I hear a loud shrill noise coming from the fan area. Sounds like the noise made by a smoke alarm. happens about evry 6 weeks or so when the furnace comes onPost created: 2018-01-31 Type of Equipment: Furnace Views: 6
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Loud shrill noise coming from induction fan area. sounds like noise made by home smoke alarm. only happens about every 6 weeks or so when furnace comes on