Forum Discussion

Rmack1's avatar
Rmack1
Explorer
Jan 09, 2015

draining hot water heaters.

I have a Suburban hot water heater, and recently replaced the anode rod, draining the tank.

The general consensus is that that is the way to store it. I can see why this would be important to you guys in the north east this year. Deep freezing can mess things up if not drained.

But I live in the South West. It rarely gets below freezing in the storage yard I keep my TT in, so I just open the faucets like I was advised by the local RV center, and keep my hot water heater tank full. It ate up my anode rods, of course, but that's what they're for.

My question; will the little bit of water around the drain on my Suburban rust? the anode rod is now not submerged in water, but is high and dry. But I'm sure there is a little bit of moisture at the bottom of the tank.

The main spot of a rust problem on my whole unit is that hot water heater drain. It rusts at an accelerated rate.

So, bottom line question; wouldn't I have been better off just leaving that tank full of water, and changing the anode rods regularly?
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    I have an atwood. but if you are not using it, Leave it empty.. Though it does not OFTEN get below freezing,, One night, if it happens early enough in the evening, is all it takes.. leave it empty.

    Will the little bit cause rust.. Good question you can blow it out if you like to get more of the water out.

    A friend is out of the RV park for a month or two,, I just blew his water heater out for him (Two days before a freeze) Some days your timing is great.
  • Believe me, if you ever leave water with high sulphide content in a Suburban water heater for any length of time, you will never do it again.

    Nasty ain't the word for it.
  • Not worried about anode rods because they are inexpensive.
    But, problem with leaving water in the tank for long periods of storage is that the water can get real NASTY.

    If we aren't going to use our rig within the next month, we drain it. Simple and quick to do.
  • My water heater is empty, too. We'll see.


    Bottom is rounded, hard to get all water out below the drain hole. I always clean mine out with one of these after draining and before put into use. I just don't want to take the chance of specks of rust messing up aerators.

    In your neck of the woods maybe evaporation would get all water out?

    "Flush accumulated sediment from your water heater tank to prevent corrosion, restore heating efficiency and extend water heater life".


    http://www.campingworld.com/shopping/item/water-heater-tank-rinser/49070
  • 2oldman wrote:
    You have a water heater. I leave mine empty.


    My water heater is empty, too. We'll see.

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