MEP Services

MEP Services is a family of three companies with more than 700 employees and 11 offices across six Northeastern and Mid-Atlantic states serving clients in Pennsylvania, Delaware, New Jersey, New York, Massachusetts, New Hampshire, Rhode Island, Connecticut, Vermont and the Carolinas as well supporting clients with multiple locations across the U.S.

The companies associated with MEP Services group are H.T. Lyons, B-G Mechanical and Fred Williams. Furthermore, H.T. Lyons does business in the greater New York City area as Trystate, a trusted name for more than 50 years.

MEP Services and its associated companies are part of Equans, a world leader in energy and services, with a strong presence in 20 countries across five continents. It provides multi-technical services including facility management, energy efficiency, digital solutions, and infrastructure development, supporting clients in their energy, digital, and industrial transitions. Equans has a worldwide workforce of more than 100,000 employees.

Organizationally, MEP Services is part of Equans North America, a leader in mechanical and electrical construction, industrial and energy infrastructure, and building services across the United States and Canada. Equans NorAm operates as a collaborative group of contracting and operating companies, with combined revenues of $2.3 billion in 2023 and over 7,500 skilled employees across more than 35 U.S. states and Canadian provinces.

MEP Services companies offer services, including:

Construction

  • Design‑Build
  • Design‑Assist
  • Integrated Project Delivery
  • MEP Construction
  • Industrial Solutions
  • Process Piping Solutions

Planning & Design

  • Engineering
  • BIM and VDC

Energy and Engineering

  • Energy Solutions
  • Energy Audits
  • Energy Efficiency
  • Distributed Energy Resources

Fabrication & Offsite Construction

  • Modular Construction
  • Sheet Metal Fabrication
  • Piping Systems Pre‑Fabrication

Specialty Services

  • Testing, Adjusting and Balancing
  • Building/Energy Controls & Equans Digital
  • Commissioning

Building Services

  • Building Operations
  • Boiler and Chiller Services
  • Preventive Maintenance
  • Special Projects
  • 24/7 Emergency HVAC Services

Being supplier-agnostic means MEP Services delivers the optimum choice of technology and brands to best meet your safety, sustainability, efficiency, comfort and resiliency needs.

Our Businesses

We Make Your Building Better | Headquartered: Allentown, PA | Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas

H.T. Lyons is part of Equans MEP Services (MEP Services), a mechanical, HVAC, distributed energy, and project delivery solutions-provider subsidiary of Equans North America. MEP Services is five companies with nearly 750 employees serving the Northeast U.S. H.T. Lyons is a full-service and award-winning mechanical contractor serving Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas. We serve business segments including colleges & universities, commercial, government, healthcare, industrial, entertainment, high-tech and life sciences. H.T. Lyons offers a full complement of engineering, design, construction, maintenance and energy solutions. We are a single-source provider for everything from $40 million design-build projects to a simple plumbing repair and have been serving our clients since 1973. Our extensive in-house capabilities allow us to offer our clients the highest quality and most cost-effective building services in the industry. As an Equans MEP Services company, we have the resources and backing to handle the largest design-build, design-assist, industrial and commercial projects with confidence. Count on us to deliver the expertise and experience to keep your facility operating reliably and efficiently.

Construction Planning & Design Boiler Service Boiler Service Bldg Information Modeling (BIM) Energy Solutions Fabrication & Offsite Construction Specialty Services Building Services 24/7 Emergency Services Design Build Design Assist HVAC Asset Management Integrated Project Delivery MEP Construction Industrial Solutions Certification Testing Process Piping Testing, Adjusting and Balancing Engineering Balancing & Certification Energy and Engineering Energy Audits Energy Efficiency Distributed Energy Resources Modular Construction Sheet Metal Fabrication Pipe Systems Fabrication Commissioning Building/Energy Controls & Equans Digital Building Operations Boiler and Chiller Services Preventive Maintenance Special Projects Mechanical Services Boiler Service Chiller Service Plumbing Services Drain Line & Plumbing Services Emergency Replacements/Repairs Upgrades Engineered Projects Engineering Services Building Information Modeling (BIM) Building Automation Systems Controls Industrial Fabrication Chiller Service
We Make Your Building Better | Headquartered: Chicopee, MA | Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas

H.T. Lyons is part of Equans MEP Services (MEP Services), a mechanical, HVAC, distributed energy, and project delivery solutions-provider subsidiary of Equans North America. MEP Services is five companies with nearly 750 employees serving the Northeast U.S. H.T. Lyons is a full-service and award-winning mechanical contractor serving Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas. We serve business segments including colleges & universities, commercial, government, healthcare, industrial, entertainment, high-tech and life sciences. H.T. Lyons offers a full complement of engineering, design, construction, maintenance and energy solutions. We are a single-source provider for everything from $40 million design-build projects to a simple plumbing repair and have been serving our clients since 1973. Our extensive in-house capabilities allow us to offer our clients the highest quality and most cost-effective building services in the industry. As an Equans MEP Services company, we have the resources and backing to handle the largest design-build, design-assist, industrial and commercial projects with confidence. Count on us to deliver the expertise and experience to keep your facility operating reliably and efficiently.

Construction Planning & Design Energy Solutions Fabrication & Offsite Construction Specialty Services Building Services Design Build Design Assist Integrated Project Delivery MEP Construction Industrial Solutions Process Piping Engineering BIM and VDC Energy and Engineering Energy Audits Energy Efficiency Distributed Energy Resources Modular Construction Sheet Metal Fabrication Pipe Systems Fabrication Commissioning Building/Energy Controls & Equans Digital Building Operations Preventive Maintenance Special Projects Mechanical Services Plumbing Services Drain Line & Plumbing Services Emergency Replacements/Repairs Upgrades Engineered Projects Engineering Services Building Information Modeling (BIM) Building Automation Systems Controls Industrial Fabrication Chiller Service Testing, Adjusting and Balancing Bldg Information Modeling (BIM) Boiler Service 24/7 Emergency Services HVAC Asset Management Certification Testing Balancing & Certification
We Make Your Building Better | Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas

H.T. Lyons is part of Equans MEP Services (MEP Services), a mechanical, HVAC, distributed energy, and project delivery solutions-provider subsidiary of Equans North America. MEP Services is five companies with nearly 750 employees serving the Northeast U.S. H.T. Lyons is a full-service and award-winning mechanical contractor serving Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas. We serve business segments including colleges & universities, commercial, government, healthcare, industrial, entertainment, high-tech and life sciences. H.T. Lyons offers a full complement of engineering, design, construction, maintenance and energy solutions. We are a single-source provider for everything from $40 million design-build projects to a simple plumbing repair and have been serving our clients since 1973. Our extensive in-house capabilities allow us to offer our clients the highest quality and most cost-effective building services in the industry. As an Equans MEP Services company, we have the resources and backing to handle the largest design-build, design-assist, industrial and commercial projects with confidence. Count on us to deliver the expertise and experience to keep your facility operating reliably and efficiently.

Construction Planning & Design Energy Solutions Fabrication & Offsite Construction Specialty Services Building Services Design Build Design Assist Integrated Project Delivery MEP Construction Industrial Solutions Process Piping Engineering Energy and Engineering Energy Audits Energy Efficiency Distributed Energy Resources Modular Construction Sheet Metal Fabrication Pipe Systems Fabrication Commissioning Building/Energy Controls & Equans Digital Building Operations Preventive Maintenance Special Projects Mechanical Services Certification Testing Plumbing Services Drain Line & Plumbing Services Emergency Replacements/Repairs Upgrades Engineered Projects Engineering Services Building Information Modeling (BIM) Building Automation Systems Controls Industrial Fabrication Chiller Service Boiler Service Bldg Information Modeling (BIM) 24/7 Emergency Services HVAC Asset Management Certification Testing Balancing & Certification Testing, Adjusting and Balancing
We Make Your Building Better | Headquartered: Douglaston, NY | Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas

H.T. Lyons is part of Equans MEP Services (MEP Services), a mechanical, HVAC, distributed energy, and project delivery solutions-provider subsidiary of Equans North America. MEP Services is five companies with nearly 750 employees serving the Northeast U.S. H.T. Lyons is a full-service and award-winning mechanical contractor serving Pennsylvania, New York, Delaware, New Jersey, Connecticut and the Carolinas. We serve business segments including colleges & universities, commercial, government, healthcare, industrial, entertainment, high-tech and life sciences. H.T. Lyons offers a full complement of engineering, design, construction, maintenance and energy solutions. We are a single-source provider for everything from $40 million design-build projects to a simple plumbing repair and have been serving our clients since 1973. Our extensive in-house capabilities allow us to offer our clients the highest quality and most cost-effective building services in the industry. As an Equans MEP Services company, we have the resources and backing to handle the largest design-build, design-assist, industrial and commercial projects with confidence. Count on us to deliver the expertise and experience to keep your facility operating reliably and efficiently.

Construction Planning & Design Energy Solutions Fabrication & Offsite Construction Specialty Services Building Services Design Build Design Assist Integrated Project Delivery MEP Construction Industrial Solutions Process Piping Engineering Energy and Engineering Energy Audits Energy Efficiency Distributed Energy Resources Modular Construction Sheet Metal Fabrication Pipe Systems Fabrication Commissioning Building/Energy Controls & Equans Digital Building Operations Preventive Maintenance Special Projects Mechanical Services Certification Testing Plumbing Services Drain Line & Plumbing Services Emergency Replacements/Repairs Upgrades Engineered Projects Engineering Services Building Information Modeling (BIM) Building Automation Systems Controls Industrial Fabrication Chiller Service Boiler Service Bldg Information Modeling (BIM) 24/7 Emergency Services HVAC Asset Management Certification Testing Balancing & Certification Testing, Adjusting and Balancing
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