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Nashville’s Commercial HVAC and Plumbing Partner

For over 20 years, Interstate AC has kept Middle Tennessee’s commercial and industrial facilities running. We are the mechanical contractor property managers, facility directors, and general contractors call when they need the work done right.

Our Mission: Serving Nashville’s Commercial Sector

Twenty years ago, we saw a need for a HVAC and plumbing partner focused on commercial and industrial facilities in Nashville. Setting out to fill that gap, we built a company focused on serving fellow Middle Tennessee businesses.

That focus has not changed. We work exclusively with commercial and industrial clients, which means our technicians spend their days working on rooftop units, chillers, boilers, and commercial plumbing infrastructure rather than splitting time across residential calls. The depth that produces is the difference between a technician who is trained on your specific equipment before and one who is learning about it while working on your building.

At Interstate AC, we treat your HVAC and plumbing systems like they are our own. Because we are not here for a one-off job, we are here to build lasting partnerships. Our reputation is built on showing up when it counts, solving problems with care, and keeping your business operations running smoothly for years to come.

What We Do

Most commercial facilities need three different mechanical relationships: someone to maintain the systems, someone to fix them with urgency when they fail, and someone to build them when the building changes. We handle all three, across both trades.

Commercial HVAC

Our commercial HVAC team covers preventative maintenance, service and repair, equipment replacement, and full system installation. We service virtually every brand and system type on the market, from packaged rooftop units and split systems to chillers, boilers, VRF, and industrial process equipment. We support  building automation and controls integration across mechanical systems.

Commercial Plumbing

Our commercial plumbing team handles drain cleaning and hydro jetting, water heater installation and service, backflow prevention and compliance testing, grease traps and interceptors, gas fitting, water treatment, pipe fitting and fabrication, and emergency leak and line repair. Licensed plumbers, commercial scope, including projects that require crane support.

Commercial Construction

Our construction team partners with general contractors, developers, and building owners on ground-up projects, tenant improvements, and building retrofits. We deliver both design-build and plan-and-spec, with mechanical and plumbing scope under one contract. After 20 years in Nashville’s subcontracting network, most of our project work comes from contractors we have built with before.

Preventative Maintenance Agreements

For facilities that want both trades on one contract, our ongoing preventative maintenance agreements combine scheduled maintenance across HVAC and plumbing with documented reporting, priority dispatch, and reduced overtime rates. One vendor, one account manager, one dispatch team, and one service history for the whole building.

When Something Fails at 2 AM

Mechanical failures do not respect business hours, and the cost of one climbs with every hour it goes unaddressed.

Interstate AC provides 24/7 emergency service across our full coverage area. Calls are answered with urgency, and our vehicles carry a comprehensive parts inventory so most emergency repairs are completed during the first visit. Because we cover every major brand, we will never decline the call because of whose logo is on the equipment.

That is the capability most clients evaluate us on before they ever need it, and the one they remember afterward.

What Matters Most

Our People

At the core of our company, we believe that success comes from the incredible people who make it all happen. Our team is more than just a group of employees, they are a unit that values both doing the hard work and enjoying what they do. We take pride in the passion and integrity each member brings to their role, and as a company we work tirelessly to preserve the culture that has guided us over the past twenty years.

That team includes licensed HVAC technicians, master plumbers, commercial account managers, and construction project managers. Investing in them is not a values statement, it is how we keep the people who already know your building. Join our team.

Our Commitment

Interstate AC is built on strong, lasting relationships with our customers. Our commercial account managers and construction project managers go beyond account handling. They are trusted partners dedicated to understanding your facility’s needs and collaborating with you to determine the best course of action. Backed by a skilled team of technicians, mechanics, and plumbers, we make sure every job is done right the first time.

Our Safety Culture

Safety is more than a priority, it is part of how we operate. Our team champions a proactive, transparent approach to safety that is embedded across the entire company. For customers, that shows up as fewer incidents, cleaner job sites, and crews who can work in your building without creating exposure for you.

Why Middle Tennessee Businesses Choose Interstate AC

Twenty years in this market
We have worked through Nashville’s rapid growth, and we know how local buildings age, what the climate does to equipment, and how permitting and inspection work across Middle Tennessee jurisdictions.
Commercial and industrial only.
We are not a residential company taking commercial work on the side. Every technician, truck, and process is built for large-scale systems. We understand what businesses need and what it can cost them to be down.
Every brand on the market
We can service Carrier, Trane, York, Lennox, Mitsubishi, American Standard, Bradford White, and legacy equipment that other contractors have to decline. A mixed-vendor building does not require multiple contracts.
Both trades, one contractor
Mechanical and plumbing under one relationship eliminates the coordination gap where problems usually live.
Service and construction together
We build systems and we maintain them, which shapes how we install: accessible equipment, documented systems, and configurations a technician can still work on in year eight.
Local partnership, local accountability
Our office is on Air Lane Drive. Our leadership is here. When something goes wrong, the decision-maker is in the same city as your building.

Trusted Across Middle Tennessee

Our reputation comes from the businesses and general contractors who keep calling us back. Explore what customers say in our testimonials, and see how we have solved complex mechanical problems for commercial and industrial facilities in our case studies.

We serve a full range of commercial environments across Middle Tennessee and Southern Kentucky, including property management portfolios, medical facilities, industrial facilities, data centers, restaurants, office buildings, schools, warehouses, retail spaces, and religious institutions.

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Associations and Affiliations

Interstate AC maintains active membership and certification with industry organizations that set the standards for  mechanical work and commercial real estate in Middle Tennessee, including IFMA, BOMA, ABC, NAWIC, and PHCC.

We prioritize continuing education through our NCCER-accredited education program for both the HVACR and plumbing trades. We are also ISN certified and a member of the Avetta Network. These are not logos on a page. They represent training standards our technicians are held to, safety programs we participate in, and a commitment to the trades that keeps qualified people entering this industry.

Areas We Serve

Interstate AC serves Nashville, Middle Tennessee, and Southern Kentucky, from Davidson County out through Williamson, Rutherford, Sumner, Robertson, Cheatham, Dickson, and Maury Counties, and north into Bowling Green and Hopkinsville. See the full list on our areas we serve page.

A Trusted Partner for Your Business

Whether you need a maintenance program, an emergency response, or a mechanical partner on your next project, our team is ready. Contact us or call (615) 802-2665.