HVAC Questions? Ask an HVAC Expert for Answers ASAP
Good morning, sorry for the delay in responding.
There a many valves on the boiler, pressure release, gas flow, diverter valves etc.
By in large most cost between £30-50, but some can cost £150.
What are the symptom of your issue, and do you know if the valve is located inside or outside of the boiler as that will greatly assist me working out which valve you need to replace.