Since 1933, Concord Oil Company has provided consistant and affordable heating and cooling services to the local community. Our team is dedicated to ensuring round- the- clock service to keep you warm in the wintertime. Our technicians are skilled in working with all boilers, furnaces, and hot water heaters and are available 24/7. Concord Oil has remained a staple of the community by caring for our customers like family. Concord Oil services Concord, Carlisle, Acton, Bedford, Westford, Groton, Maynard, Chelmsford, Littleton, Ayer, Boxborough, Harvard, Bolton, Stow, Sudbury, Lincoln, Waltham, Burlington, Lexington, Arlington, Belmont, Netwon, Wellesley, Natick, Framingham, Marlborough, Shirley, Pepperell, Dunstable, and Tyngsboro.