I currently have a Carrier 58STA070-12 furnace and would like to convert it to a 58STA070-08 , the objective would be to get the lower blower CFMs.
The guys that performed a load calc told me that the blower speed was to high and that it is unable to remove the hunmidy from the house.
I looked at the specs between the 58STA070-12 (1/3hp) and the 58STA070-08 (1/5hp) and the only difference that I see is the HP of the blower motors.
Would it be possible to simply have a technician change out the blower motors in order to get the reduced RPMs? ..or is there more to it
Here is a link to the spec sheet for this model furnace