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Old 12-27-2011, 03:27 PM   #1
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noisy furnace


our furnace makes a "fog horn" sound it's quite loud It starts making the noise before the blower comes on

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Old 12-27-2011, 03:53 PM   #2
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noisy furnace


wow.....thats tough, but it could be the regulator at the meter or the regulator in the gas valve

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Old 12-27-2011, 03:57 PM   #3
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noisy furnace


Then call someone local to come take a look at it.
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Old 12-27-2011, 04:30 PM   #4
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noisy furnace


Age/model & brand of furnace would help. Extra bonus points for pictures.

If your furnace is older (30 yrs +) then thats almost always a gas / air shutter on the venturi opening of a burner that's too open.

If its younger than that then we need to know that your reference to the blower really means the main fan blower and not the inducer motor assy.

See if you can tell if the noice is coming from the burner area or the blower fan compartment.

Last edited by how; 12-27-2011 at 04:34 PM.
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Old 12-28-2011, 04:50 PM   #5
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Just shortly before the blower comes on. or just after the burners light?
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