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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: May 22, 2025
Topics: 2 / Replies: 349
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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 ☺️

4 months ago
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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....

4 months ago
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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!

4 months ago
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

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

4 months ago
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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!

4 months ago
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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...

4 months ago
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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.

4 months ago
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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...

4 months ago
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RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

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

4 months ago
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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...

4 months ago
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RE: Is My Midea Heat Pump Inherently Defective?

Contributing to the comments about compensation by overshoot in normal operation The first is de-frosting at virtually full capacity on our Vaillant...

4 months ago
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RE: Can you work an ASHP too hard?

100% is a good level! Our system is a 7kW Vaillant designed for 42C flow temp at -2C external. That gives it some flow in hand for demanding tempera...

4 months ago
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