My plumber recommends method 1 below every six months to keep sediment from accumulating in my new gas water heater tank. Others say this only stirs up sediment because the tank fills from the bottom. What maintenance procedure is better, and why?Method 1 1. Put gas valve in vacation mode. 2. Attach hose to drain valve and place other end in drain or outside. 3. Open drain valve and allow to drain (my plumber said until I get cold water, but others say until outflow is clear, which could be just a few gallons). 4. Close drain valve, remove hose and turn gas valve back to desired temperature range.Method 2 1. Turn the gas valve to vacation mode. 2. Run faucets until water flows cool or allow time for tank to cool (to prevent contraction when refilling). 3. Close the cold water inlet valve. 4. Attach hose to drain valve and place other end in drain or outside. 5. Open pressure relief valve and all hot water faucets. 6. Open drain valve until tank has drained. 7. Close pressure relief valve. 8. Open cold water inlet valve. 9. Close drain valve. 10. Once hissing noise has stopped and clear water is flowing from faucets close the faucets. 11. Turn gas valve back to desired heat range. via /r/DIY https://ift.tt/2O6rAdn
