I have been asking many questions lately and have an additional one:
My 3 ton AC is oversized for my 1100 square foot home (might even be 1000 ft based on my measurements). The ductwork is also undersized for this AC, but is probably sized correctly for the house. It is a 16 inch x 6 inch main duct and 5-inch ducts coming out of the air handler and also off the main duct.
Can the fan motor simply be slowed down so that the AC runs longer and is not so noisy in the ducts? Or will this make it too little air flow across the coil causing it to freeze?