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The coils in an A/C system circulate very cold refrigerant in order to provide home cooling. As humid air is pulled across the coils by the air handler, water vapor in the air condenses on the cold A/C coils and drains into the drip pan. This is a normal process, which aids in the dehumidification of your home.

However, the presence of water on A/C components and the fact that A/C coils are located in dark environments mean it’s the perfect breeding ground for mold and mildew. Wet components also trap and collect dirt and debris. To help your A/C cool more efficiently and to maintain good indoor air quality, keep reading to learn how coils and A/C components should be cleaned during professional preventive maintenance.

Cleaning A/C Coils
  • First, power is shut off at the thermostat and circuit box, and the access panels to the air handler and coils are removed.
  • If your air filter is located at the air handler (or furnace), it should be replaced or cleaned.
  • The blower, blower motor, drip pan, fins and coil are inspected for dirt, debris and mold buildup.
  • All of these components are gently cleaned or vacuumed to remove light dirt and debris.
  • A special coil-cleaning solution is generously sprayed on all component surfaces and allowed to soak in for at least 30 minutes.
  • Your technician will then inspect your fins for damage. It’s important that your fins maintain even spacing for maximum airflow. A fin comb can be used to straighten any bent fins.
  • All components are wiped, brushed and/or vacuumed clean before your drip pan and drain line are chemically treated to inhibit mold, algae and bacteria growth.

Your technician will also perform several other preventive HVAC maintenance tasks, including thermostat diagnostics, electronics and relay checks, outside compressor and condenser diagnostics, refrigerant charge and many more.

For more information about cleaning A/C coils or to schedule an appointment, please contact NisAir Air Conditioning & Heating today. Our goal is to provide exceptional customer service, HVAC repairs and installations for our Martin, Palm Beach and Indian River County customers.

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