Why is Preventive Maintenance so Necessary for Heating And Air Conditioning Equipment?

Preventive MaintenancePreventive maintenance is essential to the proper functioning of air conditioning and heating equipment. If preventive maintenance is not performed regularly or if it is done haphazardly, the equipment will require extensive and costly repairs at a later date that is sooner than it should be. This is not just a case of “pay me now or pay me later.” It is a case of “pay me now or pay me considerably more, later,” decreasing reliability while paying higher energy costs in the process.

Preventive maintenance programs of air conditioning and heating equipment include regular inspections at least twice a year. During these inspections, proper operation of the equipment is checked and verified. All mechanical equipment is designed to operate within certain limits, air conditioning and heating equipment is no exception, and if not properly maintained, the equipment will exceed its design limitations with the result being equipment failure. Your best insurance against HVAC failure and cost containment is equipment preventive maintenance.

What is Performed During Preventive Maintenance:

Heating Units

  • Inspect heat exchanger (Why we do this)
  • Inspect and operate heating controls, calibrate and program thermostat
  • Clean pilot orifice, adjust flame
  • Check and adjust main burners for proper combustion
  • Inspect and operate furnace safety devices
  • Check draft and vent or motor assembly
  • Inspect drive-sheaves, pulleys, belts and adjust tension
  • Lubricate all motors and shaft bearings (Why we do this)
  • Change filters (Why we do this)
  • Check and adjust air-flow, and temperature differential
  • Check unit smoke detector, clean filter if applicable
  • Inspect piping and valves for gas leaks

Air Conditioning Units

  • Check compressor efficiency
  • Check refrigerant level (Why we do this)
  • Clean condenser coil (Why we do this)
  • Clean condensate pan and trap
  • Change filters (Why we do this)
  • Inspect contactors and wiring
  • Inspect drive-sheaves, pulleys and belts (Why we do this)
  • Check and adjust for proper air-flow (Why we do this)
  • Lubricate all motors and shaft bearings (Why we do this)
  • Check, calibrate, and program thermostat
  • Check unit smoke detector, clean filter if applicable
  • Check safety disconnect, laser temperature
  • Check across contacts (Why we do this)

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