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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Aug 15, 2025
Profile Activity
Topics: 17 / Replies: 2075
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Reply
RE: Best Heat Pump Brand 2025

@editor - as I said, by all means run the poll, and publish the results, but the methodology (and thereby its strengths and limitations) does need to ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How much radiator capacity do I need for an air source heat pump?

@simonwhiteley - I had a similar conundrum (limited wall space) and for the same reasons ended up with mostly K3s. They do look huge when they first g...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Best Heat Pump Brand 2025

Chairman Mars - you know I think you do a truly excellent job with this forum and other related activities, but I have to say this 'unique accolade' i...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

It wasn't meant to be a representation of political decision making, just as Fawlty Towers wasn't meant to be a representation of a small town hotel! ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

I absolutely agree. Not only is it absurd that electricity costs so much more than gas per kWh, it is even more absurd that way pay extra levies* to g...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

I agree, and constantly remind myself of this. I am still the only one I know of in my locality who has a heat pump. I even said to one of my local co...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Short version: the Freedom Heat Pumps Tool Kit contains not one but two errors. If you leave both in place, you get a (meaningless) MCS pass, if you c...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Quite right, definitely not a product of whatiffery! Instead, empirical trial and error, which is ongoing. One thing I have picked up recently is that...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

I shall endeavour, as I always do, to keep relations between Freedom and me as warm and as cordial as can be.

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Righty ho, here we go! The question is: does the lower mean LWT caused by cycling critically reduce output at low OATs? Current best estimate of hea...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

I agree, but is that by design or by accident? There is also some evidence of overshoot at the end, not beginning, of the cycles in the chart I posted...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@jamespa - agreed. But never one to sit still, I have been thinking about another possible cause for the low OAT deficit, which does involve, indeed i...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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