The answer to 'how to maintain water heater' is to regularly inspect, flush, and perform basic maintenance on your water heater. This will help extend its lifespan and ensure it operates safely and efficiently.
Start by visually inspecting the water heater for any signs of leaks or damage. Check the temperature and pressure relief valve to make sure it's working properly. Flush the tank every 6-12 months to remove sediment buildup, which can reduce efficiency and lifespan. You should also clean the anode rod annually and replace it if it's heavily corroded. If you're not comfortable performing these tasks, it's best to hire a professional HVAC technician to service your water heater.