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The Importance of a Gas Registered Engineer In the UK, engineers and plumbers must be Gas Safe registered in order to work with gas. This is essential because carbon monoxide poisoning, faulty central heating systems, and boiler installations kill a lot of people each year. Engineers must demonstrate their skills and competence to be Gas Safe registered. To prove this, engineers must pass assessments. If they pass they will receive probationary registration status. Qualification Befor