Recent content by jenksy

Apparently, the fins on the exchanger are badly corroded, and this is why they have insisted upon it being changed.

I've had a maintenance contract with British gas for about 15 years, and when I reported the "knocking" problem, they sent out an engineer who condemned the boiler, pointing to a faulty heat exchanger. He then informed me that these units were no longer manufactured, and that it would be down...