Electric and Pneumatic Contractors

Hours of Operation: Mon - Fri 8:00am - 8:00pm

Electric and Pneumatic Controls Installation

    Design, Engineering, Control, Automation



    We are an Electrical Contractor established in 1967 providing electrical control and power installation to the Maryland and surrounding areas for over 50 years. Our labor force consists of Electricians from Local #24 Baltimore, Electricians from Local #26 Washington DC, and steamfitters from Local #486 Baltimore for pneumatic controls installation and repairs.
    We provide Industrial and Commercial installation and/or repair of High/medium/low voltage wiring, lighting, low voltage control wiring, pneumatic controls, VFDs, generators, firealarm, security, fiber optics, minor mechanical work, industrial controls design and HVAC controls design.

    Deca currently maintains a crew of 75 full time electricians, 2 Steamfitters and 30 service vehicles. This insures very prompt service and dependability. The majority of our employees have many years experience in the control and electrical industry. We also have several master electricians on staff. I can confidently say we have some of the top steamfitters and electricians in the industry.

    Our dedicated and efficient office staff keeps our company very competitive while maintaining a High Quality of Installation for the Customer.


    Some of our Projects

    West Refrigeration/Steam Plant AOC Washington DC

    USNA Lejeune Chiller Plant

    BWI Airport Multiple Projects

    • Marriot Hotel Washington DC 
    • FAA Sites Nation Wide
    • Amazon DBA2, DBA3, HBWI HVAC Upgrades
    • BWI E pier Expansion Building Automation
    • BWI Cbis Fire Alarm
    • BWI DE Connector
    • BWI Garage Fiber Network Upgrade
    • Dundalk Marine Terminal
    • Bolling AFB
    • VA Chiller Replacement
    • Legg Mason New Headquarters Baltimore
    • Towson University CLA Phase II
    • Westminster High School
    • Aberdeen Proving Grounds
    • NIH Boilers PLC Upgrade and UPS power
    • Walter Reed Medical Center
    • MVA Maryland
    • Baltimore Power Conditioner Energy Project
    • Social Security Administration Energy Project
    • SSA Metro West 1200KVA Generator Replacement
    • Fannie Mae
    • Carroll County Elementary Schools Fire Alarm  
    • Veolia Chilled Water system for Baltimore 
    • Millenium Co Generation Plant
    • Johns Hopkins Hospital
    • NSA
    • Various Commercial Buildings Power & Mall Store Work
    • Fort Meade
    • Fort Detrick
    • Baltimore Convention Center
    • Union Memorial Hospital
    • Upper Chesapeake Hospital
    • Northwest Hospital
    • CIA
    • US Navel Academy
    • Oriole Park @ Camden Yards
    • M&T Bank Stadium
    • Various other Government Facilities


    Company History

    Established in 1967, Wendell Petri (Pete) and William Ruley (Bill) purchased David E. Crook Association and reorganized as DECA Inc. Pictured below in September of 1976, on the date of purchase of the 6511 Harford Road Office.    (Left to right) 

                                   Pete Petri, Debbie Ruley ,Bill Ruley

    Left to Right Wendell Petri, Debbie Ruley, William Ruley

    Current Deca Location @ 6501 Harford Road Built in 2002-2003

    Whats New

    Deca Inc Earns NECA Safety Honors

    The Safety Exellence Awards are one of NECA's premier recognition programs, and acknowledges member contractors' annual safety performance. Winners are selected based on their comparison to BLS data and electrical contractors. This Year, DECA Inc. earned recognition within NECA's District II as "Zero Injury" Award Winner. Congradulations to DECA for This Acievement and continued excellence in not only electrical contracting but also the safe work practices that you have cultured over the years.

    FAA Air Route Traffic Control Center HVAC Controls Upgrades Projects.
    Miami, Jacksonville, Chicago, Kansas City, Fort Worth, Houston, Albuquerque, Anchorage,Long Island, Cleveland

    Steven Petri Sr Elected Governor of Maryland Chapter NECA

    Glenn Selvage APG Metering Project

    Deca Completes Controls Installation in the Museum of The Bible 

    Corp Info

    Steven M. Petri Sr

    Wendell A. Petri
    Vice President

    Michael J. Litchfield
    Sr. Project Manager Officer

    Peter F. Raab Jr.
    Sr. Project Manager Officer

    Mike Mcquay:
    Project Manager Officer

    Steven Petri Jr
    Project Manager

    Daneen Bancewicz


    Charmaine Johnson

    Administrative Assitant

    Licensing Information: Maryland, Virginia, West Virginia, Washington DC, Delaware

    D&B #: 46281580