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Last seen: Nov 5, 2026
Thats encouraging. As I say normal motion in pipework should be inaudible, its valves and bends that cause noise. Swept bends are better than elbows...
@ecoste In that case there is something very wrong. 2.4kW consumption would normally require the heat pump to be running nearly flat out. If its ...
They are better but still difficult to read. Can you please upload the image files rather than pasting them as images, then they can be downloaded at...
Nice neat plumbing job! I cant see the plant room on the rather low resolution plan. Where is it? Also the key drawing 12327-1000030975 is too lo...
ah - not the greatest routing. Is it possible to insulate and/or isolate the pumps from the structure?
Not sure I agree with that. Thermodynamically lower deltaT=higher average emitter temperature for any given flow temperature = lower FT needed at t...
This looks odd: Heat transferred = F*DT*.0633=18*3*.0633=3.4kWPower consumed = 2.4kW 3.4kW delivered to the house is not unreasonable at ...
I think there may be some oddities about the COP reported by the app at present and possibly going forward. My app (v3.31 build 24435) no longer se...
Is it still cycling, at what FT/OAT? Mine appears currently to be at the 'sour spot'. OAT about 11C, still just cycling, COP 3.9, target FT ~32. I...
Is it possible there is air still trapped in the system. Mine took a month to clear and despite the presence of an auto bleed valve one radiator need...
I cant remember what Ecodan reports but some heat pumps report energy consumed and environmental gain. In this case cop = energy consumed/(energy co...
I would personally be sceptical about reaching any conclusion that goes against the norm of heat pumps. In the end the Cosy is a heat pump, subject t...
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Degrees of Separation
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
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By Watcher , 17 minutes ago
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RE: Why don't people choose heat pumps?
I have been putting together some material for a series...
By Batpred , 2 hours ago
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RE: How much of your renewable and home setup would still work if the internet went down?
Yes, in my case, the ISP hub is permanently there, they...
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RE: Electricity price predictions
@rob-of-york sounds like a term that Heidegger would...
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RE: Adding data centre electricity costs to domestic energy bills?
never ceases to amaze me.. Keeping steel works going ...
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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 , 14 hours ago
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RE: Octopussy cosy 6 experience
People who have a Cosy appear generally to be happy wit...
By JamesPa , 17 hours ago
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I thought the cr*p came first and the biofuel came afte...
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RE: Aerotherm and weather compensation
@jamespa I replied yesterday with detailed readings whi...
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RE: Marvel Heating liquidation
@editor This is an important point. each winter, you...
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RE: 15kw pump for 225m2 1990's house - over kill?
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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...
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