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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 29, 2025
Profile Activity
Topics: 17 / Replies: 2189
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Reply
RE: Rate the quality of your heat pump design and installation

I agree, that's the point I always made, including the second part, ie I knew full well an old leaky building costs more to heat, whatever the fuel. ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: AI Heating Controls & IoT

@mjr - I agree, and said earlier, it does get indirect feedback via the RWT, and yes, I agree, a bigger difference all other things being equal betwee...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: The Mystery of the Weather Compensation Curve

This is not necessarily the case. Which uses more energy: keeping my house at 18 degrees all day every day for a week, or heating my house to 18 degre...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: AI Heating Controls & IoT

@editor and @derek-m - there is partial indirect feedback about the indoor temp, in the RWT. As the house warms, the RWT gets warmer, and that's what ...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Mitsubishi Ecodan not good enough ?

Small listed semi-detached cottage, original parts from mid 1700s, with later additions. All solid stone walls apart from 1980s addition of one bedroo...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

See the thread "14kW Midea ASHP in an old leaky building" (<=link), lots of info there. Small old three bed listed cottage, and yes I do have a pla...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: MCS Certified installer problem

Unless you happen to have a listed building. That removes permitted development, so you have to do both Listed Building Consent and a Planning Applica...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi Ecodan not good enough ?

Just for some perspective, I have been approaching that figure per week during the cold spell. Total Dec use to date (this morning) has been 1281kWh a...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: AI Heating Controls & IoT

From what I've read in the Midea manual (see posts passim), in heating mode weather comp only measures the temp of the heat source, ie the ambient, th...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

This has come up before, different jargon (yield? environmental yield????) and formulas, adding to the general obfuscation. The industry really needs ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin - I'm interested to know where those charts came from, because I am not sure they make sense for December. They show a notable decline in consu...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: AI Heating Controls & IoT

@transparent - fascinating, but I am not sure I want a smart phone telling when to have a shower! Next thing will be AI pong sensors, and then the AI ...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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