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Last seen: Nov 11, 2026
Are you sure. Where does the defrost energy come from on that case? Most stop the fan but leave the primary pump going thus extracting the defrost ...
Personally I would want them inside the heated envelope if possible. Then the heat loss is useful during the heating season. Obviously its a bit sit...
I persuaded my installer that heat loss from the adjacent hallway plus steam when you actually take a bath/shower was sufficient (in order that we did...
@sandman1600 just looking at the plots here it looks to me like there is in fact a range of outside temperatures where it does not cycle, casting doub...
If you think your heat loss is between 4.5 and 8.5, the r290 is probably a goodun because of its.unusually large modulation range, due to having two c...
Further to the above here is a template for what you might say if you wish to decline sign off. ? indicates info from melcloud or elsewhere, or refer...
I should add that I still think you can get it working well as it is, so if you don't think it's worth trying to press the installer then let's focus ...
@sandman1600 Whilst I agree with hat you may end up batch heating at a higher ft, at this stage I would continue to get to the ft that just heats th...
That's important. Hold onto it, gather any evidence. If somehow that can be combined with operational evidence then you may have a chance. Does m...
If you are going to have the discussion with the installers then I have some thoughts: it may be worth waiting until you have more data and have t...
@sandman1600 PS. I just checked your EPC, Its F rated with the potential for D. Its interesting to note that much of the fabric is 'assumed' ie t...
The total at the bottom of the 'heat loss calculations' column is why they specced 14kW. I note that the design FT is 45, which begs the question - w...
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Latest Posts
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RE: Buffer tank on a 2 x 14kw Ecodan system
Yeah, someone dropped a bucketload of circulators on th...
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RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
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RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
@batpred I mentioned earlier that targeting the payment...
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RE: Why don't people choose heat pumps?
@rob-of-york The Panasonic units also have a microscopi...
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
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Six books in three years and I think I’ve now covered j...
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RE: Grant Aerona3 13kw - Buffer Tank - Heating Journey
@heymikey Well done in achieving as nearer a match acro...
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Grant Aerona - Weather Compensation and Schedules
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RE: How much of your renewable and home setup would still work if the internet went down?
I think you're right! 🤨
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I think that CCGT plant in Lingen is more likely to suc...
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RE: Heat Geek installations: share your experiences
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