Company Profile

Tosti Energy Services Company (TESCO) is a mechanical engineering company specializing in building controls, commercial refrigeration system design and control, control systems commissioning, and other energy related services. Since inception in 1999, TESCO has provided the industry with quality engineering services to meet specific customer needs.

Paul Tosti founded the company in 1999 and is the company Principal. Paul earned a Bachelor of Science degree in Mechanical Engineering, with a specialization in Energy Engineering, from the University of Massachusetts at Amherst in 1978. He has held a variety of energy-related positions in both R&D and the commercial application of energy saving measures. Paul’s work with microprocessor-based building controls spans the lifetime of the industry. His retail and hospitality industry experience also includes building commissioning, lighting system retrofits, and energy conservation program design and implementation.


David Scott joined the company in 2008 and is the Senior Engineer. David holds an Associate’s degree in Engineering and a Bachelor of Science degree in Mechanical Engineering Technology from Wentworth Institute in Boston, Massachusetts. David has over 15 years of work experience in refrigeration system engineering, energy management systems design and commissioning, retail electrical and lighting systems design, and energy conservation program development and implementation.

To learn more about how TESCO can assist with your next project, please contact us via phone or email.

TESCO associations and accreditations:
Authorized reseller of Com-Trol/TAC EMS equipment.
ComTrol service contractor and Com-Trol authorized trainer.
Danfoss food retail certified silver contractor.
U.S. Green Building Council, LEED accredited professional, 2007.