More about us: gas heating specialist and nationalgrid. Our products and services include bathroom renovations, construction, emergency plumbing, sewer & drain cleaning, gas heat installations, gas water heaters, keyspan energy, radiant floor heating, repairs & alterations, sewer & drain cleaning and sewer repair & replacement. Accepted forms of payment are licensed & insured. Our certifications include licensed & insured and nys certified backflow tester & installer since 1920.