Air Condition Feezing Up.

[Parmesh P.]

Last summer, I spend more than 1.7K on AC repairs ( adding refrigerant gas, cleaning coil and ducts, and much more) that seems to go nowhere. The AC for my second floor STR is not able to cool the unit during the hot weather. This unit has 2200sf with five bedroom and five bathroom. The AC unit and air handler are both 3ton and are 7 years old. I had three independent thorough assessment of the entire system and all three companies said the system is in great health and is working as it should. On further questioning I was refer to the top guy of two of these companies who said ALL COOLING UNITS are designed by manufacturer to keep the interior 20 degrees lower that the temperature outside and the thermostat should be set to reflect that. Most of what I am reading seems to support the 20 degrees split differential. However, to me, this seem to make no sense when considering temperatures of 115 degrees in central florida occurs very often. This "freezing up" problem seems to be widesread in centaral Florida. I am thinking of using a 5ton airhanler and heat pump to solve this problem.

My question is, did anyone ever had this issue? How did you solved it while maintaing and indoor temperature of 73 degrees in the hot weather?