Dennis Allen

Dennis Allen is the Chief Operating Officer and the Director of HVAC for Harold Brothers Mechanical. His current role includes overseeing daily operations in all aspects of the HVAC department from Estimating, Project Management, Equipment and Subcontractor procurement through completion of all HVAC projects. Dennis currently lives in Marshfield, Ma with his Wife of 15 years and their 2 children. Dennis is very involved in town youth sports and volunteers with Marshfield Youth Soccer and Hockey. You will see him at hockey rinks and soccer fields throughout New England on most weekends, when Dennis is not at the rink or fields, he enjoys spending time with family and friends and is frequently spotted fishing in Duxbury Harbor. Dennis takes pride in his upbringing in the mechanical industry, he started as an apprentice in 2001 and has worked his way up through hard work and dedication in his field. He has worked on multiple large-scale projects throughout his career and credits his development to the tradesman who took him under their wing and provided the knowledge needed to succeed. In his current role he works closely with property owners and engineers to assure each and every project is designed to meet each client’s needs. He is very passionate in the success of the younger generation getting into the field and has donated his time to teach and educate field personnel on how to interpret design documents, installation practices and understanding of current codes. He believes all people regardless of background should be given the opportunity to enter the Pipefitting/Refrigeration industry and be set up for success. He recognizes that his industry is facing a major skilled trade shortage and is firm in his belief that training and education should be made available to all people looking to enter the trade. In 2016 he had the foresight to see our industry was evolving to more energy efficient systems and took a trip to Japan to educate himself on the Variable Refrigerant Flow systems which we currently see being implemented in designs throughout the commonwealth. The people of Japan have been utilizing this technology since the 1970’s and provided invaluable insight into how these systems get manufactured, installed and operate. In 2024 Dennis was appointed a member of the Massachusetts Board of Pipefitters, Refrigeration Technicians, and Sprinkler Fitters.