What Does a Gas Fire Engineer Do? Having a gas fire regularly maintained by an Gas Safe Registered engineer can help prevent carbon monoxide poisoning. CO is a poisonous, toxic gas that can cause symptoms such as headaches and nausea. It is also essential to establish evacuation zones, based on https://gassafecertificatecheck29422.blogoxo.com/30858694/corgi-gas-engineer-explained-in-less-than-140-characters