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The unit has a low frequency oscillation. It appears like a harmonic. We can hear the first fans turn on, the ones to exhaust the gasses thru the flu. Also, when the gas burners igniote we can hear them. We have mounted the unit horizonatally in the attic on top of styrofoam insulation blocks tp isolate the system so as to minimize the noise
Submitted: 306 days and 14 hours ago.
Category: HVAC
Value: $9
Status:
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