Today I arrived and met with Billy. Concerns from a home inspector, stating humidity was 69%, and the 2 front rooms were 6 degree difference. I first began by verifying system performance, system performs well with a 22 degree differential. As I began investigating concerns I checked the thermostat reading and it stated indoor humidity 69%, I verified using my psychrometer that the indoor humidity at the thermostat was actually 57-58%. The thermostat will need replacement due to improper reading. I also checked temperature differential between both front rooms and found them relatively the same within .5 degree difference, I believe the inspector may have used a laser temperature gun and pointed it at the register in ceiling because the temperatures I acquired using a psychrometer are in specifications. While in attic I also found a fresh air ventilation controller that is remaining open 100% of the time allowing hot humid air to enter the home 100% of the time, due to home being insu