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Last seen: Sep 21, 2026
@transparent You have previously commented that there is little or no correlation between retail price and carbon intensity. Are you able to share th...
As @harriup says this needs to be fixed. Its worth noting that, later in the season, when defrost occurs, there will be short periods when return i...
This is exactly what the smart heat pump controllers like Homely, Passiv, Havenwise and Adia claim to do, taking into account weather forecasts, futur...
You have a house with an enviously low loss and able to run at an enviously low flow temperature (29C!). I wish mine was like that! At a flow tempe...
Interesting data. Assuming a difference between the intake air sensor and the actual OAT of 2C, and that 600W is contributed from sources other than...
I would say for sure assuming it connects to the heat pump controller.
Many, if not most/all, ASHPs have their own tank sensor. Unlike the immersion thermostat it is analog not on/off so that the ASHP knows the actual te...
Good luck and no rush. Any new measurements that are made will be easier to interpret when it gets colder anyway.
AIT (air intake temperature) and energy will correlate well whatever the IAT is not least because the heat pump controller reacts to AIT alone and the...
Unless the IAT was in fact 19 when you did the energy vs OAT curve, we need to correct for that!
It looked bigger on the charts you posted recently, perhaps more like 2-3 C The difference does make a fair difference to some of the calculations p...
This confuses me. Do I correctly recall that your heat pump (and more importantly OAT sensor) is in a bit of a well so the OAT sensor doesn't measure...
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Degrees of Separation
Latest Posts
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
Posted by: @ian-s Could always use the money saved o...
By Rob of York , 3 hours ago
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RE: Why are ASHP installs so expensive?
And then you look at US electricity prices and weep.
By bornagain , 5 hours ago
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Depends on what controls the pump! Thats the whole poi...
By JamesPa , 10 hours ago
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The positive reviews keep coming in for Britain's Heat ...
By Mars , 1 day ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
I have one of these fitted which also allows you to reg...
By Old_Scientist , 1 day ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
By JamesPa , 2 days ago
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RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
By JamesPa , 2 days ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 2 days ago
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RE: Cascade System or larger single unit
@renewables345 I would say if it a new build it’s no mo...
By Aventus Eco , 2 days ago
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RE: Say hello and introduce yourself
@gz00, welcome to the forums. There’s a huge amount of ...
By Mars , 3 days ago
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RE: Home energy storage & battery register
1 fox ess lv5200 batteries, plus 2 more waiting to be i...
By Jimcub , 3 days ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 3 days ago
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My feed of random industrial auctions turned up this au...
By Prunus , 3 days ago
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We’ve just passed 20 million forum views! 🎉
It's official. The Renewable Heating Hub forums have of...
By Mars , 4 days ago
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