The answer to 'water heater maintenance' is that regular maintenance is essential to ensure your water heater operates efficiently and safely. This includes flushing the tank, checking the anode rod, and inspecting the pressure relief valve.
Flushing the tank should be done annually to remove sediment buildup, which can reduce efficiency and lifespan. The anode rod should be inspected every 2-3 years and replaced if heavily corroded. The pressure relief valve should be tested periodically to ensure it is functioning properly and can release excess pressure if needed.