Specialties For superior craftsmanship at great prices, count on GMAC Plumbing & Heating. With over 30 years of experience, we are your one-stop resource for plumbing, heating, and bathroom remodeling. Our services include complete plumbing & heating services, bathroom remodeling, natural gas boiler & water heater installation & repair, tankless water heaters, fixtures, faucets, sinks, garbage disposals, toilets. tubs & showers and more. History Established in 1981 With more than 30 years of experience, our locally-owned and operated business is your one-stop resource for everything that water flows through. Owner Glenn McLellan began his career as a pipefitter in the Navy. Today, he protects homes from faulty piping and more by using quality materials and an expert hand. Unlike other plumbers, we only sell you what you need or ask for – nothing else.