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Last seen: Nov 4, 2026
@jamespa — I agree the OP needs to make his plan of action clear. I've often said there is only one number that really matters, the IAT (indoor air te...
Heresy! Unless the property is huge, which it isn't, it won't take long to do a heat loss (half a day or so for a first timer, particularly with mod...
You only need dimensions, U-values (the spreadsheet has some standard ones built into it) and air change assumptions to use the calculator, some of th...
@newby — thank you for the extra details. It is rather ominous that the developer/builder wont release the heat loss calculations. You could save your...
@newby — can you say what your estimated heat loss is, how it was calculated (eg speardsheet, if so which one) and what you installed heat pump power ...
Yes and no for me. I do have meters and sensors, but most of them are Midea hardware. What I do is collect more of that data (ie more variables) at mi...
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Degrees of Separation
Latest Posts
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
... And that's being generous! I'll tell you a littl...
By SusannaSaunders , 6 hours ago
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RE: Adding data centre electricity costs to domestic energy bills?
never ceases to amaze me.. Keeping steel works going ...
By Batpred , 7 hours ago
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RE: Electricity price predictions
great session Reminds me why some politicians can be ha...
By Batpred , 7 hours ago
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RE: Boiler Upgrade Scheme funding reduced by circa £750 million in 2026 budget
Absolutely agree. The massive Hager CU my vaillant requ...
By Batpred , 7 hours ago
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RE: Why don't people choose heat pumps?
With a heatpump tariff, it should be cheaper to operate...
By Batpred , 7 hours ago
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RE: How much of your renewable and home setup would still work if the internet went down?
absolutely agree. even if many providers see that extra...
By Batpred , 8 hours ago
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RE: Octopussy cosy 6 experience
People who have a Cosy appear generally to be happy wit...
By JamesPa , 11 hours ago
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I thought the cr*p came first and the biofuel came afte...
By Majordennisbloodnok , 15 hours ago
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RE: Aerotherm and weather compensation
@jamespa I replied yesterday with detailed readings whi...
By DavidB , 2 days ago
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RE: Marvel Heating liquidation
@editor This is an important point. each winter, you...
By davidnolan22 , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
Very nice. we’ve been super soggy here, but rather m...
By Papahuhu , 3 days ago
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RE: DIY powerflushing tutorial
Interesting! I toyed with the idea too. But I installed...
By bobflux , 4 days ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews Agree with the others on sequence: loft first...
By mk1234 , 4 days ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
Heating been on for 4 weeks now, continuous. It's 6C o...
By trebor12345 , 5 days ago
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