Company Profile

Anthony DemorA. J. Demor & Sons, Inc. is a full service mechanical contracting firm specializing in Plumbing, HVAC, and Process Piping.


In 1925, its original founder, Anthony Joseph Demor, organized the company under the name of A. J. Demor.

TruckWhen Arthur Joseph Demor, Anthony’s son, joined the firm in 1946, the company name was changed to A. J. Demor & Sons. Through progressive growth and expansion, the company was incorporated in 1965.


Art DemorCurrently, fourth generation family members are involved in the direct management of the corporation under the leadership of David Arthur Demor.

Headquartered in Monroeville, Pennsylvania, fifteen miles east of Pittsburgh, with a full service-operating unit in Throop, Pennsylvania, five miles north of Scranton, A. J. Demor & Sons, Inc. is able to serve the entire State of Pennsylvania and it’s bordering states. A wholly owned subsidiary, AJD of W VA, Inc., was established in 1996 for projects performed in the State of West Virginia.


The quality services available to our customers include pre-construction planning, mechanical system feasibility studies, design build, team construct and competitive bidding. Our innovative practices, along with state-of-the-art methods and procedures, result in excellent installations completed in harmony with other contractors.

A. J. Demor & Sons, Inc. experience includes projects completed in commercial, multi-family housing, institutional, light industrial, and water treatment plant segments of the market. In addition, A. J. Demor & Sons, Inc. has the financial stability to ensure a successful project. Should the project require a performance and payment bond, our current bonding line of credit is sufficient to meet our customer’s needs.

“Pride of Accomplishment” has always been the philosophy of our entire organization. We at A. J. Demor & Sons, Inc., with the commitment of our personnel, shall continue to assure our customers of quality service while completing the projects on time, within budget and to their satisfaction.