Came out to call for a customer concern about a system not cooling properly after we made repairs on it. I checked system over and found the thermostat set to 80 degrees and the system satisfied at 80. Turned thermostat down a couple degrees and checked operation. System is cooling properly at a subcooling temperature of 13 degrees. System requires 12. My guess is, since the home is vacant at the moment, that if someone came by to turn it on, it would take the system hours to drop temperature due to it being set at 80 degrees. Home also has a shallow roof line and barely any ventilation. You can feel the heat coming from the attic. There’s a lot of built up heat and humidity at 80 degrees and will take time to cool back down if being used. Set system to 78.