If your return air vent is making noise, you should check for any obstructions or debris that may be causing the noise. You can try cleaning the vent and ensuring that it is securely attached to the wall or ceiling. If the noise persists, it may be a sign of a more serious issue, and you should consider contacting a professional HVAC technician for further inspection and repair.
My car was doing the same thing but in mine, a dried leaf had made its way into the vent and was making the noise. Make sure the vent area is clear.
A toilet may be making noise if parts are wearing out or a problem exists in the plumbing. It may be a good idea to contact a plumber to see if there is a bigger problem.
Why not, it can pull warm air into the room.
The air from the vent should be 18 to 22 degrees F lower than the temperature of the air going into the return.
I would say ok on the supply but not hte return.
depends on room size
A bubbling noise in your toilet may be caused by a clog in the drain pipe, a malfunctioning vent pipe, or a problem with the water level in the tank. It is important to address this issue promptly to prevent further damage to your plumbing system.
fix the vent fix the vent
absolutely
Supply, return, vent.
To add a return vent to existing ductwork, you will need to locate a suitable area on the ductwork where the vent can be installed. Cut a hole in the ductwork, install the vent, and seal it properly to ensure efficient airflow. It is recommended to consult a professional HVAC technician for proper installation and to ensure the system functions correctly.
no not a good idea you should never have a return in the bathroom or the kitchen the return will recirculate the smell through out the house bathrooms need an isolated vent this keeps the smell outside the house