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Last seen: Sep 18, 2026
The last bit of that is bad. Thats just badly (well appallingly) designed UFH and most likely the fundamental problem here - half your energy is goin...
Unfortunately COP for DHW will always be lower because it requires a higher flow temp and thats how the thermodynamics work. 52C is high however, you...
Er not sure that is universally true. Mine is cheaper overall to run that my gas boiler would have been, by about 20% or thereabouts. I have radiato...
Firstly you are getting your units mixed up which is a little confusing. kW is power (how fast you are driving), kWh is energy (how far you have gone...
I would bypass the buffer tank in one of flow or return only, it will then act a bit like a volumiser. The problem you have relatively to a tank th...
I agree with all of that. 220 pages is perhaps 210-215 pages too much. Unfortunately there is no substitute for (a) understanding some basics (which...
@davidnolan22 Perhaps you could post some more info about your setup, house and system and WC parameters - you never know it may be possible to diag...
OK. I have 2.8 for DHW and 3.4 for space heating running at an actual FT of about 36. Yours does seem a bit low depending on what FT you were runnin...
Don't forget to increase max ft also. Mine is set to 55, way clear of the curve. I think that might even have been the default.
Suggest, as a test, you turn up the WC curve a lot so any change or not is unambiguous. I'd also set max ft to say 55 to get this parameter out of th...
Emptying the NR schedule will turn off NR mode yes. Im not sure you have a reason to do so yet though. With such a small reduction in O...
Not surprised by that. FWIW my Vaillant has done more or less exactly the same. Its COLD out there! With those figures I get an overall SCOP of 4, ...
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RE: Why are ASHP installs so expensive?
Thanks for all the interesting responses. I managed ...
By springswood , 13 minutes ago
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RE: Heat Pump deployment statistics: June 2026
To my eyes, sat behind all of this is a basic policy ma...
By Temperature_Gradient , 15 hours ago
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Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 19 hours ago
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We’ve just passed 20 million forum views! 🎉
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By Mars , 19 hours ago
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RE: Missing flow temperature in Heat Geek proposal
That calculation is reasonable, output is proportional ...
By JamesPa , 22 hours ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
Have you looked at the Nibe website? They list their ap...
By Lizzie , 23 hours ago
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RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 3 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I would encourage you to have a conversation ...
By Rob of York , 3 days ago
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RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
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RE: Next steps on my ASHP journey: Radiators and Pipework
If you have a flowmeter and two temperature probes, the...
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RE: Siting of the external sensor on a heatpump
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