Air Conditioning - Usage Comparison on Run Time

I have a Honeywell programmable thermostat that has a usage button on it. I have been checking it for the past two weeks and need a comparison from someone else. I know there are a lot of variables but I am just looking for a ballpark figure or percentage. I live on the east coast of central Florida. We have been having some high temps here for the past couple of weeks with no rain. I have a 4 ton carrier package system in manufactured housing. I know the insulation factor is a concern in manufactured housing. I have been showing a usage of between 8 hrs 15 minutes and 12 hrs 10min daily for the past couple of weeks. I have the thermostat set for 75 in the day and drops back to 72 at 11:00 Pm until 7:00 AM. I am still chasing a problem with my unit and the local service installer. The unit is 8 yrs old and still under warranty. Drop across the coil is 12 degrees at best and installer says there must be a leak in the return air line. I say no since the drop from the inhouse register to the entrance to the outside coil is only 1 degree over a 30 foot run. Also, the supply side drop from the unit to the closest register is about 2 degrees. In addition, I have hired an independent someone to check the ductwork and he found no leaks under the house to the supply entrance. The coil has been cleaned and the pressures on the high and low side are in range. Everything inside the home feels ok except for the run times. Any opinions and comparasions would be appreciated.

I look in to that 12 degree drop! Then id bet run time will to!

Since the evaporator coil on a package unit is exterior it is more highly affected by the environment. Does the sun shine directly on the unit during the day? Do you have any extra insulation on the ducts from the unit to the home? Is there any ventilation around the unit and under the home (or wherever the ducts run?)

Since the evaporator coil on a package unit is exterior it is more highly affected by the environment. Does the sun shine directly on the unit during the day? Do you have any extra insulation on the ducts from the unit to the home? Is there any ventilation around the unit and under the home (or wherever the ducts run?)

Direct sun on unit after 1:00 PM until 5:00 PM. Standard insulated ductwork underneath about 8 yrs old, flexible insulated duct. Yes, ventilation under home and around unit.

I'm with airman. If that 12 degree drop is accurate across the coil you need to address it and try to get it up.

I live on the east coast of central Florida. We have been having some high temps here for the past couple of weeks with no rain. I have a 4 ton carrier package system in manufactured housing. I know the insulation factor is a concern in manufactured housing.
You down near west palm??
How many sq ft in the home for that 4 ton?
Im with the others you should have a 16o to 20o drop over the coil there. Down there id set the tstat and let it alone. I set mine there to 78o and let it alone. Your more after the humidity there . Might see if you can slow the blower down a little. Thats what will make you feel cool.
You say its hot there Ha. We had 103o here to day.
ED