Cornerstone Mechanical, Inc. was founded by Don Franklin on October 1, 1990.

The company began with 5 employees focused on small construction and service projects.

They quickly grew and had to double their man power within a year.  This early growth was due to Mr. Franklin's focus on customer satisfaction, loyalty, and doing whatever it took to make his customers happy.  Cornerstone Mechanical is still family run and operated with Don's son, Mike Franklin, serving as president.  

Today, the business is a commercial and industrial design, installation and service operation. Our team consists of more than 30 employees, and is steadily growing.  We are thriving and expectant of Nashville's success.   

Energy Efficiency

Our energy sustainability programs are custom tailored to each client's individual needs and circumstances with a view toward long-term customer relationships based on mutual trust and satisfaction. 

Client Focused

Every Cornerstone Mechanical client receives individual attention, not a boilerplate service plan. While we've grown over the years and can now rely on the national resources of Service Logic, we haven't forgotten that our success is based on our deep local relationships and one-on-one interaction with our clients.

Team Driven

We're proud of the customer-centric team we've built over the years, made up of some of the most talented engineers, HVAC technicians and sales professionals in the mechanical services industry. In fact, most of our clients are long-term satisfied repeat customers because they trust our team to consistently be of service.

All team members are regularly trained on the latest technical and energy knowledge through our unique, industry-leading training program administered by Service Logic. Both our veterans and brand new hires are guaranteed to be professional and knowledgeable.

Technologically Sound

Our commitment to providing clients with world class HVAC solutions requires an investment in outstanding business systems. Cornerstone Mechanical has invested in a state-of-the-art service dispatch center and a customized tracking and tasking system. VoIP, Data, Accounting and CRM tools are integrated to deliver the consistent, high-quality service our customer base has grown to expect.