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Last seen: Oct 31, 2026
Before I got a heat pump I turned down my gas boiler flow temperature from 70 to 50 which was the lowest it would go. The result was a much more comf...
OK. What Im seeing looks fairly normal TBH: 1 start per hour is good (1028 on off cycles in 1303 hours); there is no evidence of short cycling Un...
In general pure LWT mode will be more efficient because it means you are operating at the lowest flow temperature. It may well, depending on house, a...
Wow, that sounds like fun. There is another thread where someone with a Hitachi heat pump (featuring a more conventional vertical fan) describes a si...
@davidb Further to my previous post one further comment I would make is that 300l system volume is not consistent with 7 radiators. Unless you have a...
Since May 2025 it no longer a requirement in England to benefit from permitted development rights (ie planning consent without having to make a planni...
@davidb Once again I agree with Adrian. Houses have memory and different bits cool at different rates. So for example (this is just one mechanism...
I agree with the comments made by @adrian both about the fire and the DHW. You should also bear in mind that, with a low loss house, COP isnt so impo...
I think its small, but off course it could happen so please dont rely on it. They do a sample check of some kind on installers and my system was chec...
I have been wondering that myself. The fact is that, even with the buffer (meaning that the secondary pump doesn't have to push water through the pi...
The change in calculation methodology (which mandated BS EN 12831-1:2017 as opposed to the simpler calculation) were first published early in 2025 an...
That statement in itself (which I am not in anyway criticising) exposes the limitations (I originally wrote madness, but relented because they doubtle...
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Degrees of Separation
Latest Posts
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RE: Marvel Heating liquidation
In light of this conversation, I published this piece t...
By Mars , 10 hours ago
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RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
I think I'd argue that's not the case - in fact that mi...
By EtchedPixels , 13 hours ago
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@etchedpixels Agreed, just a thought for others. I a...
By Watcher , 13 hours ago
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RE: DIY powerflushing tutorial
Nice contraption- I like this kind of thinking. Last ye...
By Travellingwave , 24 hours ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
By trebor12345 , 1 day ago
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Coming back on subject... A shortened version of the ...
By Transparent , 2 days ago
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RE: Say hello and introduce yourself
Perhaps it is time for an update on ‘our’ project. We h...
By Toodles , 2 days ago
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RE: Free app: run the immersion / heat pump from Growatt battery & solar surplus – no Home Assistant
Please bear in mind, everyone, that in order to use thi...
By Majordennisbloodnok , 4 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis Thanks for posting this and Im so pleased you ...
By JamesPa , 4 days ago
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RE: I need help with Ecodan ASHP
@f1p It turns out there have been a solar panel install...
By Andris , 4 days ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews your installer would be right to say that the...
By GrahamF , 4 days ago
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RE: Tradespeople on Their Phones: What’s Acceptable When They’re Working in Your Home?
Actually, that's a very important point. I've only ev...
By Majordennisbloodnok , 5 days ago
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RE: Aerotherm and weather compensation
These are likely inked. The basic explanation is tha...
By JamesPa , 5 days ago
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RE: Electrical works for air to air heat pump
agree with above. I have not had extra costs added wh...
By Batpred , 5 days ago
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