The could be the second replacememnt uses up gas blowing apparatus for my 15 year old large effecient compelled air furnace. The first lasted 10 years before bearing failure on the blower. The OEM replacememnt from your local furnace repair shop was getting noisey just after 5 years thus purchased the Fasco A170 through Amazon. The completely new one was nearly a defined replacement for the OEM unit (will no longer manufactured). It installed perfectly and even was quieter running compared to the 5 12 months old device.
This survived one (1) 30 days. After your second month regarding operation, the unit started to sound hard when commencing and closing down. It will now be two (two) several months since instalation as well as hear the motor vibrate though the entire house hold and outside through the furnace fatigue when closing down. My guess is it will lock up totally as a result of defective serp bearings over the following week. » Read more..