Checked filters (Customer is changing), checked thermostats, checked elements and blowers amps, checked evap coils, checked drain pan and blew out drain lines, checked/tightened electrical connections, checked blower capacitor, checked capacitors, checked fan and compressor amps, checked pressures and reversing valve (2015 unit was a little low), and checked condenser coils (No outside water). 2 systems: 2015 & 2013