5 Signs of Dirty Air Conditioning Coils

Air conditioners rely on various components to provide effective cooling, with the evaporator and condenser coils being among the most crucial. When these coils accumulate dirt, the system’s efficiency can drop significantly, leading to inadequate cooling performance.

Drawing on decades of expertise, we’ll highlight the key signs that your AC coils are dirty. By recognizing these warning signs, you can promptly arrange for cleaning services, helping to maintain efficiency and ensure your home stays cool.

Top Signs Your Air Conditioner Coils Need to Be Cleaned

Here are the top signs to look out for when your AC coils are dirty:

1. Reduced Cooling Output

One of the most identifiable signs is a reduced cooling output from the air conditioner. If you notice your home isn’t being properly cooled or only warm air is coming out of the vents, dirty AC coils could be the reason.

As dirt and debris begin to accumulate on the air conditioner’s coils, a layer of insulation is created that prevents the coils from absorbing heat from the air indoors. This occurrence can also restrict air passages, reducing the amount of air that is supposed to come into contact with the coils.

The consequences of these issues are:

• Lower cooling performance
• Reduced air circulation
• Diminished cooling capacity of the AC system
• Higher monthly utility bills

2. Increased Energy Consumption

When AC coils are dirty, they can cause your HVAC system to work harder than usual. This increased workload makes it harder for the system to maintain desired temperatures and increases energy consumption.

Dirty coils in HVAC systems hinder heat absorption and transfer, driving up energy consumption. This can also make it difficult for the system to maintain refrigerant pressure, another reason for increased energy consumption.

If you notice an unexpected rise in your energy bills and cannot determine the cause, dirty AC coils could be the culprit.

3. Frequent Cycling

Have you noticed that your HVAC system is turning on and off more than usual? Dirty AC coils could be responsible for that troublesome, frequent cycling.

Pressure and temperature can vary across dirty evaporator coils, causing increased intervals of cycling as the system struggles to compensate. This system inefficiency only leads to more issues.

4. Ice Formation on the Coils

One of the more puzzling signs is ice formation. Since your AC’s dirty coils can’t properly absorb heat from the air, the drop in temperature can plummet to below freezing. The moisture in the air then freezes on the coil surface, potentially forming ice. Not only does this hinder system efficiency, but coil damage is also possible.

5. Strange Odors

Are you starting to notice foul odors coming from your HVAC system?

Moisture around the coils creates the perfect environment for mold and mildew growth. Once present, mold and mildew can emit rotten or musty smells, seriously affecting indoor air quality and the health of the home’s occupants.

Another possibility is volatile organic compounds, or VOCs. VOCs are chemicals from sources like cleaning products, furnishings, and paints that can accumulate on the AC’s coils. When VOCs are heated, they give off an unpleasant odor and can potentially create health hazards in your indoor living spaces.

AC Coil Types

Central air conditioning systems have an indoor and outdoor unit, each with its own coil:

• The indoor unit houses the evaporator coil, which absorbs heat from the inside air.
• The outdoor unit houses the condenser coil, which releases captured heat outside.

Why Is It Important to Clean AC Coils?

Cleaning the dirty coils in HVAC systems is crucial because of the moisture generated during the cooling process and the air that flows over them. Dirt, dust, debris, and various pollutants from the air can quickly accumulate on the coils. Without regular cleaning, heat transfer becomes impaired, leading to ineffective cooling throughout the home.

By regularly cleaning your AC’s dirty coils, you ensure that the system runs efficiently, delivers the desired cooling, and reduces the risk of the mentioned issues occurring.

How Often Should AC Coils Be Cleaned?

Clean your AC coils at least once a year. If they get dirty easily, more frequent cleanings may be needed.

Schedule a professional cleaning service with the professionals from our HVAC company once a year before the summer so your home is properly prepared for the cooling season.

Professional Air Conditioning Repair Services

If your AC coils need to be cleaned, contact our staff at (864) 256-0643 to receive assistance. Our team members offer reputable air conditioning repair services in Greenville, South Carolina and have the tools necessary to remove excess dirt or debris in your HVAC system.

Our professionals also offer extensive air conditioning replacement and air conditioning maintenance services for homeowners and will work with you to keep your living space cool throughout the warm season.

Don’t let yourself struggle through the summer heat without proper cooling. Contact our team today for support.