I have an old combi boiler at the moment so as far as I understand it I don't have a Y or S plan system.
I'm looking to have a Vaillant unvented cylinder and system boiler installed and wondered which was best Y or S plan? What are the pros and cons? Are there alternatives?
What does the Vaillant VR 65 control centre contribute? Is this just a box containing all the wiring?
I'm looking to have a Vaillant unvented cylinder and system boiler installed and wondered which was best Y or S plan? What are the pros and cons? Are there alternatives?
What does the Vaillant VR 65 control centre contribute? Is this just a box containing all the wiring?