I have a small pool in the basement - 8ft x 14ft x 4.5 ft deep. The pool
room is isolated from the house with dedicated dehumidifier, heat and air
exchange. The problem is that I don't like the amount of noise heard
through the floor registers from the dehumidifier and heater fans.
Is there a way to muffle the noise before it reaches the floor registers?
Sort of like a muffler on a car exhaust?