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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Jul 20, 2025
Profile Activity
Topics: 17 / Replies: 2064
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RE: Is My Midea Heat Pump Inherently Defective?

@transparent - certainly, here are my replies: A: at the moment it is 50:50 between 1 and 3, with 2 not really part of the problem (because the WCC ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost behaviours

@jamespa - I agree, it is a useful plot. Sometimes nature does oblige, and provide a convenient operating range which we can observe. I do however wis...

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

I have been looking a bit more closely at what actually happens when my heat pump gets itself into can't quite cope mode, and the IAT falls, ie when t...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP on a low income: a cautionary tale

This is a common problem that gets nowhere near enough attention. The problem is two linked requirements: (1) to get a grant, you have to have an MCS ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost behaviours

Here is my heat pump's behaviour (Midea 14kW running in weather compensation mode) over the last week, including cold outdoor air temperature periods ...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Totally bewildered with my ECO4 heat pump installation

We'll do what we can, but first we need more information. Rough location and type of property. Your property's heat loss. It's a figure in kW that...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best Heat Pump Brands 2025

I see other have posted while I was putting my last post together. Not wishing to over-prolong this, I do however want to add three further comments a...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best Heat Pump Brands 2025

I didn't say that, but I did imply they could be. What I did was give a hypothetical example of how a poll could mislead, and then said "In that examp...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best Heat Pump Brands 2025

@editor - I may have hinted at what my academic response might have been, but I am not getting bogged down in dissecting market dynamics in academic d...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best Heat Pump Brands 2025

I'm sorry, but I have to reiterate you cannot draw any conclusions about overall satisfaction from these results. If I were to put on my academic hat,...

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

@jamespa - I know no offence was intended, and none is taken. Rather, it is a good thing to have more information and methods, people can then choose ...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: How much radiator capacity do I need for an air source heat pump?

@jamespa - I did say there is more than one method! Not everyone is familiar exponents and reciprocals! The Stelrad (there are others) conversion fact...

7 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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