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  • Writer's pictureKrystal Morrell

Signs Your Commercial HVAC Coil Needs Replacement

Updated: Jul 28, 2023

HVAC technician works on commercial roof top machine

Commercial HVAC coils play a vital role in maintaining comfortable indoor temperatures for businesses and industries. These coils are responsible for heat transfer and are found in air conditioning units, refrigeration systems, and heat pumps. Over time, due to constant use and exposure to various elements, HVAC coils can wear out and become less efficient. Recognizing the signs that your commercial HVAC coil needs replacement is crucial to prevent system breakdowns and ensure optimal performance. In this article, we will discuss the key indicators that signal it's time to replace your commercial HVAC coil, helping you make informed decisions when purchasing replacement coils from our website.

1. Reduced Cooling or Heating Capacity

One of the first signs that your commercial HVAC coil may need replacement is a noticeable reduction in cooling or heating capacity. If you find that the indoor temperature is no longer as comfortable as it used to be, despite the system running continuously, the coil may be losing its efficiency. Over time, dirt, debris, and corrosion can accumulate on the coil's surface, hindering the heat transfer process and decreasing the system's overall efficiency.

2. Increased Energy Bills

A decline in HVAC system efficiency often leads to higher energy bills. If you notice a sudden spike in energy costs without a corresponding increase in usage, it could be a strong indication that your commercial HVAC coil is in need of replacement. When coils become inefficient, the system must work harder and consume more energy to achieve the desired temperature, resulting in increased operating costs.

3. Frequent System Breakdowns

If your commercial HVAC system is experiencing frequent breakdowns or requires constant repairs, the coil may be to blame. As coils deteriorate, they struggle to handle the heat transfer process efficiently, causing the system to overheat and leading to breakdowns. Replacing the coil before it causes further damage to the entire system can save you from costly repairs and downtime.

4. Visible Corrosion or Physical Damage

A visual inspection of the HVAC coil can reveal significant clues about its condition. Look for signs of corrosion, such as rust or greenish discoloration, as this can weaken the coil's structure and lead to leaks. Additionally, physical damage, such as bent fins or dents, can disrupt airflow and impair the coil's performance. If you notice any of these signs during routine maintenance, it may be time to consider a replacement.

5. Persistent Icing or Frost Formation

HVAC coils are designed to handle condensation and moisture effectively. However, if you notice persistent icing or frost formation on the coil's surface, it could indicate a problem. A deteriorating coil may struggle to remove excess moisture from the air, leading to frost accumulation. Ignoring this issue can cause further damage and decrease system efficiency.

6. Unpleasant Odors or Poor Indoor Air Quality

An aging or malfunctioning HVAC coil can foster the growth of mold and bacteria due to the presence of excess moisture. As a result, you may notice unpleasant odors in the indoor air or a decline in indoor air quality. Poor air quality can negatively impact the health and productivity of occupants, making coil replacement essential for maintaining a healthy work environment.

7. Age of the Coil

Consider the age of your commercial HVAC coil when evaluating its condition. Most coils have a lifespan of 10 to 15 years, depending on usage and maintenance. If your coil is approaching or has exceeded this timeframe, it's advisable to consider a replacement, even if you haven't noticed any apparent issues yet. Proactive replacement can prevent unexpected breakdowns and disruptions to your business operations.


Commercial HVAC coils are integral components that require regular inspection and maintenance to ensure optimal system performance. Recognizing the signs that your coil needs replacement can save you from costly repairs, higher energy bills, and potential system breakdowns. If you notice reduced cooling or heating capacity, increased energy costs, frequent system breakdowns, visible corrosion or physical damage, persistent icing, unpleasant odors, or an aging coil, it's time to consider investing in a new commercial HVAC coil. At Re-Coil Solutions we offer a wide range of high-quality commercial HVAC coils to meet your specific needs and keep your business running smoothly with reliable and efficient HVAC systems. Custom coils are our speciality. Don't wait for your HVAC coil to fail—take proactive steps to replace it and ensure the comfort and well-being of your occupants and employees.

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Christian Wright
Christian Wright
19 avr.
Noté 5 étoiles sur 5.

I was hesitant about the cost of replacing our HVAC coils, but after seeing the difference it made in our system's performance, I have no regrets. The HVAC Contractor Sunrise company provided top-notch service and ensured everything was done correctly the first time.

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