Hello Steve. This is the exact video I’ve been looking for. I’ve had this problem ever since my boiler was installed three years ago. Another issue I have is that the radiator under my living room window, which is about eight feet long, keeps making banging noises every time the water goes through it. The contractor says it’s due to the rad expanding and that there’s nothing that can be done. Do you have any thoughts on this. Thanks so much
Good Morning David! In my experience, expansion and contraction doesn't result in loud noises, but air trapped in the rad does. Whenever my radiators make noise, I open the air bleed valve at the top, left the air out, then close the valve again. That'll give me quiet performance for a year or two. I hope this helps. Bye for now, Steve
