Our Projects/Clients

Here are just a handful of DEI Clients whom we've serviced over the past decade and beyond. Our track record and history in this business places us at the forefront of our competition. Our reputation is what we value. We challenge ourselves vigorously to maintain it everyday. A first class installation is what our clients demand, first class is what they get with DEI Systems. THAT IS OUR PROMISE!

Bentley  Babson College  Crown Holdings, Inc.



Brandeis University

Hanscom Air Force Base Massachusetts

Enterprise Bank and Trust Company  Schlott Tire

Marshalls  TJX Companies, Inc.  Long's Jewelers LTD

Comfort Systems USA - BCM Controls Corporation  Cracker Barrel  Alpha Omega AS & E

RD-Tech Grubb & Ellis Town of Tewksbury

Merrimack Repertory Theatre

 

We can always be reached at 800-258-7752

DEI Systems Inc. :: Tewksbury, MA :: One Source Electrical, Fire Alarm & HVAC Control Systems Provider Electrical Division Fire Alarm Division HVAC Controls Division