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Last seen: Sep 15, 2026
True (first sentence) Thats the reason to consider the 5kW (second sentence). See my previous email for suggestions/questions if you wished to tak...
Thats disappointing. In my 1930s home my ASHP has worked out about 20% cheaper than gas in the first year and about the same as gas/a little bit l...
You need to make an allowance for defrost, perhaps 10-20%. That said I would also be tempted to go with the 5kW based on this data. Before coming t...
Hopefully you can read this. The various tabs in the xlsx show average power over 3, 6, 12, 24 hrs. If you can get average temp or degree days for y...
FWIW The standard single phase domestic EV charger is 7.2kW. You can get three phase ones if your vehicle is capable and you have a 3 phase supply, 2...
Im not justifying Vaillant or anyone else's documentation but please note that there is other documentation available, including in particular lengthy...
The problem I guess is balancing risk/reward. Investors invest to get a reward, if they perceive they might not or perceive a risk they will either l...
Thats a much overlooked benefit of a (properly installed) heat pump based system. Basically much greater comfort for the same cost or a bit less. ...
I don't doubt that you are right that its not a magic solution, if there were one it would surely have been found by now. It will likely take many sm...
Goodness knows why they fit this rather than a conventional diverter-only valve. Its a nice (and jolly expensive) valve for sure, but the more you le...
Attached the full data for the current (not the Black) Vaillants. In Czech unfortunately but still understandable. 5 and 7 are different and not thi...
Based on what I remember of what you have said I think quite possibly yes. I took a similar risk with the 7kW and dont for a moment regret it. If it ...
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Degrees of Separation
Latest Posts
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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...
By Papahuhu , 3 hours ago
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 8 hours ago
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RE: Missing flow temperature in Heat Geek proposal
The Heat geek contract had various get-out clauses with...
By Batpred , 10 hours ago
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RE: Why are ASHP installs so expensive?
It seems a quite comprehensive breakdown. I will try to...
By Batpred , 10 hours 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 , 16 hours ago
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RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
By springswood , 17 hours ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 19 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
If you have a flowmeter and two temperature probes, the...
By bobflux , 1 day ago
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RE: Siting of the external sensor on a heatpump
@jamespa Absolutely. Even if the same mistake was mad...
By Batpred , 1 day 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 , 2 days 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 , 4 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 , 4 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 , 4 days ago
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