Weston & Sampson provides holistically integrated mechanical, electrical and plumbing (MEP) solutions. Our mechanical and electrical engineers and designers have a vast depth and diverse experience in all aspects of HVAC, mechanical, power, lighting, energy management and generation, and a myriad of other specialty systems. Our experience encompasses the full range of engineering, analysis, planning, and design of systems for both new and retrofit buildings and systems for a variety of facility types for both the public sector clients as well military, institutional, industrial, and hi-tech clients. Facility types include aquatics, commercial office, research and development, historic renovation, medical and electronic laboratories, private and public schools, higher education, manufacturing facilities, clean rooms, pump stations, water and wastewater treatment facilities, sports facilities, residential and retail complexes, data centers, and district heating and cooling systems.

Weston & Sampson provides services for buildings and facilities of varying size and complexity. Our engineering staff stays with your project from concept development through production of contract documents and into construction field services.

News & Highlights

Nicholas Humber 2016 EBC Nicholas Humber Environmental – Energy Award - The Environmental Business Council of New England (EBC) announced that Weston & Sampson is the recipient of the Nicholas Humber Environmental –Energy Award for Outstanding Collaboration, in recognition of outstanding public-private collaboration.


  • Heating
  • Ventilation and industrial exhaust systems
  • Air conditioning and process cooling and refrigeration
  • Plumbing
  • System-wide energy and resource optimization
  • Building and system controls


  • Building and utility power systems
  • Lighting
  • Fire alarms

Distributed Energy

  • Hot water and steam heating systems
  • Cogeneration and trigeneration
  • Microgrids and infrastructure hardening
  • Renewable energy sources