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Last seen: Sep 6, 2026
@jamespa - here's a not very pretty plot of OAT and flow rate for the last 48 hours. The right hand end is not typical, as the OAT exceptionally high....
I think this is very pertinent. I believe the Midea reported flow rate (of around 1.4cu m/h) is about right because there is an anlague flow meter in ...
Yes, I agree, and also agree that the the combination of low rad temps and warmer but not yet up to desired temp rooms reduces heat transfer. For exam...
Defrost cycles are ones in which the LWT falls below the RWT, ie the circulating fluid loses heat as it passes through the heat pump. Thus all the cyc...
Wind chill in action. The OAT has warmed up a lot over the last 24 hours but my heat pump is still failing to get my house back up to temperature. The...
@econonsense - tomorrow is fine. Is there not some sort indoor controller panel? That is where you would normally get and set the settings? Very few o...
@econonsense - if that is the timing, then it has long enough to heat the water - but to what temperature? You need to find out what the set (target) ...
I really should proof read comments before posting...
You need to check what it is actually set to. I am not familiar with your brand of heat pump, but it should nonetheless give you some form of monitori...
Indeed. They do have a chatbot box on their website, maybe that works 24/7.
If they are this company, then their website says they are MCS accredited (certified), and it also answers @editor's question, they are HIES registere...
We need to look at this more closely, all the more so given your heat pump was installed this April. If it means exactly what it says, it won't be rep...
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Degrees of Separation
Latest Posts
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RE: Next steps on my ASHP journey: Radiators and Pipework
Or where you can fix the pwm% as you can eg with Vaulla...
By JamesPa , 5 hours ago
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RE: Where heat loss surveys seem to go against practical reality
@cathoderay and others. I think there may be some con...
By JamesPa , 5 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 2 days ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 2 days ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 2 days ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 2 days ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 2 days ago
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It’s been out a few days and Amazon has already attache...
By Mars , 2 days ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 3 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 6 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
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