National H.V.A.C. Service, Ltd. (National HVAC Service) provides heating, air conditioning and mechanical services, primarily in the commercial, industrial and institutional market sectors. It offers a wide range of offerings to its customers from guaranteed maintenance agreements to complete system installations. The National HVAC Service family of companies presently has seven primary branch offices and three satellite branches located in various cities. In this region, primary branch offices are located in Seaford, Del. and New Castle, Del. Satellite branch offices are located in Lewes, Del. and Norristown, Pa.
Historic Odessa thanks National HVAC Service for their sponsorship of the 2018 Historic Odessa Brewfest. National HVAC Service has been sponsoring the Brewfest since 2015.