Click here to schedule
an appointment

Regular maintenance and cleaning of your home’s heating and cooling system will help improve the energy efficiency of your system, reduce the need for emergency service calls, and prolong its useful life. It is important to remember to make cleaning your air conditioner’s evaporator coils a part of your regular maintenance routine. It is not difficult to clean your system’s evaporator coils and it requires very little in the way of tools. You will see that learning how to clean evaporator coils is easy when you follow these steps:

  • Turn power off to your system. Switch the circuit breaker to your HVAC system to the off position in your home’s circuit box to prevent electric shock or damage to the unit.
  • Locate the evaporator. The evaporator is located in your air conditioner’s main duct that sits above your furnace.
  • Remove the foil-wrapped tape. This tape holds insulation in place between the air conditioner component and your furnace. Take care not to damage the insulation because you will need to replace it when you are finished.
  • Remove the screws from the unit’s access plate. You will now be able to access the evaporator.
  • Carefully slide the evaporator toward you if possible. Be careful not to damage the delicate pipework.
  • Removing dust. If there is minimal dust, you can blow it off with compressed air, vacuum it away or gently brush it off with a stiff brush. You may find a mirror helpful in seeing beneath the coils to make sure you have cleared all the dust away.
  • Extremely dirty coils. If the dust has adhered to the coils or mold is present, you may use a foaming cleanser that is recommend by the manufacturer of your system.
  • Check the tray for clogs. Pour approximately one tablespoon of bleach in the drain hold to prevent mold growth.
  • Close unit back up. Reinstall screws and re-tape the insulation back into place.

For more advice on how to clean evaporator coils or any other maintenance pertaining to your home’s air conditioner in the Richmond metro area, contact the professionals at Gilman Heating and Cooling. We're happy to help.