"Alan (BigAl)" wrote in message
...


Am I worrying needlessly? Am I missing something? Does anyone have any
advice for me please?

You usually have plenty of pressure with a combi.
That doesn't mean you have plenty of flow.
The combi can only heat a limited number of litres per minute.
Typically you can get about 8-15 litres per minute.
This may be enough if you have a suitable shower head.
Don't expect it to be enough if you imagine having a 30cm square soaker
hanging from the ceiling.
Fit a thermostatic mixer or you will find the temp changes when someone
turns a tap on, etc.