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Last seen: Sep 13, 2026
Why do you want to maintain a specific deltaT? The output of the emitter (which is what you really care about, because it needs to balance the heat l...
I dont think it is correct, given that @ashp-bobba described how the defrost cycle of an A2A het pump works just a few weeks ago.
I didn't know about those, they look like good pieces of kit. They are about £30 eachplus VAT It would be pretty mean IMHO of an installer not to d...
My first question is why bother with the auto balancing valves, what value are they adding (other than to confuse matters). Why not just normal manu...
The answer to that is at the whim of global despots (and others).
I think the best advice is - if you want a heat pump get a heat pump. Even though the underlying technology is over 100 years old, its application to...
Thats a fair comment when no tap is open. There will however be a dynamic loss once a tap is open, which I think is the sum of the loss in the pipe w...
OK fair enough, just asking. Its possible to do pressure loss/flow rate calculations if you know the pipe length and roughly the number of bends see...
Whats your mains pressure like, what sort of flow do you get at the cold water tap furthest from the incomer. If you have good mains pressure and/or ...
@sttpd1917 Whats your current gas annual usage, does your house cool a lot at times or stay reasonably warm, do you have half hourly meter readings...
Energy prices are in large part geo political. If you are able to predict geo-politics out until 2030 (or, frankly, beyond the next month) then you ...
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Degrees of Separation
Latest Posts
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RE: Next steps on my ASHP journey: Radiators and Pipework
If you are considering phasing the project, then I woul...
By GrahamF , 7 hours ago
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RE: Siting of the external sensor on a heatpump
Of course had the heat source been a heat pump it would...
By JamesPa , 9 hours ago
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Never assume, it makes an ass of u and me! OK, tha...
By JamesPa , 10 hours 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 , 12 hours ago
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RE: Is it the house or the equipment?
@springswood We have two Daikin single split A2A syst...
By Rob of York , 13 hours 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 , 2 days ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 2 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 , 2 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 , 3 days ago
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RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 3 days ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 3 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 4 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 4 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago
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