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Last seen: Sep 8, 2026
@amanda1 The red cylinder looks like an expansion tank, which will probably be on the central heating/hot water circuit. The CH/HW circuit will probab...
There appears to be very little in the report regarding HVO/biofuels, given that the aim is to remove, in particular, oil boilers and discourage repla...
If I’m reading the report correctly, the aim is for decarbonisation by 2050 and the report recognises that new oil boilers in particular could have a ...
The starting point is vegetable oil and hydrogen plus a lot of heat energy. So i think that it could only be considered carbon neutral if the hydrogen...
Probably the way I phrased the question, I have found WPD helpful in the past also. Some of the fog is clearing a bit, if I understand correctly. I ...
@batalto, thanks again. Just out of interest I asked my DNO (Western Power), how they would treat this size installation. The website has some informa...
@timh Sorry, I didn’t mean to imply that the supply should be sized by the typical power requirements. I’m aware that there will be a large start up...
@batalto Thanks for the explanation. I’m also in the early stages of looking at ASHP sizing and expect a largish unit, similar to @timh. I am findin...
@timh How is the 75A requirement derived? I wouldn’t have expected this, more like say 25A under load for 6kW of electrical power, COP of 3. A quick...
Kev, I found these useful: I’ve located it near the recently approved Pyworthy solar farm, but you can move the location, zoom in, etc. Select sm...
@mattengineer Sorry, been away for a few days, thanks for the update. Not made any progress recently. We are trying to get an extension built on t...
@derek-m Indeed, Hydro refers to water, but according to this, hydroprocessing refers to a process using hydrogen in a two stage process: hydrotreat...
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Latest Posts
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RE: Siting of the external sensor on a heatpump
Of course had the heat source been a heat pump it would...
By JamesPa , 2 hours ago
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Never assume, it makes an ass of u and me! OK, tha...
By JamesPa , 2 hours ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
In fairness all heating has cost a lot to run in recent...
By JamesPa , 4 hours ago
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RE: Is it the house or the equipment?
@springswood We have two Daikin single split A2A syst...
By Rob of York , 5 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 1 day ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 1 day ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 2 days ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 2 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 2 days ago
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RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 4 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago



