What should be done before servicing a gas appliance?

Before servicing a gas appliance, it is crucial to ensure that the gas supply is shut off. This step is vital for safety because it prevents any accidental release of gas that could pose a risk of explosion, fire, or asphyxiation. Servicing a gas appliance involves various procedures that may expose components to air or require tools that could create sparks or heat. By shutting off the gas supply, technicians can work safely and confidently, knowing that there is no gas flowing through the system during the service.

While checking gas pressure, inspecting valves for leaks, and turning on connected appliances are important maintenance tasks, they are not the primary safety measure that should be taken before commencing any service work. Ensuring the gas supply is off is the first and most critical action to minimize risk and protect both the technician and the environment.