An annual boiler service feels much like a health check-up for your heating system, and it’s crucial for safety and efficiency. When my gas engineer visited, they performed a thorough inspection and cleaning of the boiler’s components, ensuring no parts were in disrepair or needed replacement. The combustion, or gas supply, was checked to ensure there aren’t any dangerous leaks. I was surprised by how much sediment buildup the engineer found—it could have significantly hampered efficiency or even led to a malfunction! Testing for carbon monoxide leaks was another vital aspect of the inspection. Since then, I’ve purchased a carbon monoxide detector for extra peace of mind. For a comprehensive overview, you might want to look at this link. Before I forget, if your boiler is on a warranty, staying on top of annual services is usually a requirement to keep that warranty valid.