Performed HomeCare maintenance on two systems. Upstairs system has organic growth is growing inside the plenum (recommend APCO X to kill of the organic growth and to improve indoor air quality). Restored flame sensor. Cleared pressure switch tubing. Blower motor is pulling correct amps. Blower wheel is clean. Wet switch and ss1 are working properly. Flue pipe, gas sediment trap, and gas line are up to code. cleared condensate drain. Replaced 413 filter. Condenser coil is clean. Refrigerant pressures are good. Disconnect is working properly. Main floor has no ss1 on condensate drain, recommend wet switch in pan to ensure no water issues, flue pipe is single wall and rusting from the inside, dual capacitor is out of manufacture specs, insulation Is poor, and recommend a APCO X to help keep the system clean and to improve indoor air quality. Restored flame sensor. Cleared pressure switch tubing. Blower motor is pulling correct amps. Blower wheel is clean. Gas sediment trap and gas line a