Hardware cloth will keep out bugs but mice will chew.
Prevent heat coming through vents in floor.
Replace the grates over each heating vent and turn your system back on.
Check your roof and wall vents for gaps between the duct and the wall.
Still let s go through some ideas on how you can reduce the noise coming through your air vents.
Once the ants have disappeared use soap and water to clean dirt from the vent walls as far in as you can reach then dry the walls with a rag.
Because the easiest and most effective solutions to stop noise from coming through air vents involve closing off the holes entirely i ll start by suggesting 3 ways to do that.
Return air vents suck in conditioned air from your living space and cycle it through the furnace to supply freshly heated air.
The only way to stop smoke from entering through a vent is by blocking the vent.
Popping noses from the ducts may be relatively easy to solve with a little effort on the part of the homeowner or they may be more complex in nature and require servicing such as cleaning or insulating the ducts by a qualified heating and air conditioning.
Block entry points to prevent the problem in the future.
If moisture is a recurring problem you may need to insulate the vents.
6 best ways to soundproof an air vent.
Unfortunately many nonsmokers especially those who live in dwellings with multiple units are subjected to second hand smoke that seeps through vents and other openings within the home.
Secure fine wire mesh over these gaps to prevent mice from entering.
Popping noises from the heating and air conditioning ducts can be very annoying and disturb you when watching television or sleeping.
To prevent mice from getting back inside your vents try using a layer of stainless steel mesh.
This will also help control mold.
If the mice persist you may want to call a professional exterminator.