Last seen: Aug 6, 2025
This is a very interesting thread. Our ashp is being fitted soon, and we’re going onto OE cosy and using our battery to charge up to get over the peak...
@transparent I did comment but I would get an E at best since I didn’t answer all of the questions in sections 1& 3 and didn’t touch 2. My input...
@roel You also may already have a buffer which can also be called a low loss header. @johnmo put in some schematics above. You might be able to trace ...
Derek’s approach (as usual) is an excellent one. You do not need a buffer, just a volumiser. Once you understand how your system balances up then it’s...
I was thinking of your analysis but I couldn’t recall who pointed it out and hence sorry I couldn’t give you credit. Sorry! There have been other st...
@pie eater the difference you can’t see will be air leakage usually. There are many assumptions about how many air changes per hour your house has due...
Aaaaaah, that’s gas boiler thinking! and the recipe for problems with ashp. As several people are explaining better then I can, an over-sized pump wil...
The reason the other heat pumps failed may be that the houses have zones, NOT good with heat pumps, and as the pumps is big then it needs a minimum wa...
Oh dear! Don't let them change radiator for lower wattage ones! There are experts on the forum who would like to see the full proposals. Can you upl...
@pie_eater our install date is in September we’ve just had some bigger radiators changed so far, (not all rooms needed larger). it is pure BS to say...
@lucia you can’t improve the emitters to get more wattage out of a heat pump. All you can do is put an electric fire on! or wear more clothes and l...
@lucia don’t whatever you do go with a 4kW Daikin, our annual gas bill of 18000kWh means we need a 6.7kW ashp your 16000 means you need a 5.5kW (ish) ...
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RE: Is your heat pump insured?
My home insurance renewal is due soon meaning I am doin...
By cathodeRay , 16 hours 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 , 18 hours ago
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RE: Planning Permission May 2025
Fair enough. I have read the legislation and MCS020a ...
By JamesPa , 18 hours 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 , 19 hours ago
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RE: How do I choose a single room MVHR to prevent losing heat in my bathroom ?
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RE: Octopus Cosy & Octopus EV + bidirectional smart tariff, together. What, eh?
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RE: ASHP heat output monitoring
@carlo - not much better, is it. It looks more like a u...
By cathodeRay , 2 days ago
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RE: Renewables & Heat Pumps in the News
this document extensively describes (in a non-blame, ne...
By Judith , 2 days ago
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RE: Ecodan - Legionella Operation Time and Target Temperature
Once the white plastic cap is removed, my immersion loo...
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RE: Replacing Refrigerant on Mitsubishi Heat Pump
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RE: Why do we need pressurised systems?
A good question @toodles. My old open thermal store and...
By AllyFish , 3 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 , 4 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 , 4 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 , 7 days 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 , 7 days 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 , 7 days ago
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I think it is very much me that is sitting outside the ...
By Grantmethestrength , 7 days ago