We have a 15-year-old shower which doesn't seem to graduate the temperature very well. It's a fairly basic flash-heater type, with just a single cold mains input.
This time of year it seems very hard to control - it's either too hot or if you turn it down just a bit, it doesn't heat at all. In the winter when the feed is colder, it's a bit more controllable, but obviously the pressure drops quite a lot as it needs more time to heat.
I haven't taken it apart for a look, but I'm wondering if there are any serviceable parts in such showers, or whether there's any routine cleaning/maintenance I can try on it?
This time of year it seems very hard to control - it's either too hot or if you turn it down just a bit, it doesn't heat at all. In the winter when the feed is colder, it's a bit more controllable, but obviously the pressure drops quite a lot as it needs more time to heat.
I haven't taken it apart for a look, but I'm wondering if there are any serviceable parts in such showers, or whether there's any routine cleaning/maintenance I can try on it?