A/1 Heating & Air Conditioning, Inc.

Preventive Maintenance
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 Air Conditioning 15 Point Preventive Maintenance
  • Install gauges and check operating pressures
  • Check capacitors and amp draw on all motors w/ meter.
  • Check air temperature drop across evaporator.
  • Check for adequate refrigerant charge and possible leaks.  
  • Check pressure/lockout controls for proper operation.  
  • Check outdoor condensing coil (Clean if necessary)   
  • Check compressor contactor for pitting.
  • Check indoor evaporator coil (Clean and sanitize)  
  • Check indoor blower motor and wheel (Clean if necessary)
  • Clean air filter/replace.
  • Lubricate all moving parts.  
  • Check and adjust thermostat.
  • Check all wiring and connections.
  • Check and flush condensate drain.  
  • Open up all ceiling diffusers & remove plastic from around filter grill (attic system)

 Heat Pump 17 Point Preventive Maintenance
  • Install gauges and check operating pressures.
  • Check capacitors and amp draw on all motors w/ meter.
  • Check air temperature drop across evaporator.
  • Check for adequate refrigerant charge and possible leaks.  
  • Check pressure/lockout controls for proper operation.  
  • Check outdoor condensing coil (Clean if necessary)   
  • Check compressor contactor for pitting.
  • Check indoor evaporator coil (Clean and sanitize)  
  • Check indoor blower motor and wheel (Clean if necessary)
  • Clean air filter/replace.
  • Lubricate all moving parts.
  • Check defrost cycle (winter)
  • Check and adjust thermostat.
  • Check all wiring and connections.
  • Check and flush condensate drain.
  • Check switching of reversing valve.
  • Check elect. auxiliary heat (Winter)

 Oil Heating 16 Point Preventive Maintenance
  • Clean burner & nozzle assembly 
  • Check all safety and limit controls
  • Check and set ignition gap
  • Clean fire box & flues
  • Check & replace oil nozzle
  • Check draft  
  • Check out complete furnace/boiler cycle
  • Inspect heat exchanger 
  • Check indoor blower motor and wheel (Clean if necessary)
  • Lubricate all moving parts.
  • Check combustion
  • Check and adjust thermostat.  
  • Clean air filter/replace (Furnace) or Drain expansion tank (Boiler)
  • Inspect power venter and/or flue piping (clean if necessary)
  • Check & clean oil pump screen
  • Check & replace oil filter

 Gas Heating 15 Point Preventive Maintenance
  • Check gas pressure 
  • Clean burners
  • Check draft inducer motor
  • Check pilot & thermo-couple assembly 
  • Check hot surface igniter or spark ignition 
  • Check complete furnace/boiler cycle 
  • Check indoor blower motor and wheel (Clean if necessary)
  • Check all safety and limit controls
  • Lubricate all moving parts
  • Inspect heat exchanger
  • Check and adjust thermostat
  • Check and flush furnace drain
  • Check for gas leaks
  • Check venting system
  • Clean air filter/replace (furnace) or Drain expansion tank (boiler)


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