My furnace (Bryant 926TA) has to arrays of setup switches.
I am particularly concerned with SW1-3 (off in my picture) and SW1-4 (on in my picture).
The manual calls SW1-3
Low Heat Rise Adjustment and says
Turn ON to increase Low Heat airflow by 18 percent. This compensates for increased return air temperature caused with bypass humidifier.
SW1-4 is named
Comfort/Efficiency Adjustment and says
Turn ON to decrease low heat airflow by approximately 7 percent and high heat by approximately 10 percent for maximum comfort.
I do indeed have a bypass humidifier, and I have a few rooms that do not seem to have enough airflow to them.
I am considering turning SW1-3 on and SW1-4 off to try to increase airflow throughout the house, rather than installing a few duct fans.
If you have experience with HVAC/furnace installation/etc, are you aware of a reason the installers might have configured the furnace the way they did? Maybe it was just an oversight, but maybe there is a good reason for it that I am not aware of.