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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Nov 21, 2025
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Topics: 17 / Replies: 2352
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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
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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
Reply
RE: The Mystery of the Weather Compensation Curve

@derek-m - only in 'interesting times'.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The Mystery of the Weather Compensation Curve

A room temp sensor can be fitted, it connects to a PCB in the main outdoor unit, but it is not exactly clear what it can do... From the Installation...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Antifreeze protection

True, I meant to mention that in the pros and cons but forgot. As I understand it, the dilution of heat carrying ability isn't huge, but neither is it...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The Mystery of the Weather Compensation Curve

I'm pretty sure the Midea controller can have an external room temp sensor fitted, there is a line in the 'Operational Parameters' for it, Ta Room Tem...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Peering over the ASHP cliff

I had almost exactly the same thing, among other quotes, and it made alarm bells ring for me. My actual heat loss is about 12.4kW, based on the better...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Page 173 / 198
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