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Judith
@judith
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Prominent Member
Joined: Nov 28, 2023
Last seen: Jul 28, 2025
Profile Activity
Topics: 2 / Replies: 366
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

I’ve ‘invested’ a whole £3.99 for an audio spectrum analyser app. I’ve not captured all the apps features but this was our 7kW Vaillant running at 3.2...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Totally bewildered with my ECO4 heat pump installation

@dwynwen sadly you need to give them (yet another) chance to fix the installation or you will be prevented from from any further redress. Do you hav...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 R32 HPIDI17 performance in low temperatures

@davidmo6 When we had the gas boiler we used to set the house to 15C and it took a day to warm up on the last day of our holiday. Now with the heat pu...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

At last caught the ashp on its peak after de-icing. Drawing 3.2kW electrical power (about max seen) for a few minutes, the noise level was normal, no...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat Pump starting current

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat Pump starting current

The sampling rate of 5mins is not quite fast enough to see all the features. The ‘off’ period is ~7mins out of ~40. A real monitoring system would be ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

I’m using different systems to look at similar information but I’m afraid lwt is not one of them. On 3rd Jan we had mostly -ve temp rising to ~0...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat Pump starting current

@cathoderay & @transparent I have attempted to measure start up current spikes but don’t have high speed monitor devices. The monitor on our batte...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

Another thread about noise on Vaillant when running on max in posts 56 onwards. Several good ideas from the Urban Plumber

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

Googling noise with ashps and found this technical document/p> it identifies several noise related issues

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to make me regret installing a heat pump

@lucia I’ve started reading the work of Dieter Helms a centrist Oxford economics professor He did a cost of energy review for the government and ha...

7 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
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RE: ASHP and how it should run and potential kw consumption?

yes I realised later! It gets eye watering in cold snaps doesn’t it?

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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