Heating systems can seem very complicated but the basics are simple..

THE MAIN QUESTION TO ASK YOURSELF.

Do you have a cylinder in a cupboard and or tanks in the attic if so you a CONVENTIONAL OR OPEN VENTED system.

if NOT THEN YOU MOST LIKELY HAVE A COMBI BOILER

This is a conventional/open vented system

 

 

 

This is a combi boiler