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Last seen: Aug 8, 2026
Given your background, you will have come across control theory (you probably know more than I do!). The fundamental problem with room compensation i...
It has been said that both manufacturers and installers are reluctant to provide too much data too easily for fear of being overburdened with support ...
Good idea IMHO. You just need some appropriate time constants so its not up and down all the time when there is scattered cloud!
I use Home Assistant which captures the same data as that displayed in the Vaillant app (no additional hardware needed). OAT, FT and occasionally pow...
Ideally design upstairs and downstairs for the same (low) flow temperature, otherwise you are going to be mixing down for the UFH which is not desirab...
Wow, thats a big (or very poorly insulated) bathroom. Are you sure its that much? As I'm sure you know radiator output and thus selection depends o...
Decorators caps, not screwed down (they can actually be used to adjust the flow) or the original head just balanced on top. I do the second of these ...
Thats a very astute observation. Its like an electrician working without any test equipment!
@travellingwave Just to add to what @mars has said, judging by the questions we get here there definitely is a market for the things you mention, al...
It's very dependent on the lsv, heat geek did a series of experiments (search for 'valve authority') and found the control range varied from 0.25 turn...
The version of the Vaillant installation manual I have says that a Type B RCD must be used 'if these are specified for the Installation Site'. So fa...
I'm not so sure that the rest of society values a maths or science background. Industry does but the average person in your local pub (or on the Clap...
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Degrees of Separation
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HomeTherma Is Live: A New Home-Energy Platform Built Around the Homeowner
This is something I’ve been building for months, largel...
By Mars , 1 hour ago
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Does minimum system volume matter in the context of sim...
By Tony.Stolz , 4 hours ago
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RE: Electricity price predictions
yes, same with the IOG tariff which is even a bit harde...
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RE: Indevolt Batteries UK Support & Info Thread
I had a quick look and they are a little vague. They ...
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RE: Has anyone seen this problem before? Huge anticycling times
Oh dear. Glad it was replaced. I have been mighty imp...
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RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 1 day ago
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RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
By bobflux , 1 day ago
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RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Thats all interesting. DHW on my Vailant seems to respe...
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
One of the other mods has just reminded me that @ashp-b...
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RE: PV and battery long payback - sense check query
@old_scientist I have now drafted 2 replies - both have...
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: adrian Manufacturer: Appliandirect.co....
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