11 Best Tips How To Drain a Hot Water Heater

0 Comments

Learn How To Drain A Hot Water Heater

In this post I will teach you the simple way how to drain a hot water heater. I recommend doing this once a year to keep your hot water heater running efficiently in addition to removing contaminants and minerals that may have accumulated throughout the year.

#1 Shut Down

I always begin by shutting the gas or the electric of to the hot water heater.

  • Electric Heaters: Turn the electric breaker off.
  • Gas Heaters: Follow your hot water heater manufacturer spec to turn off the gas.

#2 Water Supply

Next you want to turn the hot water heater supply valve to the OFF position.

#3 Connect Hose

Connect a hose to the boiler drain at the bottom of the heater. You can run the hose to any floor drain, sump pump or simply to the outside. NOTE: Not all hoses are made for hot water, verify with the manufacturer.

Water Heater Drain

Water Heater Drain

#4 Open Drain Valve

Open the boiler drain at the bottom of the water heater.

#5 Relieve The Vacuum

To allow a constant flow of water you can open the P&T valve located on the water heater or you can open the hot side to any faucet in your home connected to the hot water heater. Leave the faucet on until the hot water heater is completely drained.

#6 PRO TIP – Flushing

After your hot water heater has completely drained I like to flush it. While leaving the drain open turn the hot water heater supply valve on for 10 seconds and allow to drain. Do this as many times as it takes until you no longer see sediment out of your hose and the water runs clear.

NOTE: This will help prevent sediment and minerals to clog your toilets and faucets once you refill your tank.

#7 Close The Water Heater Valve

Close the boiler drain valve and remove you hose.

#8 Turn On The Water Supply Valve

Turn the hot water heater cold water valve to the ON position.

#9 Filling Up The Tank

If you opened your P&T valve to relieve the vacuum keep a close eye and ear on it. Once the water level gets to that point it will come out very quickly, so you will want to stay close to shut it off.

NOTE: It is common and completely normal to here air coming from either the P&T valve or the faucet.

#10 Turn On The Gas Or Electric

  • Electric Heaters: Turn the electric breaker back on.
  • Gas Heaters: Follow your hot water heater manufacturer spec to relight the pilot light.

#11 Purge & Test

After about 15-30 you should start getting hot water from all your faucets. I like to go to each fixture in the home (i.e. faucets, toilets, showers, etc.) and run the hot water. This accomplishes 2 things; 1st it removes any trapped air in the lines (which can startle someone if not expecting it). 2nd makes sure there the hot water works everywhere.

 

I hope this post was helpful learning how to drain a hot water heater. If you have any questions, comments and/or concerns please feel free to contact me and I will respond.

 

Categories:

About John Verhoff

I am a creator, inventor, father and husband. Among others, I have owned a home service type business including plumbing for over 19 years.

Leave a Reply

Your email address will not be published. Required fields are marked *