No Job Too Big or Too Small. Carl's Plumbing & Mechanical is a family owned and operated business, proudly providing professional plumbing maintenance and repair services since 1998. Carl's Plumbing & Mechanical is your residential and commercial plumbing company, providing complete services from simple faucet leaks, emergency plumbing and toilet repairs, drain cleaning, kitchen and bathroom remodeling, radiant floor heating, water heaters, steam and hydronic heating system installation and repair as well as new construction. Due to the high cost of energy demands we are proficient in the installation and rapair of high efficiency tankless water heaters and high efficiency boilers. We specialize in oil to gas conversions and work with National Grid in their oil to gas conversion program. For those of you who love oil or are not fortunate to have gas in your local area, we can install and repair your oil boiler.