Fidelity Building Services Group is one of the nation’s leading providers of HVAC/Mechanical Services and Energy Solutions.


Backed by a world-class service culture, we deliver unmatched value to our

Dave Lanphar

A New Future

“It’s a new era for technical building services and solutions and Fidelity BSG is at the forefront.”

Dave Lanphar,














Powering Key Industries

Fidelity BSG brings its best-in-class expertise in technical building services and solutions to our country’s most important industries. To each project, we deliver proven skills, an intense customer-service focus, and digital technology solutions tailored to a building’s requirements, using data to drive predictable results for higher building performance and reliability.

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Commercial/ Industrial

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Mission Critical


Our Portfolio Companies

Air One Industries

Based in North Carolina, Air One Industries is a full service HVAC/Mechanical provider that services industrial and commercial buildings, including healthcare, government, manufacturing, pharmaceutical, religious institutions and more.

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AIR Technologies

Since 1976, AIR Technologies has been providing exceptional HVAC/Mechanical services to businesses throughout the greater Oklahoma City region with a focus on commercial, industrial, and governmental projects.

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Benchmark Automation & Controls

A leading-edge Building Automation and Controls company with over 50 years of experience.

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Central Tech Services

High-end, comprehensive Central Plant Chiller Services provider specializing in predictive maintenance, overhauls, and energy-efficient system upgrades.

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Chesapeake Mission Critical

Chesapeake Mission Critical is a leader in data center and mission-critical facilities solutions and services, specializing in the design, installation, and maintenance of uninterruptible power supply, precision cooling, switchgear, power distribution, and infrastructure technologies.

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Cii Service

Cii Service provides HVAC/Mechanical and Energy Management Services to commercial, industrial, and institutional buildings in Central and Southwest Virginia, and the Piedmont area of North Carolina.

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CT/HX provides premium services on cooling towers and heat exchangers to industrial and commercial markets in Florida, Maryland, Pennsylvania, and Virginia.

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Darnold Mechanical

Darnold Mechanical provides a full line of expert HVAC/Mechanical products and services to commercial and residential customers throughout Central and Southern West Virginia.

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Environmental Systems Co.

Environmental Systems Co. is a building-integrated systems contractor that helps facility owners and managers enhance building performance by planning and integrating intelligent building solutions.

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Fidelity Mechanical Services

The premier provider of mechanical HVAC design, installation, and service in the Mid-Atlantic region.

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Fidelity Energy & Sustainability

A national energy and sustainability initiative that will revolutionize how energy-intensive facilities are transformed into sustainable environments.

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Fidelity Power Systems

Experts in Emergency Power Generation including sales, service, and rentals.

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HCT Control Technology

HCT Control Technology is a national provider of advanced systems integration, and control system design and installation services throughout New Jersey.

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H.E. Neumann Company

H.E. Neumann Company is a full-service mechanical contracting firm serving industrial and commercial markets throughout the Ohio Valley Tri-State region.

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HVAC Concepts

Premium, end-to-end Building Automation Systems and IoT provider with 24/7/365 staffed digital monitoring center.

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James Lane Mechanical

James Lane Mechanical provides a full range of state-of-the-art HVAC/Mechanical services throughout the Wichita Falls and North Texas region.

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Lyons Mechanical Services

Lyons Mechanical Services offers comprehensive HVAC/Mechanical solutions for industrial, institutional, and commercial markets in Kentucky and states throughout the Southeast.

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Martin J. Braun

A highly-specialized mechanical contractor with expertise in commercial, industrial, mission critical, and government facilities.

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Metro Mechanical

Headquartered in Central Mississippi, Metro Mechanical is a full-service commercial mechanical systems provider that offers design, fabrication, installation, service, and maintenance for HVAC, plumbing, and building automation.

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Power of Clean Energy

Based in Tennessee, Power of Clean Energy helps commercial and industrial facilities meet their ESG sustainability goals, while reducing energy consumption, expenses, and carbon footprints.

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ServiceX M.E.P.

ServiceX M.E.P. is a distinguished provider of mechanical, electrical, and plumbing services catering to the Maryland, Delaware, Virginia, and Washington D.C markets.

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Smart Building Technologies

A leading provider of complete solutions for Building Automation Systems in the Mid-Atlantic region, helping building engineers, managers and owners operate their facilities efficiently.

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South Florida Controls

South Florida Controls is a building automation and controls systems integrator that delivers innovative, dependable and sustainable solutions to commercial, industrial, institutional buildings to the South Florida market.

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Star Service

Premier Gulf Coast provider of mission-critical HVAC Services, offering customized Technical Building Service, Repair, and Retrofit solutions.

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System Service & Engineering

System Service & Engineering specializes in complex building systems. Through innovative and customized solutions, we provide end-to-end expertise in HVAC/Mechanical services, Plumbing, Building Automation, and Electrical Systems to commercial markets in Northwest Florida.

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Systems Contractors

Systems Contractors, located in Greensboro, NC, offers a full range of HVAC systems and solutions - delivering the latest innovations and technology across the country.

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United Mechanical

A leading full-service mechanical contracting company that offers HVAC, controls, electrical, plumbing services, and more, along the Gulf Coast of Southwest Florida.

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