Caldwell Heating & Air Conditioning, Inc. has been servicing Chester, Montgomery, and Delaware counties for 41 years. From emergency repairs to routine maintenance, to installing home comfort systems, the dedicated team at Caldwell works hard to ensure that every customer's needs are satisfied.


  • Check blower motors, bearings
  • Check air filter
  • Check blower motors, bearings, outdoor
  • Check electrical connections
  • Check capacitors
  • Check contactors
  • Check operation of back up heat
  • Check defrost operation
  • Check refrigerant charge and temperature rise

Fall check on gas furnaces:

  • Test safety controls
  • Check flue pipe
  • Check base of chimney
  • Brush and vacuum burners
  • Brush and vacuum heat exchanger, if possible
  • Check electrical connections
  • Check blower motor bearings
  • Check air filters
  • Perform an efficiency test
  • Perform a CO test to make sure unit is operating properly
  • Clean flame rod
  • If heater is high efficiency, check out the intake and exhaust piping
  • Flush condensate trap
  • Flush condensate drain
  • Flush pump 


  • Clean condenser coil if needed
  • Clean out bottom of unit if needed
  • Check crank case heater
  • Check refrigerant charge
  • Check operation
  • Check temperature drop and thermostat operation
  • Check Superheat and sub cooling
  • Check outdoor disconnect 
  • Flush drain pan and drain line
  • Flush and clean condensate pump
  • Check air filters
  • Check electrical connections
  • Check capacitors
  • Check contactor
  • Check blower motor bearing
  • Check condenser motor bearing


  • Clean
  • Change pads