This article was posted on Thursday, May 01, 2014

As the almanac predicts; the summer of 2014 will be the driest summer in over 100 years expected to break records from 1947 and 1953. If your central air conditioner is not working properly, than you can bet your units will not be cool and your tenants will be calling.

Investing in a preventative maintenance plan for an air conditioning unit is the most savvy and cost-effective way to keep your A/C unit in good operating condition as well as dollars in your pocket.

The bottom line is that industry studies have demonstrated that regular, professional maintenance reduces common repairs up to 40 percent; increases the unit’s lifespan by 30 percent and increases the system’s energy efficiency up to 30 percent.  Keep in mind that even a new air conditioning unit requires regular maintenance in order to keep it operating at its best.

Below is a checklist of services included in a preventative maintenance plan.

Outdoor Unit/Air Conditioner or Heat Pump

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  • Clean or replace filter
  • Inspect unit and pad for proper level (adjust if necessary)
  • Clean dirt, leaves and debris from inside of the cabinet.
  • Inspect coil and cabinet (if cleaning is needed – additional estimate will be provided)
  • Inspect fan motor and fan blades for wear, tear and damage. (lubricate as needed)
  • Inspect  control box, associated controls/accessories, wiring and connections.  Controls may include contactors, relays, circuit boards and capacitors.      All control box and electrical parts should be checked for wear/tear or  damage.
  • Inspect compressor and associated parts for wear/damage. 

Indoor Unit/ Air Handler

  • Clean or replace filters
  • Inspect and clean blower assembly (includes blower housing, blower wheel and motor)
  • Inspect evaporator coil, drain pan and condensate drain lines. Clean condensate (if needed)
  • Inspect control box, controls, wiring and connections
  • Inspect conditioned air flow system (ductwork) – check for duct leaks 

While System is Operating

  • Monitor air  conditioning and heat pump systems for correct refrigerant charge and      temperature drop differential
  • Measure high and low side system pressures
  • Measure temperature rise and adjust airflow as needed
  • Check vent system for proper ventilation
  • Check  system for correct load of volts/amps
  • Monitor system operation per manufacturer’s specifications
  • Recommend  repairs or replacement as necessary: float switches, secondary drain pan, condensate line, etc.


Treat your air conditioner as you would your car. Your car requires regular maintenance like a tune-up and oil change.  Having periodic oil changes prevents your car engine from sludge build- up and if you don’t replace your oil for a long time, your engine can seize up and stop working which would then become a very costly repair.

The same concept applies to HVAC systems.  Your A/C unit also needs regular maintenance for optimal operation.

The above article was written by Eugene Dasov of West Coast Chief Repair. West Coast Chief Repair specializes in air conditioning, heating and appliances services. Please call (800) 810-7813 if you have any maintenance needs.

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