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Sound transmission through furnace exhaust vent
I live in a townhouse. Music from the attached townhouse next door can
often be heard very clearly through the cold air return in my master bedroom, even though it's not loud enough to hear through the walls. The heating systems of the two homes are not connected. I pulled the grill off of the cold air return to see if there was any obvious reason for the sound transmission. I was expecting that all I would see is the inside of the cold air return duct. What I saw was a large space underneath my bathtub and off to the left are two vent ducts. One is the hot exhaust from the furnace and the other is probably the kitchen fan exhaust. The hot air exhaust is definitely transmitting some sound. Is there anyway to insulate the exhaust line or the cold air return to the master bedroom from sound? I'm concerned about creating a fire hazard by putting material too close to the exhaust line. Kate |
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