PREVENTATIVE MAINTENANCE CHECKLIST Outdoor Units: • Confirm proper refrigerant level and adjust if necessary. • Clean out dirt, leaves, and debris • Inspect base pan for restricted drain openings • Coil cleaning as needed • Inspect fan motor and fan blades for wear or damage, lubricate as needed Indoor Units: • Clean blower assembly • Inspect evaporator coil, drain pan and condensate drain lines. Clean as needed • Check for gas leaks in gas furnaces • Inspect burner assembly • Inspect ignition system and safety control • Inspect heat exchangers • Inspect flue piping • Replace air filters • Static pressure testing & CFM tests on customer request. While Your System Is Operating: • Monitor system starting characteristics and capabilities • Listen for abnormal noise • Search for source of unusual odors • Monitor air conditioning and heat pump systems for correct refrigerant charge • Measure outdoor dry bulb temperature • Measure indoor dry and wet bulb temperature • Measure high and low side system pressures • Monitor gas furnace for correct line and manifold gas pressure—make adjustments as needed • Measure temperature rise and adjust airflow as needed • Check vent system for proper operation • Monitor system for correct line and load volts/amps • Monitor system operation per manufacturer's specifications • Provide system operation report and recommend repairs or replacement as necessary