Business Details
44 Years
experience
Emergency
services
Commercial HVAC & Plumbing Solutions in Knoxville
Since 1982, Interstate Mechanical has established itself as a trusted leader in commercial and industrial mechanical services. Our dual entities, Interstate Mechanical, Inc. and Interstate Mechanical Service, LLC, provide comprehensive solutions spanning design, construction, maintenance, and emergency repairs. With over 150 employees and a LEED-certified facility, we combine cutting-edge technology with time-tested expertise to deliver HVAC, plumbing, and specialized mechanical systems. Our in-house fabrication shops ensure precision and efficiency, while our preventive maintenance programs reduce operational costs for clients.Rooted in family ownership, we maintain a culture of integrity, safety, and innovation, serving East Tennessee and beyond. Decades of experience with projects ranging from $1,000 to $10 million underscore our adaptability and commitment to quality. Our partnerships with industry leaders and recognition by bonding agencies like Travelers Casualty reflect our reliability. From iconic landmarks like the Women's Basketball Hall of Fame to modern healthcare facilities, we consistently exceed expectations through personalized service and technical excellence.
Services
HVAC Installation
Plumbing Systems
Preventive Maintenance
Special Projects
In-House Fabrication
Details
- Year established: 1982
Highlights and features
- 34+ years of experience serving East Tennessee's mechanical contracting needs
- In-house fabrication shops for piping and sheet metal ensure precision and efficiency
- 24/7 emergency service with rapid response technicians available
- Customized preventive maintenance programs reduce operational costs by up to 30%
- 150+ skilled professionals with expertise in projects from $1,000 to $10M
What people say
Best of the Best
Great quality of work
Experienced and professional
Commitment to safety
Deliver high quality work
Services
HVAC Installation
We design and install complete commercial HVAC systems for new construction and renovation projects. Our certified technicians handle all system types and brands, ensuring optimal climate control and energy efficiency. With in-house engineering support, we deliver tailored solutions that meet exact facility requirements while adhering to strict timelines and budgets.
Plumbing Systems
Our comprehensive plumbing services cover design, installation, and maintenance of industrial and commercial water systems. From complex medical gas piping to large-scale facility upgrades, we ensure code compliance and long-term reliability. Specialized expertise includes high-rise buildings and healthcare facility requirements with minimal operational disruption.
Preventive Maintenance
Customized maintenance plans extend equipment lifespan while reducing operational costs by up to 30%. Our technicians perform regular inspections, system diagnostics, and proactive repairs using advanced monitoring technology. Clients receive detailed condition reports and priority emergency response as part of our comprehensive service agreements.
Special Projects
Fast-track solutions for critical mechanical issues with budgets ranging from $1,000 to $100,000. Our dedicated team handles weekend shutdowns and time-sensitive repairs including HVAC replacements, ductwork corrections, and gas piping modifications. Rapid mobilization ensures minimal downtime for commercial operations.
In-House Fabrication
Precision sheet metal and piping fabrication using state-of-the-art equipment. Our controlled environment reduces weather delays and quality risks while enabling just-in-time delivery. Services include custom ductwork, structural beams, and specialized components for complex mechanical systems with exacting specifications.
People
Terry Self
Owner
Terry Self leads Interstate Mechanical as owner, continuing the legacy of excellence established in 1982. With over two decades of leadership experience, he oversees operations while maintaining the company's founding principles of integrity and quality. Terry ensures strategic growth while preserving the family-owned business culture.
Robin Self
Owner
Robin Self co-owns Interstate Mechanical with Terry Self, contributing to strategic decision-making and business development. As part of the family ownership transition in 2003, she helps maintain the company's commitment to personalized service and technical excellence across all projects.
Brent Smartt
Project Manager
Brent Smartt serves as Special Projects Project Manager, overseeing fast-track mechanical solutions with budgets up to $100,000. His expertise in urgent repairs and weekend shutdown projects ensures minimal operational disruption for commercial clients while maintaining strict quality standards.
Tracy Moretz
Senior Project Manager
Tracy Moretz manages complex mechanical projects as Senior Project Manager, bringing extensive experience in commercial construction and system upgrades. She coordinates multidisciplinary teams to deliver solutions that meet technical specifications while adhering to project timelines and budget constraints.
Questions
What services does Interstate Mechanical offer?
We provide full mechanical services including HVAC installation, plumbing systems, preventive maintenance, special projects, and in-house fabrication for commercial and industrial clients.
Do you offer emergency repair services?
Yes, our 24/7 service department handles emergency HVAC and plumbing repairs with rapid response technicians available at (865) 602-4128.
What areas do you serve?
We primarily serve Knoxville and all of East Tennessee, with experience handling projects across the region since 1982.
How can I request a service?
Contact us at (865) 588-0180 during business hours or use our 24/7 service line at (865) 602-4128 for urgent requests through our online form.
What makes your company different?
Our in-house fabrication shops, 34+ years of local experience, and 150+ skilled professionals enable efficient, high-quality solutions from design through maintenance.
Do you handle large-scale projects?
Yes, we manage projects ranging from $1,000 to $10 million, including complex institutional and industrial mechanical systems with specialized requirements.
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