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What is a standard practice for maintaining gas appliances?

  1. Regular service and inspections

  2. Annual filter replacement

  3. Periodic painting of pipes

  4. Installing extra heat shields

The correct answer is: Regular service and inspections

Maintaining gas appliances is crucial for ensuring safety and efficiency, which is why regular service and inspections are considered standard practice. This involves checking for leaks, assessing the overall performance of the appliance, and ensuring that all safety devices are functioning correctly. Regular service by qualified professionals helps identify potential issues before they become serious problems, thereby preventing hazardous situations like gas leaks or appliance malfunctions. Annual filter replacement is important for many heating systems, particularly in forced-air HVAC systems, but it specifically pertains to systems that use filters, which doesn't apply universally to all gas appliances. Periodic painting of pipes does not affect the operation or safety of gas appliances; this activity is typically aesthetic and does not contribute to maintenance. Similarly, while installing extra heat shields can provide additional safety in certain contexts, it is not a standard practice for all gas appliances and is often unnecessary if the appliance and its installation conform to regulations and guidelines. Thus, regular service and inspections are the most comprehensive and critical aspect of maintaining gas appliances.