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Judith
@judith
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Prominent Member
Joined: Nov 28, 2023
Last seen: Sep 9, 2025
Profile Activity
Topics: 3 / Replies: 386
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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...

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

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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 ...

8 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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

8 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

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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

8 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...

8 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
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?

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

Hi again @jaynieq I hope your daily consumption has gone down to the point where you can see that it will average out the horrible very cold days. ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Can I check I’ve understood the arguments here? Large heat pumps are more efficient for some manufacturer’s ranges, I accept that. And if the contro...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy

Ofgem is consulting about their current work programme so perhaps we should tell them to change this system within their work plan. “Shaping a retai...

8 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
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