Furnace & AC Tune Up Procedure Checklist:

Indoor Units

      • Inspect and clean blower assembly(includes blower housing, blower wheel and motor).
      • On older models, lubricate motor and inspect and replace fan belt if needed.
      • Check combustion blower housing for lint and debris and clean as necessary
      • Inspect evaporator coil, drain pan and condensate drain lines. Clean as needed.
      • Inspect for gas leaks in gas furnaces.
      • Inspect burner assembly -- clean and adjust as needed.
      • Inspect ignition system and safety controls -- clean and adjust as needed.
      • Inspect heat exchanger or heating elements.
      • Inspect flue system -- check for proper attachment to the furnace, any dislocated sections, and for signs of corrosion. Replace if necessary.
      • Inspect control box, associated controls, wiring and connections.
      • Clean or replace air filters.
      • Inspect conditioned airflow system(ductwork) -- check for leaks.

Outdoor Units

      • Inspect unit for proper refrigerant level and adjust if necessary
      • Clean dirt, leaves and debris from inside cabinet
      • Inspect bas pan for restricted drain openings - remove obstructions as necessary
      • Inspect coil and cabinet - clean as needed
      • Inspect fan motor and fan blades for wear and damage - on older models lubricate as needed
      • Inspect control box. associated controls/accessories. wiring and connections. Controls may include contactors, relays, circuit boards, capacitors, sump heat and other accessories. All control boxes and electrical parts should be checked for wear or damage.
      • Inspect compressor and associated tubing for damage.


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 pumps systems for correct refrigerant charge
      • Measure outdoor dry bulb temperature.
      • Measure indoor dry and wet bulb temperatures
      • 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 specification
      • Provide system operation report and recommend repairs or replacement as necessary