AC Coil Cleaning

Clean coils to improve efficiency

Keeping your coils clean can save you operating costs, improve longevity and improve indoor air quality.

  • Saves energy
  • Improves indoor air comfort
  • Reduces wear and tear on equipment
  • Complies with recommendations by equipment manufacturers
  • Should be a part of your regular maintenance plan

Air conditioning systems have two coils, one called the evaporator coil and a second one called the condenser coil. Coils are heat transfer devices that make heat removal possible. These coils must be kept clean to operate efficiently and provide the comfort you expect.

The evaporator coil is located inside the building, inside the ductwork, downstream from the furnace. In most homes this would mean just above the furnace, inside the plenum (the first few feet of the main supply air duct). The condenser coil is located outside the building but is connected to the evaporator coil inside the house by a pair of metal refrigerant lines that pass through small openings in one of the walls of the house.

Evaporator Coil Cleaning

How can you properly clean the AC Evaporator Coil component if you don’t access it inside the ductwork? You can’t.

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Dry cleanings are carried out by air washing the coil. This means a technician applies a compressed air stream and/or brushes to the fins of the coil to loosen and remove impacted material. If it is an indoor coil, a powerful vacuum is also needed to collect material as it is loosened. Wet cleanings use a biodegradable detergent of enzyme cleaner to dissolve and rinse impacted material that dry cleaning methods alone cannot effectively remove.

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The Evaporator coil is located in the airstream of your HVAC equipment and 100% of the air that heats or cools your home must travel through this Evaporator Coil. This means that a dirty Evaporator coil affects your cooling and your heating system.

A dirty evaporator coil can greatly diminish cooling efficiency, and make it appear as if you need a new air conditioning unit. It can restrict air flow forcing your system to run longer and more frequently and making it difficult to heat or cool your home. This translates into higher, and often wasted, energy dollars.

Evaporator coils produce condensation, and when added to caked-on dust and dirt, it creates the perfect environment for mold and mildew to live.


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