Completed diagnostic. Found system running good. Blower wheel is clean. Evap coil is clean with no rust or corrosion. All electrical connections are tight. No signs of drain clog. Temp difference in house is clean 19 degrees. With 53 degrees coming out of supply. Outside pressures are good and all electrical components are good with clean tight connections. System is cooling properly at this time. Informed customer that on days where outdoor temp is 95+ degrees the system will run much longer and may not get all the way down to temp just because of how hot it is.