I currently own this boiler, but up until now have been using an electric shower. It’s pretty pathetic tbh and I’d like to convert to a thermostatic shower. I’ve just run a bath to see how much hot water I’m getting. The answer is I get about 8cm before it goes colder, which is roughly 60 litres in our bath. The water temperature is good to use without adding any cold
(The water side is on all the time and the heating side is off)
This seems very little. Do you think there is a problem with the boiler or is this all I can expect?