Heating Maintenance Performed Upon arrival system is working and operational. I began my maintenance in the crawlspace by performing a duct leakage inspection. I then proceeded to the furnace unit, I checked and tightened electrical connections. I inspected the heating components for proper operation and wear. Burners were inspected for proper operation. Flame sensor was cleaned. Condensates lines were inspected for proper drainage. Static pressures and temperature splits were taken. Filter has been checked, home owner will change once he gets new filters. Blower housing and wheel was inspected for balance and dust build up. Air supply was measured. Inspected safety switches as well as inspected home for fire and carbon monoxide detectors. Upon inspection of both units I found there to be no form of electrical protection, recommend adding surge protection to both units to protect the sensitive electrical components contained within the system. Upon departure system is working and ope