PROFILE: DeLong Plumbing Heating and air was founded in January of 1991 by Garry R. DeLong and a very supporting family. DeLong Plumbing: Commercial, residential, and industrial plumbing, heating and air-conditioning. Masters licensees in Plumbing, Mechanical, Heating and cooling, and Gas. Office Hours: Mon-Fri 7am-4:30pm * Sat-Sun Closed **Also Serving the Tri-Lakes Area**