How can I effectively clean my hot water heater to ensure optimal performance and longevity?

To effectively clean your hot water heater for optimal performance and longevity, you can start by turning off the power and water supply to the heater. Drain the tank to remove sediment buildup, then flush it with clean water. Inspect and replace the anode rod if necessary. Finally, consider insulating the tank to improve efficiency. Regular maintenance like this can help your hot water heater work better and last longer.