Quote:
Originally Posted by retiredguy123
It is difficult to determine how much sediment you can remove by opening the drain valve. But, it seems to me that you will get a similar flushing action by just turning on the hot water faucets full blast in your house, especially near the water tank. The hot water pipe existing the water heater is actually larger than the drain valve. If you really want to flush out the tank, you need a larger drain valve.
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Take a small scrap of window screen. Place it at the end of the hose (when draining a water heater). It’ll show the sediment. The issue with flushing using faucets is that they have aerators, which are notorious for trapping sediment. Of course you can always remove the aerators and flush them. Just throwing this info out for homeowners.