HW tank as a Contact tank?

[JoeJee]

I do HVAC and Plumbing. My neighbor called and asked for if we had a new HW tank that was bad (b/c of COVID we haven’t been sending them back just scrapping them). I asked why and he said to replace his chemical contact tank... Is this something people actually do? I thought contact tanks had baffles in them but he said not all do.

 

[LLigetfa]

The inside of a contact tank is a corrosive environment so I would not expect a bad HWT to last very long. For that reason, most contact tanks are composite plastic/fiberglass.

 

[Sponsor]

 

[JoeJee]

The inside of a contact tank is a corrosive environment so I would not expect a bad HWT to last very long. For that reason, most contact tanks are composite plastic/fiberglass.

some of the bad ones are from a short that burnt up electronics or plugged heat exchanger and the like but it costs to much to repair vs a new unit; the tank itself may still intact and useable. I’ll let him know it might not hold up to it but he will probably use a HW tank anyways. He needed a 30 gal b/c of size restrictions but all we have are 40-50.

 

[LLigetfa]

I thought contact tanks had baffles in them but he said not all do.

Some do have baffles, some don't.
https://www.flexconind.com/products/flexwave/mix-master/

The FLS/FLU has flexible options and can be used as a contact tank.
https://www.flexconind.com/products/well-tanks/flex-lite-fls-and-flu-well-tanks/