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The Importance of a Gas Registered Engineer In the UK, engineers and plumbers need to be Gas Safe registered in order to work with gas. This is crucial because carbon monoxide poisoning, defective central heating systems, and boiler installations kill a lot of people every year. Engineers must demonstrate their skills and competence to become Gas Safe registered. To prove this, engineers must pass assessments. Once successful, they will be given probationary registration status. You can also find out more about Qualification Before an enginee