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Last seen: Sep 17, 2026
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...
OK here goes (you did ask!) Radiator output is dependent on the area of the radiator and the temp difference (lets call it DeltaT) between ...
Not that you can buy economically. You can buy temperature sensors with displays for very little, but measuring flow is invasive so more complex. &...
Hi, this is just a quick reply to the above quote, I will look at pictures later today. It's not the flow rate you need to measure its the ...
Thats worrying, its like an obvious place for air to collect; why would you not put a bleed there (no need to answer that!)
In fairness my experience was 2 years ago. However the example you quote and that of @simonb seems to confirm it is still happening. The change t...
Firstly welcome to the forums and thank you for all the details. You are asking the right questions. Lets start with the 10mm tails. With...
COP of 17.7 exceeds the theoretical Carnot maximum so is definitely too good to be true. There are several periods when its producing energy but not...
Not sure exactly what your time pattern was when it didnt go how you expected but, if you still had midnight to midday programmed at 18.5 I would have...
I think @ashp-bobba was referring to a possible airlock in the DHW circuit, near the DHW tank itself. As this is usually a high point in the DHW circ...
Welcome to the forums, you are asking the right questions. I had exactly the same experience, 2x+ oversizing (16kW 'surveyed' vs 7kW measured). The...
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Degrees of Separation
Latest Posts
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RE: Why are ASHP installs so expensive?
Of course, @jamespa, there’s no theoretical or even pra...
By Majordennisbloodnok , 17 minutes 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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