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Last seen: Nov 11, 2026
Can you explain this please, the heat pump manufacturers always specify COP according to LWT. The compressed gas must be hotter than the LWT otherwis...
There is absolutely nothing wrong with buffer tanks in principle. The problem lies with the execution which all too frequently, it seems, involves poo...
On the basis that 1l oil = 10kWh and 1cu m wood = 2500kWh, the total is between 25+10=35 and 40+10=50 MWh per annum. That's definitely in the same ge...
That's really scary, of all the settings it's the probably most important one, and one which the installers cannot possibly get right because they don...
Totally agree and I would be suspicious of the high loss estimates. Even if you did use the wood burners and know how much wood you burned you could ...
If you get outdoor temperatures outside the range where the curve has a slope then yes. So if your oat goes below -2 with any frequency I would adjus...
I think you are covering two points, namely water pump modulation and control strategy (weather compensation and/or room thermostats. I will deal wit...
Firstly thank you for the feedback, its always good to get. The only way I can see you could balance the temperatures would be to throttle the UFH. ...
In fairness I would expect the COP to change, because you are working the heat pump harder in setback (which is the whole basis of the argument that s...
@cliffhanger suggest you reread my post above, I edited it after you looked at it. I found a video which helps a bit, but Grant do seem to have come ...
@cliffhanger I have a pump with the 'factor' curves and, once you understand them they are easy to operate, easier in fact than the '4 point' system...
As others have implied, the latter (this is the most important thing to understand about heat pumps). In short the procedure is: Set all your...
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Latest Posts
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RE: Help me keep the faith with my air source heat pump installation
And even with that, it still hums ? Damn
By bobflux , 16 seconds ago
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RE: Why don't people choose heat pumps?
By humidity controls, by what level of variance and ran...
By SusannaSaunders , 1 hour ago
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RE: Buffer tank on a 2 x 14kw Ecodan system
Yeah, someone dropped a bucketload of circulators on th...
By bobflux , 5 hours ago
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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...
By Papahuhu , 19 hours ago
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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...
By Toodles , 20 hours ago
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RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
By SusannaSaunders , 23 hours ago
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Six books in three years and I think I’ve now covered j...
By Mars , 23 hours ago
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RE: Grant Aerona3 13kw - Buffer Tank - Heating Journey
@heymikey Well done in achieving as nearer a match acro...
By Toodles , 1 day ago
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Grant Aerona - Weather Compensation and Schedules
Im trying to set up a friends Grant Aerona. The WC curv...
By bontwoody , 2 days ago
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RE: Air-to-Air Heat Pumps & Air Conditioning: UK Heating and Cooling Q&A
@jamespa I agree, the efficiency of Cosy Cooler ought...
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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! 🤨
By Transparent , 3 days ago
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RE: Renewables & Heat Pumps in the News
ECO4 muddies the water somewhat, and then some. I thi...
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
If there is a drain nearby that's exactly what I would ...
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I think that CCGT plant in Lingen is more likely to suc...
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