Good Sam Club Open Roads Forum: Hot water tank drain plug


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Gdetrailer

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Joined: 01/05/2007

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Posted: 08/26/21 11:50am

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bob213 wrote:

Bionic Man wrote:

Open the vent on the hot water heater and your low point water drains. The water will then drain from the heater. Or at least mine does.

Draining thru the low point drain is a good way to get all that sediment in the tank into your water lines. I would avoid that method.

Impossible to unless someone has misplumbed the tank and reversed the inlet for the outlet..

[image]

Cold water inlet is on the bottom of the tank.

Hot water outlet takes the hottest water from the top of the tank.

Low drain points will never be able to siphon enough water from the hot water tank to ever get any "solids" like sand, dirt, scale.

I would also caution anyone that attempts to only siphon without pulling the drain plug.. Since the hot water outlet is very high in the tank, it will not siphon enough water out of the tank for freeze protection as most RVs will have a check valve on the cold water inlet which is there to prevent hot water from being siphoned from the tank via the cold water inlet..

Be lazy at your own risk!

Takes only a couple of seconds to remove the plug in a Attwood using a socket and wrench. Don't be lazy and fool hardy, it may end up biting you in the behind the next camping season.

spoon059

Just north of D.C.

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Joined: 10/03/2010

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Posted: 08/27/21 01:32pm

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Bionic Man wrote:

Open the vent on the hot water heater and your low point water drains. The water will then drain from the heater. Or at least mine does.

Not sure why so many people want to reinvent the wheel. This is how I do it as well. Didn't cost me a penny.

Any sediment that might be in the tank would be flushed every few trips, as I drain the water heater every few trips. Also, when I drain my low points, I get several gallons of HOT water (steaming hot) that drains from by low point. That's more than what would just be in the line. Its clearly draining the majority of the water heater.

Been doing this for 11 years. Never had any issue with a split water heater tank.

2015 Ram CTD
2015 Jayco 29QBS

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