Founded in 1917, Eckhardt & Johnson Inc. is one of the longest serving commercial and industrial mechanical contractors in New Hampshire. Located in Manchester, N.H., the company began as a residential plumbing and heating company. Eckhardt & Johnson Inc. provides a host of services to its customers, including plumbing repairs, tenant fit-up, boiler cleaning, efficiency testing, exhaust systems, service agreements, steam piping and many more. The company has a vast client base, including Pinkerton Acadmey - Freshman Building, Plymouth State University-Ice Arena, Idlehurst Elementary School, NHCTI Concord- MacRury Hall and Huntington - Nashua.