According to the manual for the Rheem Air Handler RBHK-21J00NHB, the unit
responds to a Humidistat's request for dehumidification by dropping the CFM to
85%. For a 2.5 ton compressor, nominal CFM is 1000, so it will run at 850
until the humidity has dropped to the setpoint. My question is this: After
reading a thread about the inadvisability of closing vents in unused rooms in
the house, the reason given to NOT do that is that the reduced airflow could
damage the unit. Wouldn't the same problems result from the 15% reduction in
CFM for reducing humidity?
Remove "not" for return address.