I have a 7yr old "arcoaire" furnace model #GNE075B12A2 and a Honeywell ST9120C 5013 fan timer/controller... my compliant is while the blower is EXTREMELY quiet through the vents in the house, the airflow isn't all that great... is there any way to increase the blower rpm as the temperature coming from the vents is great, but more airflow (more like what my friend's houses have) would be nice.
Previous owner stated the controller was also replaced once (I moved in 6mos ago), not sure if it was configured as it was originally or if the speed is even adjustable?
THANK YOU VERY MUCH FOR HELPING!!!
pic of controller below: