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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: 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...

8 months 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...

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

I suspect it’s not reflective to audio waves and rough surface matting is available too. Patterned door mat perhaps ☺️

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Aira Heat Pump: Stylish Scandinavian Heating

With a temperature difference on flow and return of 8C is the Aira able to operate comfortably with that? or are they using hydraulic separation I.e....

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Adding data centre electricity costs to domestic energy bills?

That is unfortunately what is happening in California since it has lots of sun. But DESNZ can’t learn from others’ mistakes it has to makes its own!

8 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

@jamespa nice analysis have you considered something like or neoprene?

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Adding data centre electricity costs to domestic energy bills?

Isn’t there a consultation on ofgem in process about now? And since I missed this gem I feel another letter to my MP coming on!

8 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

Our system is open no hydraulic separation. The volume is high (18 Large K2 and can’t be bothered to add it up) but the installer still added a 26L in...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Pipework insulation

If the insulation isn’t wet you can over-cover it. It’s nearly always the more the better. 2cm wall thickness would be a good start.

8 months ago
Forum
Insulation
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RE: Adding data centre electricity costs to domestic energy bills?

Unfortunately I missed this deadline since life activities got in the way. That’s how they get away with such outrageous acts the poor victims only fi...

8 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

@sunandair you certainly seem to understand it now! Congratulations.

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Can you work an ASHP too hard?

@simonwhiteley ours in practice correlates best with the peak usage day. Depending on your actual values the lowest heat loss prediction by spreadshee...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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