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Last seen: Dec 18, 2022
@cathoderay Problem at the moment IMHO is that there are precious few good installers and too many double glazing salesmen. And they must be MCS cert...
@derek-m Perhaps it’s me, now I have had a play with your spreadsheet, but if I reduce the DeltaT water temp to 30C the output falls off a cliff to 21...
@derek-m thx for that. I’ll apply those equations to my radiator table. Meanwhile just putting in my total radiator output and my heat loss gives me a...
@cathoderay the kitchen and lounge have 2 rads but 1 heat loss and all the numbers stack up. I have 2 spreadsheets for heat loss so I am making sure...
@derek-m I'll look at the data and get a representation and yes - its a WB 42CDi so 92%
@cathoderay so I have done as you suggest. Heat Loss Q with a DeltaT of 30C (-5C to 25C) my whole envelope heat loss came to 5400w and room by room ...
@derek-m EDF installed smart meters a year ago so I could do just that. Despite revisits the gas meter never worked and apparently won't until they co...
@cathoderay thx, I'll give that a go later - could be interesting.
@transparent you want weather data? I can give 3 years of history and real time from a Davis VP+ station data and graphs e.g.. Solar thermal isn't...
@julianc Hi, our boiler temp has always been set at around 50C and it heats the house just fine. It only goes above that if there has been HW demand.
@transparent - Thx. I have just made a detailed post to the ASHP section here. I do have a recent EPC but of course that tells you nothing. I did a ...
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Latest Posts
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RE: Harvest Thermal - ASHP with a smart thermal battery
As its using ToU tarrifs then its totally believable so...
By JamesPa , 1 hour ago
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Why do you want to maintain a specific deltaT? The out...
By JamesPa , 1 hour ago
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RE: Heat pump installation quotations
@batpred Excellent, thank you very much!
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Hopefully this will answer your question. To...
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RE: Help me keep the faith with my air source heat pump installation
I would be interested to find out if others do this and...
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Don't you dare. You just carry on as you are; as @batpr...
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
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