance of the air flow and overall efficiency. I would suggest you close off the damper in the duct line then adjust the other dampers accordingly. The noise problem is a bit trickier to solve. If you're going to close off the vent totally at night then just throw an old pillow or something to absorb the sound.

 

I tried adjusting the damper but it doesn't really blocks the noise

the only thing that helps block the noise is like you said a pillow or a blanket, I wish there was something that's less of a hazard, maybe a fireproof blanket

 

I would not worry about fire. It's only warm air.

 

I agree..... throw a pillow over it if it's that loud.
There is no danger of any type of fire with the low heat air.

 

A towel!