Properly Performed spring/fall maintenance 3 systems. Checked all filters checked blower wheels for built up dirt/dust, took delta Ts, tested safety switches, tested all electrical components, tightened all electrical connections, took running volts/amps, monitored systems operations. Upstairs system air ducts are in bad shape, needs some upgrades No Secondary drain pan underneath the main floor and master bedroom air handlers. No wet safety switch on upstairs system drain, improper p-trap, no ss1 safety switch, bad blower capacitor. All air ducts are dirty