Six Common Symptoms of A Dirty Evaporator Coil

In the heart of your AC system lies a critical component known as the evaporator coil. This coil's primary function is to absorb heat from the air inside your home, thus cooling it. However, over time, dust and other airborne particles can accumulate on this coil, reducing its effectiveness. 

With our unique climate conditions, can attest to the necessity of maintaining a clean evaporator coil. But how can you tell when your coil needs cleaning? Here are six symptoms to look out for.

1. Reduced Cooling Performance

The first sign of a dirty evaporator coil is a noticeable decrease in cooling performance. A dust-coated coil cannot absorb heat as efficiently as a clean one. As a result, your AC may struggle to bring your home to the desired temperature, leaving you with a warm, uncomfortable indoor environment despite the AC running at full blast.

2. Increased Energy Consumption 

A dirty coil can lead to higher energy bills, and here's why:

• An Overworked System: When dirt restricts the heat absorption process, the AC has to run longer and work harder to achieve the same cooling effect, leading to increased energy consumption.
• Reduced Cooling Capacity: The extra layer of dust on the coil acts as an insulator, reducing the coil's ability to absorb heat and cool the air. This necessitates the AC to run longer to meet the set temperature, again leading to higher energy usage.
• System Trying to Maintain Refrigerant Pressure: The dust accumulation can affect the refrigerant's evaporation in the coil, causing the system to exert more effort to maintain the correct pressure. This extra effort translates to more energy consumption.

3. Frequent System Cycling 

If your AC turns on and off more frequently than usual, it might be a sign of a dirty evaporator coil. When the coil's effectiveness is compromised, the system might reach the thermostat set-point prematurely and turn off, only to turn on again when the temperature rises.

4. Ice Formation on the Coil 

A thick layer of dust on the evaporator coil can impede airflow, causing the coil's temperature to drop below freezing. When the humidity in the air comes in contact with the overly cold coil, it can freeze and form ice on the coil - a clear indication of a dirty evaporator coil.

5. Unpleasant Odors 

A dirty evaporator coil can be the source of unpleasant odors emanating from your AC. This happens due to:

• Mold and Odor-Causing Bacteria: The damp environment in the AC system, coupled with the dust layer on the coil, can provide an ideal breeding ground for mold and bacteria, leading to musty odors.
• Build-Up and Decay of Organic Matter: Organic matter like pollen and pet dander can accumulate and decay on the coil over time, causing unpleasant smells.
• Volatile Organic Compounds (VOCs): Some dust particles can release VOCs when heated, resulting in a chemical smell when the AC is running.

6. Increased Dust and Allergies

A dusty evaporator coil can be a source of indoor air quality issues. The dust from the coil can be circulated throughout your home, leading to increased dust levels and aggravating allergies in susceptible individuals.

Does Your AC Unit Need Cleaning?

If your AC exhibits any of the symptoms above, it might be time for a professional coil cleaning. At Best Owner Direct, we provide top-notch AC maintenance services to ensure your system runs at peak performance. 

Our team of experts serves the Washington County and surrounding areas, bringing professional HVAC solutions right to your doorstep.

Don't let a dirty coil compromise your comfort. Contact Best Owner Direct today for expert AC maintenance and enjoy a cooler, cleaner home!