Originally Posted by
Jon Randolph
I have been told by HVAC guys that you can upsize the evaporator by 1/2 ton, but can not down size it at all.
That's also what I've been told, which is probably why Jim stated "The biggest concern I would look for is coil icing."
If the condenser can create more cooling capacity than the evaporator can handle, then icing up would be a distinct and very good possibility (I would think, and Jim confirmed it). Don't know what else it could cause, though.