02/26/2026- we arrived on site and pulled the American Standard 7.5 ton unit into a vacuum below 500 microns before charging the unit back up with 410A refrigerant. This units data tag had no information about how much the refrigerant charge should be, however we have added 16 lbs and verified that the unit is cooling properly with all pressure readings being within range. I informed the customer that this unit is functioning correctly again and to contact us if he has any issues because we can adjust the refrigerant charge if necessary. This unit is working properly at the time of service.