Hamilton Plumbing, Heating, A/C, Rooter is hiring In-Store Sales Representatives / Lead Generators to represent our HVAC and plumbing services inside national home improvement retail stores. Hamilton Plumbing, Heating, A/C, Rooter is the nation''s largest provider of residential HVAC, plumbing, and electrical services, with more than 7,000 professionals and 45+ years of experience serving homeowners across the country.