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Last seen: Sep 18, 2026
Fair enough (the raging). Try not to let it upset you (easier said than done I know). Unlike some less fortunate people you remain in control it seem...
I think that's what they do, so they are varying ft. It would be good to see some plots at various oat values
No cycling there except possibly at midnight on the first day. You would expect so but don't forget cop varies with oat also. Also depends on how l...
Possibly. I haven't yet worked out what Vaillant do with water pump speed as I can't monitor it and don't have a reason to care. Why is it a 'proble...
So is the flow temp changing as well or is that fixed?
Yes but (a) you are talking Facebook and (b) it was the coldest day of the year so far so hardly surprising (+ all the things you say above)
My strong suspicion is that if a heat pump would otherwise cycle, particularly if it would otherwise cycle with short on time, then setting it to idle...
Can you clarify why the heat pump seems to go off altogether for several hours each day. [/quote] That is because I run in expanded mode and durin...
Not great. Average run time < 1 hour. Suggests cycling on thermostat or due to oversize. However not that many hours either, when was it fitted? ...
I would leave for now, make only one change at a time! NR mode will likely improve efficiency but no idea if it's significantly. Of course it also c...
I'm guessing the sharp dips in FT are defrost cycles. Recovery is slow and I cant see the expected spike immediately after defrost. Have you got 'qu...
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Latest Posts
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RE: Why are ASHP installs so expensive?
Posted by: @jamespa You can avoid this by knowing wha...
By Rob of York , 9 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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By Mars , 20 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...
By Papahuhu , 2 days ago
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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...
By springswood , 3 days ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 3 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 , 3 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 , 4 days ago
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