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Last seen: Aug 16, 2026
To use the installers analogy of subsiding foundations, if I had bought a 4 year old house and it was starting to subside, I would expect the original...
@lucia The heat geek cheatsheet on the article only requires rudimental maths and will give you an idea. Using previous energy usage is very advant...
@lucia I would try and ascertain your own heat loss figure before they do, to get a good comparison to ensure you dont get lumbered with an oversize...
@judith Its a good argument for separating the heating and DHW SCOPs when comparing systems 🤔
As noone else has replied and its cold, I will do my best to answer you question :-). As long as you dont get freezing temperatures (and your heat pum...
My guess would be that the unit is measuring combined COP for heating and hot water. Therefore because now you are only heating water at a lower COP t...
My own personal opinion is that as long as you clear leaves, clean filter and check antifreeze conc ( if you have it) then it’s a lot of money for ver...
@jancold To add to what @toodles has said, you can imagine the phase change material as something like candle wax, which will melt before the maximum ...
@toodles Certainly another viable option!
@ianmk13 It just depends on individual circumstances. It’s not uncommon for a single person to live in a 3 bed house with no intention of moving and g...
@jamesw The MCS surveys can vary greatly so stick to your guns and find an installer who is willing to fit what you want. You will probably find some ...
It sounds like you have cracked it to me. You may need to factor in a small additional amount for domestic hot water heating. Given you are using weat...
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Degrees of Separation
Latest Posts
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Not a problem; that’s why I left it as it was. The pers...
By Majordennisbloodnok , 8 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 17 hours ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 2 days ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
D'oh - of course. I shouldn't post before my brain is f...
By Old_Scientist , 2 days ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 2 days ago
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 2 days ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 2 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 3 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 3 days ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 3 days ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 4 days ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 5 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 5 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 6 days ago
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