Blower Noise

Old 01-21-13, 08:42 AM
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Blower Noise

The blower in the furnace is a two speed blower. When on low speed it makes a whining sound that pulsates; sometimes in a regular pattern, someitmes in a raddom pattern. The sound is not loud, but can be easily heard. Is this indicative of a potenital motor failure?


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Old 01-21-13, 08:17 PM
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Noises are tough to diagnose on the internet.
Old 01-22-13, 12:24 PM
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Is this the small fan that circulates combustion air through the furnace or the large fan that circulates heat through the house?

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