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How Do You Clean Refrigerant Coils?

Published in HVAC Maintenance 2 mins read

Cleaning the outdoor refrigerant coil, also known as the condenser coil, is a straightforward maintenance task that helps your HVAC system run more efficiently.

A simple method for cleaning the condenser coil involves using water to remove common debris.

Cleaning the Condenser Coil with Water

According to the provided reference, a simple wash with water is effective for clearing away accumulated debris. A simple wash with water will help clear your coil of grasses, sticks and fuzzy plant materials like dandelion heads and cottonwood fluff that accumulate in the coil. This build-up can restrict airflow and reduce the system's performance.

What You Need:

  • A garden hose
  • An adjustable nozzle for the garden hose

Simple Steps:

  1. Turn Off Power: Before starting, always turn off the power to the outdoor unit. You can typically find the disconnect switch near the unit or turn off the corresponding breaker in your electrical panel. Safety is paramount.
  2. Remove Large Debris: Manually remove any large sticks, leaves, or trash visible around the unit's exterior.
  3. Wash the Coil: All you need to clean off the condenser coils is a garden hose with an adjustable nozzle. Use the hose with the nozzle set to a moderate spray (not too forceful, as this can damage fins) to wash down the fins from the top down.
  4. Rinse Thoroughly: Ensure you rinse away all the loosened grass, sticks, and fuzzy plant materials mentioned in the reference. Wash until the water runs clear from the bottom of the unit.
  5. Allow to Dry: Let the coil air dry before turning the power back on.

By removing this external debris, you improve airflow across the coil, which allows the unit to dissipate heat more effectively, leading to better energy efficiency and potentially extending the life of your system.

Note: This method is primarily for cleaning the exterior surface of the condenser coil from common environmental debris. Indoor evaporator coils or heavily soiled condenser coils may require different cleaning methods or professional service.

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