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  1. #1
    Join Date
    Jul 2011
    Posts
    17

    Default Making Furnace Quieter

    My forced hot air furnace is directly next to my home theater room and it is behind louvered doors (for airflow), so it can get pretty loud when it turns on it. Iím looking for some fairly cheap/easy ideas to minimize noise.

    Iím not an HVAC expert, so I donít want to take anything apart.

    My blower fan is currently set to the Medium-High setting on scale that goes High, Medium-High, Medium, Low. I was thinking about lowering the fan to Medium to reduce the air velocity, which I assume would reduce noise.

    Also, the main duct work coming off of the furnace is just sheet metal with zero insulation on it. I donít want to do anything like opening it up or changing it, but I was thinking about buying something like Roxul Enerwrap to wrap around the main ducts. Would that be a good idea?

  2. #2
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,073

    Default Re: Making Furnace Quieter

    Did you get your blower going?

    Furnace makers offer quiet furnaces, with more insulation. I just installed a Rheem super quiet furnace a week ago. The cost was higher than the super saver unit though.

  3. #3
    Join Date
    Jul 2011
    Posts
    17

    Default Re: Making Furnace Quieter

    I picked up the new circuit board, but I haven't gotten home yet to install it.

    Now that I've done some reading and learning about the furnace, I'm interested in taking some steps to quiet it down. Nothing drastic, but just some quick and cheap things if any will make a difference.

  4. #4
    Join Date
    Aug 2007
    Location
    Maryland
    Posts
    1,158

    Default Re: Making Furnace Quieter

    Is the louvered door for combustion air or is the return air through the door too.
    If the former maybe you can run a duct to a more remote location and put solid core doors on with gasketing and insulate the walls of the enclosure.
    If the latter, maybe a similar thing could be done. Even if a return was placed on the side, sound deaedening insulation could be placed in the duct.
    If done, be sure enough air is provided for combustion or return air.

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