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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: Apr 25, 2026
Profile Activity
Topics: 4 / Replies: 515
AllTopicsReplies
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 ...

1 year 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...

1 year 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...

1 year 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

1 year 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

1 year 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...

1 year ago
Forum
Government Schemes, Regulations, Training, 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?

1 year 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. ...

1 year 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...

1 year 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...

1 year ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: ASHP and how it should run and potential kw consumption?

You can help things by putting the DHW on to a timed operation so it’s only topping up before you need it, not continuously, then your system can be u...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best temperature wave form for best economy and efficiency .

The exact waveform does matter too much it’s the average that matters. I can’t read the scale too well but both shapes look reasonable. There’s no ne...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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