If you have an electric heater and live here in the Villages, you really don't need to flush. You can if you want but not necessary. If you have a gas tank heater, then it pays to flush because over time sediment will accumulate at the bottom of the tank partially insulating the heat from the gas burner. Over time, your heater will be running more and more inefficient do to the buildup of sediment. As far as the sediment clogging the drain. Yes this can happen but you or your HVAC tech can unscrew the drain and replace it with a larger drain that won't clog. That said, if you have an old gas tank heater, leave it alone. If you have a relatively new gas tank heater then you can drain it once a year without any issues. If you have a whole house water filter, even better, less sediment.
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