Arrived at low cooling. Air handler and condenser running fine. Unit seems to be about 20 years old. Unit has a TXV. Cleaned condenser to get accurate reading. Super read reading was 31.4 and subcooling 1.6 before recharge. After recharge, unit subcooling stayed at a constant 1.0 but superheat got to 10.8. Unit is cooling fine but struggles to keep up in extreme heat. Customer acknowledged the status of unit and signed off.
