How to Drain an Expansion Tank

What You'll Need
Garden hose

Most of the new water heater systems have an expansion tank and sometimes you may be required to drain the expansion tank. If you need to drain the expansion tank, you can do it yourself. Why spend money by calling a plumber when you can do the job. With this guide and the right tools you will be able to successfully drain the expansion tank.

Step 1 – Shut of the Power and Water Supply

Turn off the water supply to your water heater and also shut off the power supply. You will need to allow the heater to cool down before trying to drain the expansion tank.

Step 2 – Find the Drain Valve

Find the drain valve on the water heater, the valve is normally at the bottom of the tank.

 Step 3 – Connect the Hose

Connect the garden hose to the drain valve to drain the water into the drain outside. You can also place a large bucket directly under the drain valve to collect the water as it drains out.

Step 4 – Open the Drain Valve

Open the drain valve on the expansion tank. If the valve refuses to open, you can use the wrench to open it. Be careful as you use the wrench. Drain out the expansion tank.