Can I have power shower?

[MoonMan2]

I have a low pressure water system with a cold water tank (cistern) in loft and a hot water tank (cylinder) in airing cupboard.

A website tells me that if I want power shower:

"By choosing a booster pump you will need to check that the size of your water cylinders are sufficient enough and that they have a good recovery rate to withstand a larger demand for water "

How exactly do I do this?

 

[kevplumb]

check the size of the header tank in the loft they usually have the capacity on a label

check cylinder size again there is usually a label on it