Step 4 · Drain the Tank

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

With the hose securely in place and a hot water faucet open, you can now open the drain valve on the water heater. Most plastic valves have a small slot that can be turned with a flathead screwdriver. Brass valves typically have a small handle you can turn by hand or with pliers. Turn the valve counter-clockwise to open it. The hot water and sediment will begin to flow out through the hose. Be patient, as a full 40- or 50-gallon tank can take 30 minutes or more to drain completely. You will hear the popping and crackling of sediment as it exits.