CS3

What CS3 does

CS3, Inc. is a Tennessee-based mechanical/HVAC, plumbing, and building automation contracting firm founded in 1985 that designs, installs, fabricates, and services integrated building systems for commercial, municipal, educational, and industrial clients across the Southeastern United States. The company's core technology stack is built around Schneider Electric's I/A Series and EcoStruxure Building Operation platforms running on the Tridium Niagara Framework, supporting multi-protocol interoperability across LonWorks, BACnet, OPC, OBIX, and Modbus. CS3 complements its controls practice with in-house custom sheet metal fabrication (operated from a 39,000 sq ft shop equipped with an Orion hybrid laser cutter and a PPEC press brake), a Building Information Modeling department providing 2D/3D coordination, laser scanning, and prefabrication spool sheets, plus dedicated mechanical/HVAC, piping, plumbing, security, power monitoring, and safety service lines.

The firm operates as a subsidiary of PremiStar, a strategic operating company that consolidates 41 commercial HVAC, building automation, and plumbing branches across 12 states with over 2,000 employees, which provides CS3 with shared procurement, capital, and referral reach beyond its own Bartlett and Nashville offices. Its go-to-market is enterprise field sales: project bids, design-build engagements, and multi-year service contracts delivered directly to facility owners. Pricing is quote-based on a per-project basis, with a recurring service-contract revenue stream for preventive and corrective maintenance. Marquee engagements include Bridgestone Arena, FedEx Forum, St. Francis Hospital, the Northwest Tennessee Correctional Complex, Memphis Criminal Justice Center, University of Tennessee Humphreys GEB, and Rutherford County Courthouse — illustrating a portfolio weighted toward institutional, healthcare, and government venues.

Name

CS3

Legal name

CS3, Inc.

Website

https://cs3.com/

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

11–50 employees

Short description

CS3 is a Tennessee-based mechanical/HVAC, plumbing, and building automation contracting firm that designs, installs, and services integrated building systems for commercial, municipal, educational, and industrial clients across the Southeastern United States, operating as a subsidiary of PremiStar.

Ownership category

akta.pro rank

Product category

Mechanical and HVAC Contracting Services

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Sheet Metal Work (3444)

akta.pro primary industry

Sheet Metal & Ductwork Contracting (IMAFALAH)

akta.pro secondary industry

Electrical Contracting & Wiring (IMAFALAA)

Keywords

• Mechanical HVAC contracting
• Building automation systems
• Custom sheet metal fabrication
• Commercial plumbing services
• HVAC service contracts

Headquarters

HQ city

Nashville

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Mechanical/HVAC Services: Full array of professional mechanical contracting services including installation, maintenance, and repair of HVAC systems, chillers, boilers, air handlers, and related equipment for commercial and industrial facilities.
2. Building Automation Systems: Design, installation, and service of building automation and controls systems using Schneider Electric technology, providing integrated building management solutions.
3. Custom Sheet Metal Products: Manufacture of high-quality custom sheet metal products using advanced machinery including cutting, bending, welding, and machining services. 39,000 square foot sheet metal facility.
4. Plumbing Services: Commercial plumbing services including backflow testing, boiler systems, medical gas piping, drainage, and pipe fabrication.
5. Piping Services: Process and industrial piping installation for various applications including cooling towers, chillers, boilers, and sanitary systems.
6. Service Contracts: Ongoing mechanical/HVAC and controls service tailored to client needs including preventive maintenance, operational assessment, corrective maintenance, and emergency response.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

CS3 provides mechanical/HVAC contracting, building automation and controls, custom sheet metal fabrication, plumbing, process piping, power monitoring, and security services for commercial, municipal, educational, and industrial facilities. The firm combines Schneider Electric-based building automation (I/A Series / EcoStruxure / Niagara Framework) with traditional mechanical contracting, supported by an in-house BIM department for 2D/3D coordination, pre-fabrication, and laser scanning.

Product overview

CS3 is a mechanical/HVAC and controls contracting firm that operates as part of the PremiStar organization. The company offers an integrated suite of building technology services centered on building automation systems (using Schneider Electric I/A Series), combined with complementary mechanical services including custom sheet metal fabrication, piping, plumbing, security, and power monitoring. Their Building Information Modeling (BIM) department supports coordination and prefabrication across all service lines. Services are delivered to commercial, municipal, educational, and industrial facilities in the Southeastern United States.

Differentiator

Problem solved

Functional benefit

Products and services

• Building Automation Systems Building automation and controls services using Schneider Electric I/A Series technology with Niagara Framework, providing open, interoperable web-based solutions (supporting LonWorks, BACnet, OPC, OBIX, and Modbus) for monitoring and controlling building HVAC, lighting, smoke evacuation, and other systems. Sold to commercial, municipal, educational, and industrial facility owners.
• Mechanical/HVAC Service Mechanical and HVAC installation, maintenance, repair, retrofit, and controls services for commercial facilities. Includes preventive maintenance, operational assessment, corrective maintenance, and 24/7 emergency response under recurring service contracts.
• Piping Services Process and industrial piping installation and replacement services, including cooling towers, chillers, boilers, sanitary, and biomedical piping systems for commercial and industrial facilities.
• Custom Sheet Metal Products Custom sheet metal fabrication from a 39,000 sq ft facility, using computerized cutting, bending, welding, and machining. Equipment includes the Orion hybrid laser cutting machine (10-shelf loading tower, 3/4" mild steel / 1/2" stainless / 1/4" aluminum capacity) and PPEC press brake for precision bending.
• Plumbing Services Comprehensive commercial plumbing services including backflow testing, boiler systems, medical gas piping, drainage, pipe fabrication, and custom fabrication for commercial, healthcare, and institutional facilities.
• Security Services Integrated security and surveillance solutions including network digital video surveillance, video analytics, and access control systems, leveraging Pelco by Schneider Electric technology integrated with the firm's building automation practice.
• Power Services Power monitoring solutions for chiller optimization, demand response, tenant sub-metering, and critical power applications in commercial and industrial facilities.
• Building Information Modeling (BIM) BIM services providing 2D and 3D drawings for coordination, prefabrication, and documentation including laser scanning, as-builts, shop drawings, pre-fabrication spool sheets, and BIM coordination to support mechanical, plumbing, sheet metal, and piping projects.
• Safety Services Safety services to ensure successful, cost-effective, on-time project completion across mechanical, plumbing, piping, and controls engagements.

Quantifiable outcome

• Pre-fabrication of piping reduced field fabrication and installation time at Northwest TN Correctional Complex
• +1 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Three partnerships are on record, tiered core.

• Schneider ElectriccoreTechnology or IntegrationPrimary technology partner for building automation systems. CS3 uses Schneider Electric I/A Series and EcoStruxure Building Operation for BAS controls projects. Schneider Electric is the parent company of Pelco for security solutions and Tridium for Niagara Framework. CS3 is an EcoXpert partner.
• TridiumcoreTechnology or IntegrationTechnology partner providing the Niagara Framework that powers Schneider Electric I/A Series building automation systems used by CS3.
• PremiStarcoreStrategic or Co-development PartnerParent company of CS3, operating 41 commercial HVAC, building automation, and plumbing branch locations across 12 states with over 2,000 employees.

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• EMCOR Group: Largest publicly traded mechanical and electrical construction services company in the US, with significant building services and controls exposure. Operates at much larger scale but competes for the same enterprise/government/healthcare project work.
• PremiStar: Parent company and direct operator of CS3, running 41 commercial HVAC, building automation, and plumbing branches across 12 states. Directly comparable as the broader mechanical-services platform of which CS3 is a subsidiary.
• APi Group: Public safety, specialty, and industrial services company with a meaningful life safety and mechanical services segment. Comparable as a multi-vertical building services platform pursuing roll-up growth.
• Comfort Systems USA: National HVAC mechanical contracting platform operating 40+ subsidiaries across commercial and industrial markets. Comparable as a roll-up acquirer and operator of regional mechanical contractors similar in profile to CS3.

Others

• Trane Technologies: Major HVAC equipment manufacturer and building services provider with national service organization. Comparable as both a vendor (HVAC equipment) and a competitor for controls and service contracts.
• Johnson Controls: Global building automation and HVAC systems OEM that also provides installation and service through its own direct channels. Comparable as a controls competitor whose technology platform competes with Schneider Electric deployments.
• Carrier Global: Global HVAC and building automation provider (includes Automated Logic controls). Comparable as a controls competitor whose direct sales motion increasingly overlaps with independent integrators like CS3.

Direct peers

• Limbach Holdings: Public mechanical contractor specializing in HVAC, plumbing, and building automation with strong owner-direct relationships. Closely comparable business model combining mechanical contracting with controls integration, though at larger scale.
• Murphy Company: Privately held mechanical contractor providing HVAC, plumbing, piping, and controls across commercial and industrial markets. Comparable as a multi-trade mechanical contractor with similar customer mix and self-perform delivery model.
• Shambaugh & Son: Large privately held mechanical contractor providing HVAC, plumbing, building automation, and process piping across the Midwest and Southeast. Comparable as a multi-trade specialty contractor with deep controls integration capabilities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/CS3-Inc-143766625673311
• LinkedInlinkedin.com/company/cs3-infomat

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about CS3