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Yes, flushing washes out the sediment that would otherwise coat heating elements and build up along the tank walls. Clearing that gunk keeps water heating evenly, lowers energy use, and helps the unit last longer. In short, a quick flush keeps your heater running at peak efficiency instead of fighting through layers of mineral sludge.

Plan on a full flush once a year. If you live with hard water—or hear rumbling inside the tank—step it up to twice yearly. Sticking to that schedule scrubs out sediment, keeps hot water flowing, and shields the heater from premature wear. Regular flushing also wards off surprise repair bills and helps the unit run more efficiently day-to-day.

Listen and look for clues: popping or banging sounds, cloudy or rusty water, lukewarm showers, moisture around the drain valve, or a sudden spike in energy bills. Any of these signals point to sediment hogging space inside the tank and choking heat transfer. A thorough flush clears the buildup, restores steady temperatures, and helps the heater run smoothly for years to come.