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Mars
Mars
@editor
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Illustrious Member
Joined: Feb 11, 2021
Last seen: Aug 23, 2025
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Topics: 305 / Replies: 3084
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RE: Comparing COP (coefficient of performance)

@derek-m, good points. Because we have a bivalent system, we've had to install two separate metres that are exclusively connected to our heat pump so ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm Plus issues - circulation, efficiency and performance

@saz, so just to be clear, Vaillant have "fixed" the circulation pump (by getting rid of the sealant) and cleared your system out to nullify any block...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm Plus issues - circulation, efficiency and performance

I think that's @witchcraft.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Name and shame heat pump installers that have done shoddy work

@witchcraft, thanks for the update and I'm very interested to see how this all plays out.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Comparing COP (coefficient of performance)

I ran an experiment this week to see what our COP and electricity consumption would be like by varying flow rates (45C and 40C):/p> As the winter co...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm Plus issues - circulation, efficiency and performance

@saz, who was the original installer? Are you at liberty to reveal who it was?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm Plus issues - circulation, efficiency and performance

I’ve just reread the thread and you have had a Vaillant engineer come out. This engineer that just visited, were they from a completely new company?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm Plus issues - circulation, efficiency and performance

I can definitely empathise @saz - it’s very, very frustrating, even more so when things aren’t working and costing a lot of money to run. Have you ask...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Powerwall shipping delays

This is sadly very common with Powerwalls. I’ve heard of many people with delays that have been over 10 months. Part of the issue is that some install...

3 years ago
Forum
Energy Storage
Reply
RE: Undersized ASHPs & Unbelievable energy bills

Welcome to the forums @howiewsl. In addition to the relevant questions raised by @robl, can you please let us know the approximate square footage of y...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Coffee machine that keeps tripping

@derek-m, good suggestion. I'm going to hook it up up stairs where there's virtually nothing drawing power and see what happens. I'll try and get arou...

3 years ago
Forum
DIY
Reply
RE: Coffee machine that keeps tripping

@derek-m – this is the guy that keeps tripping.

3 years ago
Forum
DIY
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