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Here at Frank Gay Commercial, we specialize in commercial HVAC systems and are happy to answer some frequently asked questions!

How long should my commercial HVAC system last?

HVAC systems are usually measured in cycles, not years. The number of cycles depends on climate, proper installation, and usage demands. A commercial HVAC system will last around 15 to 20 years. The life of your system could be extended by as much a 33% with proper maintenance.

How often should maintenance be performed?

Speaking of maintenance, Frank Gay Commercial recommends that your unit should undergo preventative maintenance at least twice a year. The age and size of your building and unit may influence how often service should be done. Here at Frank Gay Commercial, we have an operation checklist to ensure the protection of your system. If you are unsure about how often your unit should be serviced, give us a call!

How often should I change my air filter?

Keeping your air filter clean is essential for having good indoor air quality inside your commercial space. Good indoor air quality means less pathogens and dust will be in your building, keeping your employees and customers healthy. Filters should be checked monthly and replaced when dirty. (This also extends the life of your blower motor)

Is there a difference between commercial and residential HVAC systems?

Yes! It is easiest to think of four primary differences:

  • First, commercial units can be much larger. This will depend on the amount of space that needs to be cooled.
  • Second, commercial units are placed in different locations on (top of) the property.
  • Third, the demand on commercial systems is far more complex. This is due to more subdivided space with different heating and cooling needs.
  • Fourth, commercial units have more complex functions. The staging and controls are more complex, they can come in different system variations. For all these reasons, we recommend seasonal maintenance be performed by experienced Commercial HVAC technicians.

What should I look for in a commercial HVAC service provider?

It is always best to entrust a provider with decades of experience working with commercial HVAC units. At Frank Gay Commercial, we have over 40 years of experience and provide safe, quality service. We will give your company the long-term solution over a band-aid repair by providing operational reports after preventative maintenance is performed. Our uniformed technicians are available 24/7 to arrive with a can-do attitude, ready to meet your needs!

Frank Gay Commercial’s Core Values

At Frank Gay Commercial Services, LLC, we seek to be the gold standard in our trades and to be the backbone of our community. We know you have other options, but we make sure that if you use us once, you’ll be a customer for life!

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Frank Gay Commercial Services, LLC prioritizes effective communication with clients, employees, and stakeholders to ensure clear understanding and alignment of goals and objectives.


We are a company that upholds integrity by maintaining strong moral principles, honesty, and trustworthiness in its business practices.


Frank Gay Commercial Services, LLC is committed to being an active member of the community by supporting local initiatives, organizations, and events to create a positive impact and build lasting relationships.


We strive for continuous growth by embracing innovation, investing in employee development, and pursuing new opportunities to improve the quality of its services and expand its reach.


Frank Gay Commercial Services, LLC brings a high level of energy to its work, consistently delivering quality services with enthusiasm, passion, and a can-do attitude.

Customer Reviews
Justin Collins

Michael Gilbert was very knowledgeable and helpful with the repair process. He also made recommendations for repairs that we didn’t know were issues until he showed us the problems. He provided us pricing for the repairs itemized and combined. He is an all around good guy to talk to while he was getting the job done. In the end everything came out just right. Thanks Michael take care!

Sienna Wheeler

I used Frank Gay for electrical services. I wanted to have my outdated light fixture upgraded to something more modern and classy. My technician was Mario and he was incredible! Very fast and efficient service. He was also very friendly and knowledgeable. I highly recommend this company!

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