Casita water tank change out? - Fiberglass RV
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Old 09-08-2022, 10:15 PM   #1
Junior Member
Name: Dave
Trailer: 2018 Casita 17' Spirit Deluxe
Posts: 15
Casita water tank change out?

Has anyone changed out the 16 gallon fresh water tank to the 23 gallon tank and if so, how hard was it to do.


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Old 09-09-2022, 04:11 AM   #2
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Trailer: Boler 13 ft / Casita FD
Posts: 2,033
The fresh water tanks were already taken out of my Casita when I got it and I liked having the space for storage, so I hung an 21 gal. tank under the floor in rear between frame using "C" clamps. 3/8 threaded rod and 1-1/2 angle stock. It doesn't hang any lower then the Gray tank and was easy to do.
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Old 09-09-2022, 05:28 PM   #3
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Name: Joel
Trailer: Casita SD
Posts: 129
I would guess that changing out the existing tank would involve temporarily removing the fiberglass shell under the bench seat cushions.
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Old 09-14-2022, 09:44 AM   #4
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Name: Jason
Trailer: Currently Shopping - Past owner of 2004 DSDP.
Posts: 21
You need to remove the rear fiberglass (door side) seat, it has screws along the back side, two coming in under the sink area and a few along the floor. If you purchase the tank from Casita or Little house customs it should be as simple as removing the old tank, moving the two floor supports / anchors, getting a larger metal clamp and placing it back in place. Fairly easy job. The fill and connections should all line up.
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Old 09-14-2022, 10:59 AM   #5
Name: Daniel
Trailer: 1994 Casita 16 Liberty
Posts: 63
water tank

My 1994 Casita had a 10 gallon fresh water tank. Replaced with a 25 gallon fresh water tank. Very easy as I lifted out the fiberglass bench and found lots of room for the 25 gallon fresh water tank. Sure do enjoy the extra water,
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