Last seen: Aug 8, 2025
As @ashp-bobba says there are lots of variables. My house takes 3-6hrs to change temperature by a degree. I have one room with a fancoil that respon...
Correct. However unofficial data suggests this ignores defrosts and you might have to derate by 10-20pc when it's defrosting a lot, which in fairness...
A couple of hopefully helpful comments Vaillant 10kW is the same as the 12kW, just software limited. A neighbour of mine was borderline 7/10kW an...
The order, despite it's title, appears to apply to England and Wales, see article 1
Yes but we have to deal for now with the world as it is not as we would like it to be (whilst seeking to change it at the same time) Householder ...
Yes that's true of course Unfortunately installers all too frequently don't use the correct numbers, and it's not always possible to tell, which is...
It's not really that bad if you just take it methodically, using the knowledge on this forum, and have confidence in your own ability to think logical...
@matwin This post is a real world example of the effects of oversizing and buffers. It's worth reading it and the subsequent discussions.
My gas consumption was 18-20MW/yr. It was 10% higher before I turned down the flow temp to 50 (from 75 which is where the maintainer left it) and sta...
That's a curious conclusion with which I am struggling, not least because I have a fairly comparable situation which doesn't seem to create a conflict...
I don't have much concrete evidence but The only way to explain the discrepancy between my calculated and actual heat loss is to assume ach =0.5 i...
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RE: Sunamp Thermino Heat Battery
I am thinking on installing this as well given space co...
By asoksevil , 1 day ago
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RE: Is your heat pump insured?
My home insurance renewal is due soon meaning I am doin...
By cathodeRay , 1 day ago
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New Vaillant aroTherm Plus in black - When will it come to the UK?
It looks like Vaillant are updating the aroTherm plus l...
By Sandy , 1 day ago
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RE: Planning Permission May 2025
Fair enough. I have read the legislation and MCS020a ...
By JamesPa , 1 day ago
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RE: Share Your Experiences with Heat Pump Manufacturer Support
Ive called most of them over the years. By far the best...
By dgclimatecontrol , 1 day ago
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RE: How do I choose a single room MVHR to prevent losing heat in my bathroom ?
An update on the Heatsava. It is the most difficult thi...
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RE: Octopus Cosy & Octopus EV + bidirectional smart tariff, together. What, eh?
I've certainly seen that on their Ts & Cs page but ...
By Majordennisbloodnok , 2 days ago
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RE: ASHP heat output monitoring
@carlo - not much better, is it. It looks more like a u...
By cathodeRay , 3 days ago
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RE: Renewables & Heat Pumps in the News
this document extensively describes (in a non-blame, ne...
By Judith , 3 days ago
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RE: Ecodan - Legionella Operation Time and Target Temperature
Once the white plastic cap is removed, my immersion loo...
By Old_Scientist , 4 days ago
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RE: Replacing Refrigerant on Mitsubishi Heat Pump
@dgclimatecontrol I don't know, but they were not happy...
By DavidAlgarve , 4 days ago
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RE: Why do we need pressurised systems?
A good question @toodles. My old open thermal store and...
By AllyFish , 4 days ago
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RE: 300 Liter Tank - Do I have to heat it all?
Cross references for @martingale Background discussi...
By Transparent , 4 days ago
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@ecobaker May I ask a question of you please. I too hav...
By Papahuhu , 4 days ago
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It's unclear to me how the Smart Control project work b...
By Transparent , 5 days ago
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RE: Have Consumers Been Lied to About the Efficiency of Heat Pumps Made in China?
@pavel, this isn't about discrediting Chinese products....
By Mars , 5 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
We had an excellent four months (11/3 to 15/7) generati...
By JulianC , 1 week ago
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RE: Is this just haze or something more?
I think the present somewhat cooler hazy days show the ...
By Judith , 1 week ago
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RE: My misgivings about installing ASHP and solar panels via the ECO4 scheme...
All noted and accepted and as I say I am sorry that you...
By JamesPa , 1 week ago
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I think it is very much me that is sitting outside the ...
By Grantmethestrength , 1 week ago