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Commercial HVAC Systems and Equipment We Service

Interstate AC installs, services, and supports the full range of commercial and industrial HVAC equipment. Select a system below to learn more about our capabilities.

One Contractor for the Whole Mechanical Room

Most commercial buildings run a mix of equipment accumulated over decades of phased replacements, tenant buildouts, and ownership changes. A chiller from one era, rooftop units from another, and a controls system that was never fully integrated with either.
Managing that mix through multiple specialty contractors creates gaps. Interstate AC covers the full equipment range, across every major manufacturer, which means one relationship, one dispatch number, and one service history for the entire building.

Air Handling and Distribution

Air distribution determines whether the rest of the system can do its job. Leaking ductwork, undersized returns, and improper filter selection undercut even well-maintained equipment.

Cooling Equipment

Nashville summers push cooling equipment to sustained peak load. Capacity, staging, and humidity control all matter more here than the nameplate efficiency rating suggests.

Heating Equipment

Middle Tennessee winters are variable rather than severe, which means heating equipment often sits idle long enough to hide developing problems until the first hard freeze.

Specialty and Process Equipment

Refrigeration and humidity control carry direct operational consequences. A refrigeration failure at a restaurant is an inventory loss. A humidity excursion at a medical facility is a compliance issue.

Controls and Building Automation

Interstate AC supports HVAC controls integration. Automated controls adjust heating and cooling based on occupancy, schedule, and conditions, which reduces energy consumption while improving comfort. For facility teams managing multiple buildings, remote monitoring and alerting turn a reactive operation into a proactive one.

Every Brand on the Market

We service virtually every commercial and industrial manufacturer, including Carrier, Trane, York, Lennox, Mitsubishi, American Standard, and Bradford White, along with legacy equipment many contractors will not touch. Age and brand do not determine whether we can help.

Whatever the equipment, the service model is the same: preventative maintenance to keep it running, responsive repair when something fails, and planned replacement when it reaches end of life.

Frequently Asked Questions

Do you service equipment from manufacturers you do not sell?

Yes. We are not tied to a single manufacturer. Our technicians work across every major commercial brand and system type.

Can you support older or discontinued equipment?

In most cases, yes. We regularly service legacy equipment and can advise when parts availability has made continued repair impractical.

Do you handle building automation and controls?

Yes. Interstate AC supports controls integration. For advanced upgrades, service and full building takeovers, we partner with Open Source Controls, located in Nashville, TN.

Which system is right for my facility?

That depends on building size, load profile, occupancy patterns, and budget. Our team assesses the building and recommends a configuration rather than defaulting to whatever is already installed.

Not Sure What You Are Working With?

Our team can inventory your equipment, assess condition, and recommend a path forward. Contact us or call (615) 802-2665.