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Last seen: Sep 17, 2026
@uknick TBH if I were taking the floor up anyway then I would upgrade. Its quite possibly not necessary but (apart from the cost of the ...
Half time during a cup final?
The last photo is defrost for sure (or cooling, but presumably not at this time of year). You can tell because flow < return.Once you get close to...
@uknick Some very useful real world data from @old_scientist very relevant to your case. If your loss is really 3.5kW I think its less than 50% pro...
Interesting and possible I suppose. Of course this behaviour might be firmware-version dependent. I have never tried turning it off, but I think I w...
Very sensible. @old_scientist has very well described the design process starting with heat loss. You seem to know your whole house loss is ~3.5kW, ...
Mostly I find Vaillant controls good, but occasionally not. The legionella cycle warning (hot water) seems to come on before the cycle runs for examp...
No it's not and i think what yhey said is nonsense (how would ut work?) Boost is, so far as i have been able to tell, a one off 'on'. However I thi...
Not if you are systematic and patient. The high OAT end is logically something like 20 at 20, or more practically something like 25-27 @ 16 or there...
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Degrees of Separation
Latest Posts
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RE: Why are ASHP installs so expensive?
@batpred I take your point and, perhaps, your experienc...
By ian33a , 11 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...
By Papahuhu , 1 day ago
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 2 days 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 , 2 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 , 2 days 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 , 2 days ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 2 days 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 , 2 days 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 , 3 days 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 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 , 5 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 , 6 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 , 6 days ago
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