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Last seen: Nov 12, 2026
Not a real problem. If the rad output is correct at the design FT and design OAT, then it will also be (almost) correct at the lower FT determined...
Ah, that makes sense and the 7kW Vaillant plus backup is a strategy a neighbour of mine has, so far successfully, adopted. Note that at -2 the 7kW Va...
It wasn't supposed to be a criticism, just additional info. If you are building a spreadsheet, which many do, a formula is more useful than a table! ...
Many manufacturers give an equation in the following form: output is proportional to (deltaT)^n where deltaT is the mean difference between the ...
First question, what's the heat loss of your house? If by any chance you have a smart meter and can get half hourly or daily gas consumption you can...
Further to the above I found the manual here Page 37 describes the alarm and possible reasons, of which a blocked filter is one. Page 2...
Do you know what the alarm means. From what you 'have been told' it sounds like a 'low flow' alarm. If it wasnt there initially then something ...
As a former local government employee (following a career in engineering) I realised that explaining the consequences to politicians simply and in ter...
I am planning on trialling night time 'set forward' to take advantage of cheap rate tarrif. I have no idea if it will work in practice. The challeng...
Thanks for that, I think there is much comfort to be drawn because of: ... with which, based on everything you have told me, I agree. My heat ...
I think that conditions over the last couple of days are about the worst possible - cold but very wet = lots of defrost. I too am interested in what ...
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Degrees of Separation
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 , 21 minutes ago
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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 , 21 minutes ago
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RE: Plug and play solar. Thoughts?
Impressions so far from the one I've installed are that...
By EtchedPixels , 2 hours ago
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@batpred The Daikin temperature probe protrudes from th...
By Toodles , 5 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 , 7 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 , 8 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 , 8 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 , 12 hours ago
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Daikin Altherma 3 R F+W, room thermostat control, weath...
By JanHarley , 13 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 , 16 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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