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Last seen: Aug 15, 2026
The useful bit is the bit that specifies the heat loss at the design temp ( presumably around -3). It's your choice of course but I genuinely fear t...
@harryrea In a heat pump only system you are never heating space and DHW simultaneously because they require different flow temperatures. For the sam...
Ok so I think you consider it (structural zoning, not hybrids) mainstream. Fair enough. Let's consider a couple of fairly mainstream examples. a) ...
I'm not an expert on SAP TBH but others here are. Could you post the full report (feel free to redact personal info) which will give a better insight...
I'm still struggling with this (on the grounds that it's unnecessarily complex) for the typical 100sq m, roughly cuboid, property that makes up the va...
First question is why do you think you need 18kW? Whats the house construction and where are you? 45W/sq m is high for a modern purpose built house...
They haven't asked me to prove that I have an EV (I do) but the terms do require that you charge an EV from time to time, so I guess they could if the...
@heatgeek I do wonder whether in a house with high thermal mass whether some degree of look ahead control would be useful particularly in the seasons...
Ours is also still on. Heat pump kicks in a bit at night when it's very cold (6C last night) and generally is off all day. The key as mentioned abov...
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Latest Posts
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
I think I saw a diagram for an exhaust air dhw tank wit...
By JamesPa , 9 hours ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu Of course, in the way of such things, there a...
By Toodles , 16 hours ago
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@DavidB, I think @Majordennisbloodnok has already naile...
By Mars , 2 days ago
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RE: Indevolt Batteries UK Support & Info Thread
Thanks, however that's an answer to a subtly different ...
By JamesPa , 2 days ago
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RE: Flushing system, cleaning and inhibitor
Yes, my 50L volumiser uses the two lower ports, so ther...
By Old_Scientist , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Such elegant symmetry. look at my lumpy bag of...
By Papahuhu , 3 days ago
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RE: PV and battery long payback - sense check query
Quite probably not, but you can get a 32A relay and a S...
By JamesPa , 4 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s Look forward to making contact soon! Regards, To...
By Toodles , 4 days ago
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I don't notice mine defrosting, and most of the time Im...
By JamesPa , 4 days ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
Kind of you, @calumm, but it was @f1p who did the heavy...
By Majordennisbloodnok , 5 days ago
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RE: Electricity price predictions
2. As EV ownershp increases it'll certainly increase de...
By EtchedPixels , 5 days ago
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I meant to say I cannot register my kit at Energyplus… ...
By Batpred , 5 days ago


