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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Forced air NG furnace...thermostat replaced (yesterday) and

Customer Question

Forced air NG furnace...thermostat replaced (yesterday) and now blower fan comes on BEFORE furnace burner ignites???
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: Double check the settings??
JA: Do you plan on doing the work yourself?
Customer: Rental property...thermostat install done by HVAC technician
JA: Anything else we should know to help you best?
Customer: Dose this have a connection to thermostat??
Submitted: 8 months ago.
Category: HVAC
Expert:  airheatman replied 8 months ago.

Is fan in AUTO mode?

What is model on furnace?

And model on thermostat?