2013 Goodman System was blowing air but not cooling. Checked system and found return filter and media filter were being used. Both filters were dirty and in need of replacement. The media filter had a date of 2013 on it. Explained to customer that they should only be using one or he other as this puts strain on the system. Replaced customer provided return filter. Checked pressures and they are good. Checked capacitor. Checked drain line. System is working at this time. Temp inside is 80, down from 82 after running for 20-30 minutes