Furnace Fan Noise Reduction

Installing an acoustic rubber pad under the furnace specially if it is sitting on concrete will damp the vibration you hear through the pipes although the blower fan and motor are the most obvious parts to check take a look at the complete unit.

Furnace fan noise reduction.

One that is generally needs repairs and the type of sound you re hearing can help determine the exact issue with the system. Fiberglass duct liner absorbs noise and contributes to indoor comfort by lowering heat loss or gain through duct walls. I used to measure in the furnace room at a distance of 1m from the blower door 62dba and after installingthis foam it went down to 58dba. Follow the following procedure when building sound insulation for the furnace.

While the motor and fan inside your furnace makes considerable noise you don t exactly want it to sound as if you re standing next to a train when you go up next to it. There are many ways of reducing noise through the duct work but the easiest and most effective method without restricting airflow is installing an in line noise muffler. The sponge also offers a cleaning effect to your furnace. Sandwich the magic eraser sponge with a galvanized steel sheet.

Use a wire mesh to make the sheet. Furnaces generally aren t noisy and most modern furnaces are designed for noise reduction. Train noise coming out of furnace. Fiberglass duct liner is designed to be installed inside sheet metal ductwork and plenums.

This had a noticeable sound reduction effect since it cuts the noise right where it originates. For effectiveness use the foam next to the blower intake. Or if you have the space for it build some baffles out of 2x4 acoustic ceiling tiles inside the return chamber like below. Make sure that your furnace filter is clean and isn t restricting airflow by being dirty.

Sound damping melamine installed right besides the blower in the furnace.