"doobydoobydo" wrote in message
...
boiler has started not fireing up intermittedly, pilot light works.

Boiler is 16 years old
'Regular boiler' ie not combi
Cylinder
Tank in loft two I think one smaller .overflow??
power shower
chalky water (limescale)
Don't know about water pressure we are in felpham bognor regis West sussex
9 rads
Bungalow
No trv attached at mo

Go for a high flow hot water combi. Test the mains water pressure. time a
bucket from the cold mains tap. What is the litres per minute.