[taylored]

anyone used one of them off ebay? going to try to work out if they would work for us w/c as my dad is a gas fitter, any help please lads.

[Cedaronics]

How small is the tank you are thinking of heating?

[taylored]

350l tank, not looking for very hot water, just warm so i can still work.

[d s windowcleaning]

it wont work

[♠Winp®oClean♠]

it wont work

I'd agree with that. 12v isn't going to create enough heat that will make any difference to such a volume of water.

I've got a 3KW immersion in mine & that takes 4 hours to heat 400ltrs.

[BORBRYCE]

12 volt will be useless mate in that size tank. You need to think much bigger.

[windiewasher]

anyone used one of them off ebay? going to try to work out if they would work for us w/c as my dad is a gas fitter, any help please lads.

Winter,always have a trolley,backpack and a few bottles inside ready for frosty mornings and then the tank will thaw out before you need to start using it!