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humming

A hum is a sound made by producing a wordless tone with the mouth closed, forcing the sound to emerge from the nose. To hum is to produce such a sound, often with a melody. It is also associated with thoughtful absorption, 'hmm'.
A hum has a particular timbre (or sound quality), usually a monotone or with slightly varying tones. There are other similar sounds not produced by human singing that are also called hums, as the sound produced by machinery in operation, such as a microwave, or by an insect in flight. The hummingbird was named for the sound that bird makes in flight which sounds like a hum.

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  1. C

    Humming vibrating pipes near mains inlet valve

    Not on the hot but whenever a cold tap is ran in the bathrooms or toilet flushed the two cold water pipes reverberate round the house. The cold mains and the balanced cold. We changed the water inlet valve with PRV last week but the problem has come back quickly. Is the street pressure too...
  2. C

    Humming from unvented cylinder

    Hopefully someone can point me in the right direction. Before I start I am G3 qualified. As per usual I was asked to rectify a leak on a combination valve. I installed a like for like 3.5 bar valve, all good, however I I checked pressure in exp vessel to find no pressure at all (Never been...
  3. M

    Help with humming pipes with communal boiler

    Hi all, I live in an old building with a communal boiler and central heating. The communal boiler is located in a small plant room and serves 8 appartments. The pipes are making a humming noise and 2 radiators make a constant whistling noise. The management company tells me that the pipes and...
  4. Y

    Inexplicable humming (am I going crazy?)

    Hi All! Bought a house recently, and we have been having the most frustrating issue with a very loud humming noise that intermittently comes and goes in our pipework. Have had a plumber around to check the issue to no avail so far, unfortunately. We have an Ideal Logic+ c35 combi boiler. System...
  5. M

    Humming noise when hot water tap is on.

    When I turn on my hot water taps anywhere in the house, after about half a minute there is a humming noise all around the house. When I turn on the cold tap, the noise stops. Any ideas what is causing this humming noise?? Thanks Michael.
  6. T

    Humming noise constantly

    A constant ‘hum’ noise has started and I’ve traced it back to the water meter in the street in front of the house. The noise internally can be heard from the stopcock and you can feel a bit of vibration in the pipe work around the stopcock. The dials on the water meter are dead still when there...
  7. R

    Worcester Heatslave humming

    Heatslave 20/25 subtle humming from boiler new motor fitted fully serviced recently, it's the sort of sound you would get from a HV transformer that sort of hum deep and annoying, nothing to do with circulation pump it's still there with the circulation pump off. I guess it only leaves the oil...
  8. S

    Humming noise all around house

    Hi I'm hoping someone can help with a problem I've had since November 20. I got a new circuit board fitted to my gas boiler and since then have had a loud droning/humming noise all around the house. Had engineer back 3 times and he says nothing wrong. Called water suppliers and they have checked...
  9. F

    Humming/vibrating pipes when no water is being used

    Hi Just wondering if anyone could help me please. I am getting loud vibrating/humming noises in the house when I’m not using any water. It seems to be coming from the cold feed and it’s vibrating through the house and you can hear it vibrating the boiler. I felt the pipe where the stop tap...
  10. Y

    New combination PRV is humming loudly

    Hi, I have just replaced the combination pressure reducing valve on the inlet to my unvented got water cylinder. The new valve is exactly the same model as the old valve, but hums very loudly when any hot tap is turned on. The only time there is no humming is when a tap is fully open. You can...
  11. M

    worcester 42cdi erp continuous humming noise

    I have a 2 year old 42cdi located in my garage which has been fine up to now. my wife pointed out recently that there is a continuous humming noise coming from it even when not heating. I tried switching eco off and on but no change when I switched it on to summer mode recently it goes away i...
  12. C

    Baxi solo 15HE humming noise issue

    Hi guys Was working on the above boiler on Monday, with customer initially calling to say the boiler has been sounding like ‘a small aeroplane taking off’ ...INTERMITTENTLY! On initial inspection, it didn’t perform the loud humming noise as described by the customer. I gave the boiler a full...
  13. S

    Main HE12 leak and humming

    check this out. This is what you can see through the pilot light hole when the boiler humms. It's so loud and shuts itself down when it happens I have to reset it. Also it's leaking from the heat exchanger.
  14. M

    Humming sound in pipes after heating goes off

    Hi all New boiler installed a couple of months ago, just starting to use the central heating with it. Previously had a Baxi back boiler; the new one is a system boiler, sited in loft. Pipes are initially all quiet after the heating goes off at 8.30PM, but some hours later - around...
  15. S

    Really loud humming sound from "main Boiler"

    Happens about 20 mins after heating is turned on. attached is a video of it happening.
  16. C

    Humming pipes ???

    Hi Please help. Over the last couple of weeks when we turn on tap there is a high pitched humming sound. Its not banging as youd get with water hammer but can feel the pipe work very slightly vibrating. Did think it was the inlet on the toilet pan so replaced that but made no difference. If I...
  17. M

    Vokera Unica 32HE humming problem HELP!!

    I have went to a customers house twice this week. They are complaining about there vokera unica 32HE making a loud humming noise during the night and waking them. I have not witnessed this the two times i have been on site and they said it doesnt happen during the day when they have the boiler...
  18. M

    Vokera Unica 32HE humming problem HELP!!

    I have went to a customers house twice this week. They are complaining about there vokera unica 32HE making a loud humming noise during the night and waking them. I have not witnessed this the two times i have been on site and they said it doesnt happen during the day when they have the boiler...
  19. T

    Glow worm betacom 30c humming sound

    I got a betacom 30c in my own house and this week it's started humming/whiring sound when hot water is drawn off, this sound is intermittent. The temperature is fluctuating also. We done the install about 5 years ago and maintained with inhibitor f1 yearly. My mate done the boiler as I am not gs...
  20. J

    Potterton HE Plus humming noise

    My potterton he plus combined boiler is about 6/7 years old and recently when the central heating is on for a while the boiler would randomly start making a rather loud humming noise. It's not a metallic noise just a humming noise like noise pump or fan kind of noise. A bit like an example of a...
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