Preventive Maintenance

Heating / Gas Furnace - Residential

• Replace or clean all filters (filters not included)
• Inspect the heat exchanger
• Check fan motors for proper voltage and amp draw
• Test system safety devices
• Lubricate moving parts if need
• Check thermostat operating and calibrate
  if necessary
• Check blower assembly
• Check and adjust burners
• Check ignition system
• Tighten electrical connections
• Check flue pipe
• Check burners and clean if necessary

Air Conditioning - Residential

• Replace or clean all filters (filters not included)
• Check outdoor coil
• Check indoor coil, if accessible
• Check operating pressures and temperatures
• Check unit for proper operating voltage and amp draw
• Test system safety devices
• Lubricate moving parts if needed
• Check thermostat operation
• Check blower assembly if necessary
• Check condensate drain
• Check start contactor
• Tighten electrical connections
• Check coil temperature drops

Gas Boiler Clean and Check

• Check steam pressure (steam)/check water temperature set point (hot water boiler)
• Check stack temperature
• Check boiler water level
• Check make-up tank water level
• Blow down boiler (if steam)
• Check automatic make-up feed valve
• Check for any water or steam leaks
• Check for proper combustion
• Clean and inspect nozzle (oil only)
• Check and test ignition electrode for pitting or combustion deposits and correct settings
• Check expansion tank pressure (hot water boiler)
• Lubricate and check electric motors
• Open and inspect low water cutoff devices
• Check water gauge glass and replace, if necessary (steam)
• Check all safety devices and controls
• Check all wiring and terminals

Oil Furnace

• Check electrical wiring - connections and insulation
• Check flue pipe condition and proper elevation
• Inspect combustion chamber
• Inspect for soot in heat exchanger
• Check fuel oil tank for sludge/water
• Change oil line filter and replace yearly or as needed
• Check oil lines
• Lubricate fan and fan motor bearings
• Check and adjust fan belt
• Check fan and limit controls
• Check and clean fan and motor
• Check volts and amps on fans
• Change air filters
• Check and set cad cell or stack switch
• Adjust air and set flame, if necessary
• Service burner (change nozzle, set electrodes, and check oil pump pressure)
• Conduct combustion efficiency test yearly
• Check limit safety
• Check temperature rise
• Check thermostat operation and calibrate if necessary
• Check primary control
• Check draft during operation
• Clean electrode and transformer terminals

Heat Pump (Split or Packaged)

• Check outdoor unit fan motor and lubricate, if required
• Check contactor contacts and replace if necessary (parts not included)
• Check electrical wiring and terminals
• Check all safety components
• Check compressor operation
• Check reversing vale for proper operation
• Check thermostat operation
• Check unit for defrost and heat (winter only)
• Check unit for cooling (summer only)
• Check unit for excessive noise & vibration
• Check crankcase heater if applicable
• Check refrigerant charge
• Inspect indoor and outdoor coils if accessible
• Check all safety and pressure switches
• Check motors, heater /voltage/amperes
• Check back-up heat and emergency heat source and controls for proper operation, including amperage
• Measure temperature rise in emergency heat mode