AIR CONDITIONING AND HEATING MAINTENANCE
 

AIR CONDITIONING MAINTENANCE  (Spring Service)

• Clean condenser coil (outside unit) if necessary (Chemical Cleaning extra)
• Check all electrical connections on outside unit
• Check condenser fan motor for worn bearings and lubrication openings (where applicable)
• Check contactor points for burned or pitted contacts
• Check condenser coil for corrosion
• Check inside air return for air tight integrity and adequate filter grill surface area
• Check air return in attic for air leaks and proper size
• Check blower motor and wheel
• Check connections to evaporator coil (if accessible)
• Check for proper air flow for the system size
• Check the ducts visually to see any obvious trouble with the duct system
• Check thermostat
• Check outside unit through the entire operating mode to insure minimum power consumption and   maximum cooling capacity
• Inform home owner of any needed repairs or upgrades that might be needed in the near future
• Check temperature difference across evaporator coil (if accessible)
• Check refrigerant pressures

HEATING MAINTENANCE (Fall Service)

• Perform carbon monoxide leak test of heat exchanger/combustion chamber
• Check vent system for obstructions and carbon monoxide leaks
• Check heat exchanger for sooting, crack and deformation
• Inspect gas valve for leaks, corrosion, restrictions, proper opening and abnormal noise
• Inspect ignition assembly for proper lighting and flame monitoring
• Check for any gas leaks
• Check high limit controls and rollout switches
• Lubricate blower, combustion and pump motors (where appropriate)
• Inspect air filtration system
• Inspect gas burner system
• Check and adjust manifold gas pressure for proper flame control
• Check and tighten all required areas of the electrical system
• Check operation of thermostat and adjust if required and t-stat has adjustment capability
• Check temperature rise across heat exchanger for proper temperature. (diagnose if not correct temp)
• Complete operations sequence