10 Common Commercial HVAC Issues

10 Common Commercial HVAC Issues

Commercial Issues can wreak havoc on your busy schedule. Your commercial HVAC system is the key to comfort in your business environment. An HVAC system breakdown can affect employee production and safety, along with customer satisfaction.  So, rely on our team of certified technicians at Big Fish HVAC/R to fix your commercial issues. We’ll have your system back up and running fast and efficiently.

Your commercial system is designed for heavy-duty use and longevity. Implementing a preventive maintenance program is critical to keeping your unit running properly for years to come. It will also reduce the likelihood of equipment failure and the need for repairs. However, just as any other piece of equipment, it will eventually need repairs performed. So, here are some of the most common commercial issues:

Lack of Maintenance

Many commercial issues can be prevented with a routine maintenance plan. Consequently, regular maintenance reduces the risk of a minor issues becoming a major repair expense. In short, having your system serviced regularly by a trained technician can prevent costly repairs.


According to ASHRAE, the life expectancy  of your commercial system is 15 years, with proper routine maintenance. However, components such as belts, bearings and motors can begin to fail over time.

Dirty Filters


Dirty filters reduce air flow. As a result, your unit will have to work harder and may overheat, reducing the life of your system. Therefore, changing the filter regularly is critical to keeping your unit running efficiently. In addition, clean filters also keep your air quality clean and free of pollutants.

Dirty Condenser Coils

Clogged or dirty evaporator coils can reduce the efficiency of your unit. As a result, your unit must work harder to do its job.  Thus, leading to increased wear on parts and even unit failure.

Odd Noises

If your system begins making strange noises, it’s time to call for help! Banging, popping or clattering noises coming from any part of the HVAC system, is a sign that your unit needs servicing as soon as possible.

Blower Running Nonstop

If you have the thermostat set to “auto” and the blower is running continuously, the fan may have malfunctioned. Therefore, your unit should be serviced.

Leaking Refrigerant

If you notice that the air coming from the vents is not very cold, your system may have a refrigerant leak. Low refrigerant levels cause the condenser to work harder. This can lead to other system issues.


A malfunctioning thermostat can cause temperature fluctuations. Loose connections or faulty wiring can often be the cause. So, if you find that the temperature in the room is not consistent with the thermostat, your thermostat setting might need adjustment.

Leaking Ducts

Do you find the one room is much colder than another? Holes or breaks in the ducts will cause the air to fill up in the walls instead of pushing the air to your vents. This causes your unit to work harder and can increase your energy bill.

Water Leak

If you notice a puddle of water around your unit, call a professional right away. The drain lines of your unit route water and condensation away from your HVAC unit. If these lines become clogged, water will back up into the drain pain causing water damage. Besides clogged drain lines, water leaks can also signal trouble with other components of the unit.

If you are experiencing any of these or any other issues with your HVAC unit, contact Big Fish HVAC/R. Our certified technicians are here to help with your HVAC problems and keep you comfortable all year long. Remember, keeping your HVAC unit on a routine maintenance plan will decrease the likelihood of costly repairs. It will also keep your system running effectively and efficiently. We will tailor a plan specifically with your business in mind. 

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