Almost every drop of water you use goes through your water heater.
It sits there while it’s getting hot then it flows out when summoned.
Because unfiltered water is almost never perfectly clean, sediment tends to build up at the bottom of your water heater, reducing its efficiency.
Your water heater is an essential part of your home’s plumbing system, protect it by clearing all filters and flushing out these sediments once or twice per year.