More about us: complete heating work done back flow prevention device testing, installation & service, (lic. long beach, freeport, town of hemp. and rockville centre & oyster bay). Our products and services include back flow prevention device, bathrooms installed & remodeled, complete heating work done, complete repair service, licensed & certified back flow device installation &, licensed & certified back flow device installation & service, master plumbers, residential commercial, specialists in gas boiler conversions & water heaters, testing and installation & service. We offer service in and around residential and commercial. We prefer to use these brands: commercial and residential. Our certifications include nys certified.