What is a gas plumber? A gas plumber, basically, is a person who specializes in the installation and repair of gas plumbing and fittings, ranging all the way from regulators to gas appliances like water heaters and stoves. You may have heard about these types of plumbers, but for a number of reasons, maybe you have never thought of giving it some serious consideration. However, whether it is just a minor gas plumbing repair or you are thinking of having your whole gas plumbing system installed, there is every reason why you need to work with a professional gas plumber. A professional gas plumbing service provider is trained and will ensure that your home or company will run well with a safe and sturdy gas pipeline.