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Last seen: Nov 12, 2026
I think a valid question is - what savings could be achieved with just a bit of fixed profiling of setbacks based on energy price, and how do they com...
@mike-patrick It is a fact that ASHPs are less efficient at low air temperatures, thats all documented in the specs and is a direct result of the the...
Your description of the Mitsubishi pre-plumbed cylinder is what I understand also. If there is a (separate) heat exchanger to separate glycol from no...
Further to the above I have the impression that there are in fact a fair number of people (particularly young people) who are scared of climate change...
Modern DHW cylinders designed for heat pumps have quite sophisticated finned coils to maximise the surface area and thus heat transfer. Ideally you p...
Yup, its a chicken and egg situation. Until people accept that it must be done they will find ways to avoid doing it if its inconvenient to them. Bu...
On another forum and in a different context someone (@johnmo who is also on this forum) has just posted this link Its designed for DHW (which presu...
Before you put glycol in the radiators, do you have a heat exchanger to separate the external plumbing from the internal. Thats quite common (but not...
@lucia Just a (possibly evil) thought. There are politicians and political movements throughout history that have been highly successful on the back ...
@allenc According to Wiki geothermal power heats 89% of the houses in Iceland, and over 54% of the primary energy used in Iceland comes from geother...
So if the water from the spring were cooled to say 30"C running through a heat exchanger, 4l per minute is 20×4.2/60 x 4 kW, about 5kW. That's a usef...
Thanks for doing so. We do need more data on this and many other things because there are lots of variables only some of which theory can currently t...
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Latest Posts
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Should I change my cylinder when changing from a gas boiler to a heat pump.
I have 178 L Gledhill unvented cylinder which was fitte...
By David , 5 hours ago
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RE: Plug and play solar. Thoughts?
Impressions so far from the one I've installed are that...
By EtchedPixels , 6 hours ago
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@batpred The Daikin temperature probe protrudes from th...
By Toodles , 9 hours ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@editor And as an occasional contributor, may I say wel...
By Toodles , 11 hours ago
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
They don't have to try. Our entire system is d...
By EtchedPixels , 12 hours ago
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RE: Why don't people choose heat pumps?
Fair enough. I guess I was thinking of pipes that run ...
By JamesPa , 12 hours ago
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RE: How Can I Prove Coal Was My Main Heating Source Without Receipts?
Got excepted for the grant now so thanks for the replie...
By Chilli304 , 16 hours ago
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Daikin Altherma 3 R F+W, room thermostat control, weath...
By JanHarley , 17 hours ago
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RE: Buffer tank on a 2 x 14kw Ecodan system
Pretty much as I had guessed in my crude scaling from m...
By JamesPa , 20 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Well you have a vibration generator running at some fre...
By bobflux , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
By Papahuhu , 2 days ago
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
By SusannaSaunders , 2 days ago
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Six books in three years and I think I’ve now covered j...
By Mars , 2 days ago
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