Elgin Heater service Upon my arrival I performed a 6 month checkup on 1 straight electric heating system. Flushed and treated the water removal system then verified system safety and performance. Found the system performing to manufacture specifications at this time. Bacterial growth has started to form inside the air handler. Spoke with the customer about my concerns. They plan to be moving here in the next few months and do not wish to move forward with any options at this time. If the home sales before the next checkup customer would like to let the new home owner use this final checkup if they can.