Forum Discussion

daddyfarlessa's avatar
Jun 11, 2016

Larger fresh water tank ?

I own a 2014 Airstream International Serenity (23')
I posted this query on an 'Airstream Forum' website, but as of yet have received no reply.

My trailer has a 39 gallon fresh water tank & I'm inquiring about installing a larger tank.

fyi - all the Airstream holding tanks are inclosed in a sheet metal container (which are heated to prevent liquids from freezing in cold weather).

Any info/referral will help.

Thanx ~Mark
  • SoundGuy wrote:
    That's the approach I've used and now essentially have an "endless" supply of fresh water. :B


    I find that answer intriguing......but some details are necessary to make it useful.

    I think that replacing the existing tank is NOT a practical thing to do in pretty much all makes and models but if you can find some storage space ON THE FLOOR that is difficult to use, that might be a good place to install a secondary tank and use a transfer pump to get it into the main tank.

    In my unit, there is space under the fold down couch and under the bed that might be good locations.

    Keep in mind that every extra gallon you have is an extra 8 pounds of dead weight you are hauling around. 50 gallons = 450 pounds.
  • JMO, but this is far more work than I'd ever want to put into a mod like this, especially considering that no matter how large the FW tank is it'll never be "enough" and chances are you'll have to have an efficient method of refilling it anyway. That's what I'd put my effort into - fresh water transfer i.e. a means to collect more fresh water as you need it without involving the trailer at all and a means to efficiently transfer that water into the trailer's FW holding tank, whatever size it may be. That's the approach I've used and now essentially have an "endless" supply of fresh water. :B