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Air source heat pumps and noise

Mars · 2023-12-09T08:32:14Z

I’m putting together a short video to show how much noise air source heat pumps actually make. If you’d like participate, please download a decibel measuring app to your phone.Here’s a great free one for iPhones. Then record a video of your heat pump using the aforementioned app standing 3-5 metres away. This will show your heat pump in operation with the corresponding dB values. Then simply use wetransfer.com to send me your video to editor@renewableheatinghub.co.uk and be sure to include your make and model.

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Air Source Heat Pumps (ASHPs)

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Toodles

(@toodles)

Famed Member Contributor

Joined: 4 years ago

Posts: 2694

07/01/2024 6:25 pm

@tim441 I’ll endeavour to make a new recording tomorrow now the incessant rains have gone on leave and the temperature is in the region of 2 degrees C. Being a weekday, the traffic is likely to be ‘normal’ so the readings may well say more about the ambient noise than the sound emanating from the ASHP. Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

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Toodles

(@toodles)

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07/01/2024 6:48 pm

@derek-m Derek, unless one operative with one set of measuring instruments visits each site and carries out a strict routine to take all these measurements using the same weighting scheme, you are not likely to be able to put together such an idealistic and meaningful survey. Even such measurements might need repeating perhaps three times and the average of these be used. I took it that what Mars was asking for was a ‘snapshot’ of the nature of the sound relative to other prevailing conditions - if it is to be a scientifically credible and statistically meaningful comparison and statement of ‘Noise’ heard coming from a range of heat pumps, then I feel you are being more ambitious than some of us might be prepared to be! (I include myself in this as being a retired audio technician / sound engineer, I know just how myriad factors can influence such measurements); unless all these factors are controlled or removed, I feel results would still be subject to far too many variations - never mind interpretations. I know you wish to strive for accuracy and credibility, however, practicalities might mean this is extremely difficult to achieve. I think a set of standard tests in a controlled environment with a range of manufacture’s units might be the way to go for consistency but look what happened when measurements were taken of C02 emissions in certain automobiles. Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

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Toodles

(@toodles)

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08/01/2024 11:50 am

I made a new recording this morning when the OAT was 1.6 degrees C and the LWT was shown by Onecta app as 45 degrees C. I have not forwarded this for as I explained to Mars, the readings are almost identical and with the same amount of variation over a few seconds as when a recording was made at about 8 degrees C. I feel that I am actually registering the ambient level that is much influenced by local traffic conditions. The noise level does not appear to change even with the pump switched off; I appreciate that the ASHP does contribute to the overall level, but, has very little impact on the readings for the average level varies by some 4 dB or more from moment to moment - so the average is all I can compare! (A thought, perhaps if we have heavy snow and minus temperatures one day, traffic will stop and I can get a more meaningful reading!) Regards,Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

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Derek M

(@derek-m)

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08/01/2024 12:39 pm

Have you considered buying a load of cones and blocking off all the local roads. 😋

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Toodles

(@toodles)

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08/01/2024 12:45 pm

Buying? Wash your mouth out! I thought that procurement of cones was either by nicking them or ny being married to an MP. and securing a contract to supply! Regards, Toodles.

Toodles, heats his home with cold draughts and cooks food with magnets.

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DannyMoss23

(@dannymoss23)

Eminent Member Member

Joined: 2 years ago

Posts: 26

09/01/2024 10:27 am

Good morning all, new member - I have sent you my video this morning.....there are some background builders spikes but the levels are sticking around high 40db's - I was 3 meters away and the AOT is 2 degrees and we're maintaining a 19 degree inside temp. Db Seems high!

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Mars

(@editor)

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Joined: 5 years ago

Posts: 4475

Topic starter 09/01/2024 10:33 am

@dannymoss23, thanks for sending and I've added it to the next video. Will need five more before that video goes live. What the make and model please @dannymoss23?

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DannyMoss23

(@dannymoss23)

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Joined: 2 years ago

Posts: 26

09/01/2024 10:39 am

@editor Mitsubishi ecodan 11KW R32

👍

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Persephone

(@persephone)

Trusted Member Member

Joined: 2 years ago

Posts: 66

09/01/2024 11:31 pm

The noise of my neighbour's Heat Pump is killing me. Are there any good APPs for recording and checking the noise.

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JamesPa

(@jamespa)

Illustrious Member Moderator

Joined: 3 years ago

Posts: 4634

10/01/2024 12:22 am

There are several noise meter apps and one in particular for recording nuisance, which many local authorities will recommend you use. Can't remember the name though.

Edit - found it https://noisenuisance.org/noise-app/

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.

👍

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Mars

(@editor)

Illustrious Member Admin

Joined: 5 years ago

Posts: 4475

Topic starter 16/05/2024 8:30 am

I’m trying source some heat pump videos in rural or garden settings to use as b roll. If you’re interested, please DM me. Ideally, I need them shot creatively, in 4K, landscape/horizontal orientation.

Sound is not important and the heat pump does not have be on or running.

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