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p osted this topic yesterday but didnt really explain properly. combi boiler has been making a humming whirring sound for ages had some one look at it and said it was a combination of the fan and pump. i asked if it would pack up on me and they said no could just be age and just started making...

soryy not a hhhhhhh noise a mmmmm noise like a hum hum hum sound

hi new to this but hope you can help a little. right to start of with ive got a glowworm compact 80p combi boiler, its about 6 years old now,everything working fine, hot water heating etc. but before xmas when the heating was on kept hearing a only way i can describe it sorry was like a mmmmmmmm...