transformer noise

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Old 01-03-10, 01:22 AM
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transformer noise

I just moved into a new house and it is my first home with gas furnace (previous furnace was electric). The new house (with original furnace) is reasonably new being built ~1999.

With the furnace switched to the "on" position (but not ignited) it makes a very loud humming sound. The house has a mechanical room that is indoors in the basement, and I can hear it through R-30 walls and an exterior door. My previous electric furnace didn't make near as much noise (or maybe none at all?).

Is this normal? Is there anything I can do to address this?

Thanks!
 
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Old 01-03-10, 01:38 AM
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The effect of AC voltage on the plates of a transformer causes strees in those plates, and can cause the kind of hum and noise when the plates are damaged or deteriorating.

Furnace transformers are usually pretty cheap. Replace it if you don't like it.

Also --- inspect the transformer for any defects, such as a loose or missing screw or mounting bracket.
 
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