Step 5 · Flush Out Stubborn Sediment

This is the step most people slow down on. Take it one move at a time — there’s no rush, and you can rewind the clip as many times as you need.

Simply draining the tank often leaves the heaviest sediment behind. To effectively remove it, leave the drain valve open and the hose attached. Briefly open the cold water supply valve for 15-20 seconds to blast water into the tank, which will stir up the sediment at the bottom. Then turn the cold water off and let it drain out. Repeat this flushing process 3-5 times, or until the water running from the hose is clear and free of particles.