Came out to call to recheck system after an inspection was done and the inspector said that the delta T temperature difference wasn’t enough. I checked system operation and charge. System is cooling at a 10 degree subcooling level, and the recommended level is 8 degrees, so the system is operating properly. As for the temperature difference in the home. I had 72-73 degree return air and 60-61 degree air coming out of the supply vents average of 13 degree difference. This system is operating properly. Temperature differences can vary due to heat in attic and longer runs from the system.