Since 1932, R.M. Thornton Inc. has been a provider of commercial, mechanical, contracting, plumbing and heating, ventilation and air conditioning services in the areas of Maryland, District of Columbia and Virginia. Its client list includes Citibank, Corning Construction Co, McGrath Construction Inc, NASA, Pitney Bowes and Sleepy Hollow Nursing Home, St. Jane de Chantal Parish, Sudbury Condominiums, U.S. Army Corps of Engineers, U.S. Army Research Laboratories and Washington Real Estate Investment Trust. R.M. Thornton Inc. is a member of the Linc Service Network. The company s expertise range from replacing outdated equipment such as chillers and boilers to installing fire protection systems, digital controls, large diameter piping and colling systems.