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Posted: 1/11/2006 7:00:42 AM EDT
When our heater turns on it makes a loud sort of electric humming buzzing sound. The sound is very noticeable and distinct. It is an intertherm unit.

Anyone out there specialize in heating/cooling?

What would make this thing be so damn loud? Would I be able to fix it myself or is it going to cost an arm, leg and kidney?
Link Posted: 1/11/2006 7:04:46 AM EDT
draw down and do a double tap

I would say call a pro but their probably is one here.
Link Posted: 1/11/2006 7:05:37 AM EDT
Is it an electric unit or gas?

If electric it sounds like a sequencer or it could be a fan relay.

If it is gas it could be a fan relay.

If it has a control module (board) on it then it could be something on it making the noise.

Link Posted: 1/11/2006 7:06:29 AM EDT
electric heat?

shorted coil I'm guessing.

(Holiday Inn last night)
Link Posted: 1/11/2006 7:07:06 AM EDT
Link Posted: 1/11/2006 7:17:10 AM EDT

Originally Posted By Combatvet:

Is it a residential or mobile manufactured home?

Does it have a control board in it?

Link Posted: 1/11/2006 7:31:22 AM EDT
Could be the 240 to 24 volt transformer. Try giving it a tap with something non metalic. Or it could just be loose mounting screws.
Link Posted: 1/11/2006 8:07:57 AM EDT
Sounds like a contactor buzzing. SOme contactors have rubber pads to keep them from doing that and they deterorate over time. You need to pull the covers off and try & locate the source of the noise first, then go from there.
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