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What Does a Boiler Gas Engineer Do? A boiler gas engineer makes sure that heating systems, water heaters and other appliances work correctly. They also keep homes safe by identifying and fixing potential leaks. Carbon monoxide is a dangerous gas that prevents oxygen from being carried by the blood around the body. A malfunctioning boiler could let this gas enter your home. Qualifications A boiler gas engineer is highly skilled professional who maintains, repairs and installs gas-powered appliances in commercial and residential settings. They perform