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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Aug 15, 2025
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Topics: 17 / Replies: 2075
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Reply
RE: 17kw Grant Aerona heat pump not performing

@allyfish - thanks for clarifying. I think the important point is that marginal units, and even some not so marginal units, will struggle in colder we...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

@batalto - one of the upstairs rads is 2 degrees warmer than the others which are all within half a degree of each other. I tightened the hotter one b...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 17kw Grant Aerona heat pump not performing

Is this correct, I wonder? I'm getting at the old energy vs power thing again. Isn't the (max available) power (in kW or could for example if it was a...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

@batalto - they are as balanced as I can get them (mostly by lockshields, starting full open then closing in stages in turn, then final tweak where ne...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

Some conclusions from last week's figures. It was an interesting week, insofar as the ambient temp was at or very close to design temp for a sustained...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

I think it may well be glued to the exchanger, it is certainly glued to itself, ie top to sides, and because of the way the exchanger has been install...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

And then they bury it in page 15 of a 98 page document. What planet are these idiots on? This is the relevant paragraph, with my emphasis added: ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

I am sure this is a factor, and as I have said, I don't think Headroom Heat Pumps factor this in, they just assume PHEs (and LLHs) have 100% heat tran...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

@kev-m - here's the text from the post that wouldn't allow me to post the file:I've extracted and tidied up the Midea 14 and 16kW data from the Engine...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

My understanding as a non-lawyer is that as I don't have a contract with Freedom or Midea (for Midea heat pumps in the UK, Freedom are in effect Midea...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

This does indeed seem to be the case. I am reluctant to involve Trading Standards because any complaint I have is not with my installer, who did wha...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost

@kev-m - I've extracted and tidied up the Midea 14 and 16kW data from the Engineering Data handbook.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Page 153 / 175
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