M.J. Daly offers insurance services for heating, ventilation and air conditioning and protection and plumbing systems. It offers a range of sprinkler design, construction and installation services. In addition, the company provides design, fabrication and installation services for piping systems. M.J. Daly s sprinkler systems are used in a variety of applications, including office buildings, hospitals, health care institutions, schools and universities. The company operates a fabrication shop, which is a multimillion 53,000 square-foot controlled manufacturing environment that offers specialized pipe fabrication and material handling equipment, as well as warehousing and logistics support services. Its clients include Danbury Mall, Boston Latin School, and Stop & Shop.