Interstate Mechanical Contractors, Inc.

Commercial Mechanical Contracting Servicesinterstatemechanical.com

Interstate Mechanical Contractors is a family-owned Knoxville, Tennessee mechanical contracting firm providing commercial HVAC, plumbing, pipe and sheet metal fabrication, 24/7 service, and preventive maintenance to institutions, healthcare, manufacturing, and commercial facilities across East Tennessee, Kentucky, and North Carolina.

Company typePrivate
Founded1982
HeadquartersKnoxville, United States
Headcount101–250
GTM typeB2B
OfferingServices

What Interstate Mechanical Contractors, Inc. does

Interstate Mechanical Contractors, Inc. (IMC) is a family-owned mechanical contracting firm founded in 1982 in Knoxville, Tennessee. The company provides full mechanical construction services — HVAC, plumbing, piping, millwright, and site utilities — for commercial and industrial facilities across East Tennessee, with additional licensure in Kentucky and North Carolina. IMC performs 92% of its work in-house, supported by vertically integrated pipe and sheet metal fabrication shops operating since the late 1980s, equipped with Duct-o-matic coil lines, computer-driven plasma-arc cutting, and orbital welding capabilities plus 3D CAD/BIM coordination.

Revenue is generated across four primary streams: large commercial construction projects ($500 to $10 million, with the majority of work falling in the $20,000-$350,000 range), smaller Special Projects ($1,000-$100,000), 24/7 commercial service and repair, and subscription-based preventive maintenance programs that reportedly reduce facility operating costs by 10-15%. Projects target institutions, schools, government, healthcare, manufacturing, churches, hotels, office, and retail facilities. In 2016, the service division was spun off into a separate subsidiary, Interstate Mechanical Service, LLC (IMS), which delivers 24/7 HVAC, plumbing, controls, and energy conservation services under a Siemens Certified Solution Partner arrangement. Proprietary offerings include Discovery Sound Technology (DST), a cloud-based predictive diagnostic platform exclusive to East Tennessee.

The company is led by Terry Self (Chairman and CEO, with the firm since 1983) and Robin Self (Corporate Secretary and co-owner since 2003 acquisition); Bradley Self serves as President. Headcount stands at 150+ employees across both entities, supported by an apprenticeship program and long-tenured staff in skilled trades. Average annual revenue is approximately $32 million.

Interstate Mechanical Contractors, Inc. firmographics

Firmographics

Name: Interstate Mechanical Contractors, Inc.
Legal name: Interstate Mechanical Contractors, Inc.
Website: https://interstatemechanical.com
Company type: Private
Founded year: 1982
Operating status: Operating
Headcount range: 101–250 employees
Short description: Interstate Mechanical Contractors is a family-owned Knoxville, Tennessee mechanical contracting firm providing commercial HVAC, plumbing, pipe and sheet metal fabrication, 24/7 service, and preventive maintenance to institutions, healthcare, manufacturing, and commercial facilities across East Tennessee, Kentucky, and North Carolina.
Ownership category
akta.pro rank

Interstate Mechanical Contractors, Inc. industry classification

Industry

Product category: Commercial Mechanical Contracting Services
NAICS: Plumbing, Heating, and Air-Conditioning Contractors (238220)
SIC: Construction - Special Trade Contractors (1700)
akta.pro primary industry: HVAC & Refrigeration Contracting (IMAFALAB)
akta.pro secondary industries: Plumbing & Pipefitting Contracting (IMAFALAC), Industrial/Process Piping & Mechanical Contracting (IMAFALAG)

Keywords

Commercial mechanical contracting
Commercial HVAC services
Plumbing construction
Sheet metal fabrication
Preventive maintenance

Where Interstate Mechanical Contractors, Inc. is headquartered

Location

Headquarters

HQ city: Knoxville
HQ country: United States
HQ region: North America

Offices3 records

Markets served

Interstate Mechanical Contractors, Inc. business model

Business model

GTM type: B2B
Offering type: Services
Cost components: Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales

Revenue model

Special Projects: Smaller, faster projects typically ranging from $1,000 to $100,000 with quick turnaround times. Fully-manned with field crew accustomed to fast-paced and quick lead times.
Commercial Construction Services: Full mechanical construction including HVAC, Millwright, and Site Utilities for commercial and industrial facilities. Projects range from $500 to $10 million.
Preventive Maintenance Programs: Customized maintenance programs to reduce facility costs with energy savings assessments and regular diagnostic analyses.
24/7 Emergency Service & Repair: Commercial service and repair for all types, brands and sizes of HVAC and plumbing units and systems available 24/7.

Pricing tiers

Model	Billing	Price
One time/ perpetual license	Pay-as-you-go	Small Projects
One time/ perpetual license	Multi-year contract	Commercial Construction
Subscription	Annual	Preventive Maintenance Programs

Go-to-market motion2 records

Distribution channels2 records

Marketing channels7 records

Interstate Mechanical Contractors, Inc. product offering

Product offering

Core offering

Interstate Mechanical Contractors is a commercial mechanical contractor that self-performs HVAC, plumbing, and mechanical system installation for new construction and renovation projects. The firm also operates an in-house sheet metal and pipe fabrication shop and runs a service subsidiary (IMS) that delivers preventive maintenance, building automation, controls, energy conservation, and 24/7 emergency repair to existing facilities.

Product overview

Interstate Mechanical Contractors, Inc. is a family-owned mechanical contractor operating two companies: Interstate Mechanical Contractors (IMC) and Interstate Mechanical Service, LLC (IMS). IMC provides mechanical construction services ranging from custom design to full maintenance and repair, including Commercial Construction, Plumbing Services, HVAC Services, In-House Sheet Metal Fabrication, In-House Pipe Fabrication, Preventive Maintenance Programs, and Special Projects. IMS, the service subsidiary, offers 24/7 Commercial HVAC, Commercial Plumbing, Energy Conservation Services, and Controls & Building Automation. The company serves commercial and industrial facilities in East Tennessee including manufacturing plants, healthcare facilities, worship centers, schools, hotels, and retail establishments.

Differentiator

Problem solved

Functional benefit

Products and services

Commercial Mechanical Construction

Quantifiable outcome

Reduce energy costs 10-15 percent through proper preventive maintenance
+2 more outcomes

Companies that use Interstate Mechanical Contractors, Inc.

Customer profile

Named customers4 records

Segments4 records

Ideal customer profiles1 record

Interstate Mechanical Contractors, Inc. technology and API

Technology

Technology focussed No

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

Feature3 records

Interstate Mechanical Contractors, Inc. partnerships and signals

Strategic signal

Partnerships

Twelve partnerships are on record, tiered minor and core.

PHCC (Plumbing- Heating Cooling Contractors Association)minorOthersProfessional trade association for plumbing and HVAC contractors providing industry standards, training, and advocacy.
CFMA (Construction Financial Management Association)minorOthersAssociation focused on construction financial management providing resources and networking for financial professionals.
AGC (The Associated General Contractors of America)minorOthersMajor construction industry association representing general contractors and providing advocacy, training, and networking.
Synergy Solution GroupcoreStrategic or Co-development PartnerStrategic partnership group for mechanical contractors providing collective resources and purchasing power.
ASHRAEminorOthersProfessional society for HVAC industry providing standards, research, and continuing education.
Knoxville Chamber of CommerceminorOthersLocal chamber of commerce providing networking and business development opportunities in the Knoxville area.
Oak Ridge Chamber of CommerceminorOthersRegional chamber of commerce serving the Oak Ridge business community.
BOMA Knoxville (Building Owners and Managers Association)minorOthersProfessional association for commercial real estate building owners and managers.
Builders Exchange of TennesseeminorOthersConstruction industry organization providing project leads, networking, and industry resources.
Siemens Certified Solution PartnercoreTechnology or IntegrationCertified partnership with Siemens for building automation and controls solutions.
The Legacy CentreminorOthersRegional business and community organization.
Athens Area Chamber of CommerceminorOthersRegional chamber of commerce serving the Athens, TN area.

Scale indicators7 records

Recent moves9 records

Expansion highlights5 records

Interstate Mechanical Contractors, Inc. competitors and assessment

Company assessment

Broad incumbents

EMCOR Group: Largest publicly traded mechanical and electrical construction/services firm (NYSE: EME). Operates across all 50 states with a much broader portfolio; sets competitive benchmarks IMC must meet on large institutional bids.
APi Group: Global life safety, specialty, and industrial services holding (NYSE: APG) with significant mechanical services exposure. Active acquirer of regional mechanical contractors, representing both a competitor and potential acquirer of IMC.
U.S. Engineering Company Holdings: Large employee-owned mechanical contractor with multiple offices across the central U.S. Comparable in commercial mechanical construction scope and self-perform execution model with fabrication capabilities.

Direct peers

Lee Company: Tennessee-based mechanical, HVAC, plumbing, and electrical contractor serving commercial and residential customers across the Southeast. Most direct comparable in geography, service mix, and family-owned operating model.
Limbach Holdings: Public mechanical services firm (NASDAQ: LMB) specializing in HVAC, plumbing, and building automation for commercial/institutional clients. Closely aligned in service mix and emphasis on building automation/controls growth.
Bowman Mechanical Services: Regional mechanical contractor providing HVAC, plumbing, and mechanical construction services in the Southeastern U.S. Comparable size and customer base to IMC's commercial and industrial focus.
Comfort Systems USA: National mechanical contracting and HVAC service provider (NYSE: FIX) with regional operating subsidiaries. Directly comparable business model — commercial HVAC, plumbing, and mechanical construction with recurring service revenue.
S&S Mechanical Contractors: Tennessee-based mechanical contractor serving commercial, industrial, and institutional clients. Comparable in size, scope, and regional Tennessee focus as a direct peer to IMC.

Others

Synergy Solution Group: Strategic partnership group for independent mechanical contractors providing collective purchasing and best-practice sharing. IMC is a member; relevant as a peer-network organization shaping competitive positioning rather than a direct competitor.

Regional players

Broadway Mechanical Contractors: Mid-South commercial mechanical contractor serving Tennessee and neighboring states with HVAC, plumbing, and process piping. Comparable service mix and geography with overlap in Tennessee institutional work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks1 record

Key highlights6 records

Customer concentration

Interstate Mechanical Contractors, Inc. financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Interstate Mechanical Contractors, Inc. leadership team

Management profile

Number of profiles

Profiles2 records

Interstate Mechanical Contractors, Inc. subsidiaries and ownership

Company hierarchy

Subsidiaries1 record

Interstate Mechanical Contractors, Inc. funding detail

Funding detail

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

Interstate Mechanical Contractors, Inc. M&A and investment

M&A and investment

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Interstate Mechanical Contractors, Inc.

What does Interstate Mechanical Contractors, Inc. do?

Is Interstate Mechanical Contractors, Inc. a public or private company?

Interstate Mechanical Contractors, Inc. is a private company. It is classified as family owned and is currently operating.

When was Interstate Mechanical Contractors, Inc. founded?

Interstate Mechanical Contractors, Inc. was founded in 1982. It employs 101 to 250 people.

Where is Interstate Mechanical Contractors, Inc. based?

Interstate Mechanical Contractors, Inc. is headquartered in Knoxville, United States, in the North America region.

How does Interstate Mechanical Contractors, Inc. make money?

Four revenue lines are on record. Special Projects are the primary driver. The others are commercial Construction Services, preventive Maintenance Programs and 24/7 Emergency Service & Repair.

Who are Interstate Mechanical Contractors, Inc.'s main competitors?

Broad incumbents on record are EMCOR Group, APi Group and U.S. Engineering Company Holdings. Direct peers are Lee Company, Limbach Holdings, Bowman Mechanical Services, Comfort Systems USA and S&S Mechanical Contractors. Synergy Solution Group is listed as an others. Broadway Mechanical Contractors is listed as a regional player.

Does Interstate Mechanical Contractors, Inc. have an API?

No public API is recorded for Interstate Mechanical Contractors, Inc..

What industry is Interstate Mechanical Contractors, Inc. in?

Interstate Mechanical Contractors, Inc.'s product category is Commercial Mechanical Contracting Services. Its primary akta.pro industry code is IMAFALAB, HVAC & Refrigeration Contracting, with a secondary code of IMAFALAC, Plumbing & Pipefitting Contracting. Its NAICS code is 238220 and its SIC code is 1700.