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Last seen: Jun 14, 2026
Our Vaillant at present (outside temp 18C and the heat pump is off since internal temperature is above the set point) has a target temperature for wat...
they do allow a volumiser to be used, so the obvious question is could a 4 port buffer be configured as a volumiser and stay in warranty?
@pooneil Hi and welcome. I have to say you are thinking like a gas boiler and heat pumps don’t work well being treated that way. It’s best that you ...
Our solar hot water is now 2C above the set temperature the pump got it to at 1pm. Thats the upside. But solar PV, nominal 6kW was generating 5.6 at n...
Great progress so far, keep going you’ll get there! Your Welsh cottage part will have a very long thermal time constant, as you probably already reali...
Mixer showers need virtually identical hot and cold pressures (or at least our new one did) or you need a high flow to mix properly. Our mains varies ...
Keep turning the weather compensation parameter compensation parameter down until the house is at the right temperature for you. Once that’s right y...
@jamespa our Vaillant control box, (wired into domestic power and hence on a domestic circuit trip) didn’t go back on automatically when we reset the ...
That looks as if you’ve found it! I’ve browsed it a bit now. The lots of time I spent (wasted) was playing with the BRE tool before I realised tha...
We have external awnings/canopies to keep the sun out. They reduce the air temperature by 6C in the kitchen which has a large south facing window. The...
@madbilly I can’t help with most of your questions since I don’t work at BRE. I’m a heat pump customer with a professional science/engineering backgro...
You could try/p> BUT i spent ages on it before realising that the installation is what mattered not the pump. If a very efficient 10kW pump is bad...
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Degrees of Separation
Latest Posts
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@majordennisbloodnok I just noticed that A2A manufac...
By Batpred , 46 minutes ago
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RE: Help me keep the faith with my air source heat pump installation
I didn't know about those, they look like good pieces o...
By JamesPa , 49 minutes ago
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@mkz, that's very helpful. Even if Urban Plumber are no...
By Majordennisbloodnok , 56 minutes ago
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RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
By Batpred , 2 hours ago
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My first question is why bother with the auto balancin...
By JamesPa , 2 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Hi @hanno - good question. The range of hybrid invert...
By Transparent , 2 hours ago
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RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
By Tim441 , 2 hours ago
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I share the same experience as @majordennisbloodnok hav...
By Old_Scientist , 3 hours ago
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RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
By Majordennisbloodnok , 6 hours ago
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@jamespa many thanks, definitely i will give the pre...
By ragtime27 , 17 hours ago
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RE: Heat pump installation quotations
@jamespa I noticed that in the Heat Geek design consult...
By Batpred , 19 hours ago
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RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 1 day ago
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RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
By Majordennisbloodnok , 1 day ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Vaillant arotherm plus 12kW. Installed March 2025. Ex...
By Harebell , 2 days ago
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