We have a Baxi 105E Combi boiler - only around a year old. Whenever the heating comes on, after a few minutes it begins to whistle like a kettle. (like a kettle this noise increase gradually to a constant level) It seems to be emanating from (or around) the boiler somewhere, but here's the real mystery: it stops immediately as soon as you run a hot tap. Another symptom is that when you close the hot tap, there is a creaking noise then a light clunk from the boiler - this happens when and only when the heating is on. It also happens regardless of the whistling.
Any ideas of how we can solve this problem and get a good night's sleep?
Any ideas of how we can solve this problem and get a good night's sleep?