I have a new York Affinity high efficiency 80,000 btu 2 stage variable speed dc furnace.
The model is PV9B12N080UP11. When the inducer motor comes on, I hear a buzzing sound and hum which lasts for 30 seconds and then the sound goes away. The furnace is below the kitchen.
I'm not sure if that sound is normal for this new furnace. The blower dc variable speed motor is very quiet. My complain is about the inducer motor. I can hear the sound from the kitchen and also near the furnace room.