0 votes
by (141k points)

Draining a water heater is a fairly straightforward process, but it's important to follow the steps carefully to avoid scalding yourself or damaging the heater. Here's a general guide:

1 Answer

0 votes
by (141k points)
Best answer

Safety Precautions:

  • Turn off the gas or electric supply to the water heater. This is usually located near the base of the unit.
  • Allow the water heater to cool down completely. Hot water can cause serious burns.

Draining the Tank:

  1. Shut off the cold water supply valve: Locate the valve at the top of the heater, typically with a blue handle. Turn the handle clockwise until it stops.
  2. Attach a garden hose to the drain valve: The drain valve is near the bottom of the tank. Most valves will accept a standard garden hose.
  3. Open a hot water tap: This will help relieve pressure and allow for faster draining. Preferably, open a tap on the floor above the heater.
  4. Open the drain valve: Use a screwdriver or lever handle, depending on your valve type. Be prepared for water to rush out.
  5. Drain the tank: The water may initially be cloudy or rusty due to sediment buildup. Let it drain completely. You can flush the tank by briefly opening the cold water supply valve a few times during this process.

Refilling and Restarting:

  1. Close the drain valve and remove the hose: Tighten the valve securely to prevent leaks.
  2. Turn on the cold water supply valve: The tank will begin to fill.
  3. Close the hot water tap you opened earlier: Once only cold water flows, shut off the tap.
  4. Turn on the gas or electric supply: Depending on your heater type, relight the pilot light or turn the breaker back on.

Additional Tips:

  • Consult your water heater's manual for specific instructions, as there may be variations depending on the model.
  • Consider safety glasses and gloves when working on your water heater.
  • Be prepared for a significant amount of water to drain from the tank. It's advisable to have a drain or a large container ready to collect the water.
  • If you're uncomfortable draining the water heater yourself, consider calling a licensed plumber for assistance.

For a more visual guide, you can also find several video tutorials on draining water heaters online YouTube: search for "drain water heater".

Welcome to How, where you can ask questions and receive answers from other members of the community.