In the course of an HVAC lifespan, it's important that proper cleaning methods are undertaken to maintain quality and airflow standards. Many companies don't necessarily have a routine cleaning procedure or simply don't follow through with their original commitments to higher HVAC performance. In the end, without timely intervention, the system as a whole suffers, and, in turn, fatal breakdowns can occur.

The problem with HVAC coils is that they are protected behind a series of assembled parts, including fins, casings and panels. This means it's not always readily visible to see if coils are dirty and in need of a cleaning. Plus, most people are not trained to identify a problem on sight. Though it's necessary to remove all external coverings to access the HVAC coils, there should be pertinent warning signs already present that provide an actionable reason to clean the coils in the first place.

Here are a few indications that your HVAC coils may be due for a cleaning:

Slower function
If you adjust the temperature setting on your HVAC unit and it takes longer than usual to reach that desired setting, then there may be a larger problem occurring inside the unit. This could be due to the fact that the coils are obstructed with buildup. In this case, any additional particles that reside inside the coils will collect over time and actually prevent the necessary flow of liquids, gases and refrigerants. Further, when combined with water and chemicals, these small particles can stick to the coils because of their metal makeup.

This essentially creates a dam within the coils, blocking passageways. When this occurs, the unit itself will have to work harder to make up for the blockages, which may cause it to function more slowly. Though the HVAC system may still work in some capacity, it will be less efficient and not optimized to operate at its original speed.

Reduced air quality
You may notice the air within a confined space isn't up to par. This is extremely important to note when concerning cleanrooms, chemical plants and other heavy-duty industrial settings where air quality needs to be strictly regulated at all times. For instance, if the level of air quality is reduced by a small percentage, products can be contaminated and workers can be put at risk.

It's vital to remember that any pollutant that makes it's way inside of a building has the potential to negatively react with certain products, solutions and chemicals indoors. This can delay entire production processes and cause you to have to shut down business until the HVAC system is overhauled.

The problem could stem from biological pollutants like mold settling inside coils. Additionally, excess water can collect and puddle, creating the conditions for air contamination to occur. If your building controls and sensors recognize a decline in air quality, then coils may be the culprit.

Higher costs
Because low-performing coils make the unit operate at a lower level, energy costs will likely rise as the HVAC system tries to exert more power to make up for the inefficiency. The problem is it can take months before you notice variations in your monthly utility bills. Luckily, many newer systems are equipped with analytics that allow you to identify where the additional expenses are coming from.

HVAC units make up nearly half of a building's total electricity consumption, so even a minor problem can be a huge financial detriment. Even coils that are coated can still become subjected to corrosion or cases of buildup if the coatings were not applied properly or allowed to dry. That's why it's crucial that a watchful eye is kept on the the condition of HVAC coils at all times.

Once coils are inspected, you'll likely see solid particles and grains residing inside of them. Further, mold, dark stains and dirty water may be present as well. This is a result of months of use without a proper cleaning.

Rahn Industries can help keep coils in top shape by offering the highest-quality products on the market, including coal coating services. If you detect a problem with your HVAC system, contact Rahn for help.

Rahn Industries has a full lineup of spray and immersion (dip)/ Bake protective coatings to meet your needs.