Unvented ticket required to replace a 15l point of use water heater?

deano72_2

Is it a requirement to hold an unvented ticket to carry out a replacement of a unvented p.o.u 15l water heater like for like .
I know you need one to install 15l > from scratch, but what about to replace one, or service one... I'm suspecting the ans is yes, but can not find the ans I'm looking for .

Alex1983

I’m g3 qualified and I sure I remember anything 15l and under didn’t req the ticket. That’s how combi boilers get away without being under the g3 regs as the water content is under 15l.

deano72_2

I may stand corrected , but I think the the G3 regs have changed , anything below 15l you don't need G3 ticket, so the grey area is, does it mean a 14.9l is fine, and that a 15l now requires an unvented ticket !
I can't find where it says 15l and under its not required

Alex1983

Reading the g3 documents on the web it’s says at 3.19 about 15 and under, it’s not saying there about qualifications, it’s talking about meeting g3 requirements but I would think as there using the term 15 and under there you wouldn’t need to be g3 to install anything 15 and under.