We replaced our old oil furnace (feh!) with a nice new Bryant 355MAV-042080 gas unit (yay!). Now we find out that the contractor put a 3.5 ton blower under the existing 4 ton AC/HP coil. How bad is this? What's the effect of this in cooling mode, freeze-ups due to insufficient air flow?
Could this have been avoided? What would need to be changed, the fan, motor, both?