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Last seen: Jun 15, 2026
There seems to be plenty of evidence to support this. My measured loss is consistent with ach of 0.5-1 whereas the mcs calcs default to 2-3. ashp sy...
yes to both, probably. External controls for ashps (and many modern boilers) are largely superfluous and frequently counterproductive. The possible...
@solenoid it sounds like you are making progress. No need to hurry these things and please feel free to ask any questions.
I think you are right about the ebus stick. It's certainly possible to change at least some of the exposed vaillant parameters through the ha integr...
Yes, you can work out a lot from a plot of FT. Interesting that there were both deep and shallow defrosts, for reasons I dont understand.
OK thats a pity it would have been good to see if/how defrost changed as a result of switching off night shift and overnight there would have been ple...
My Vaillant was defrosting every 45-60mins overnight (chart shows FT). As you can see it doesnt fully recover from the defrosts because noise reducti...
Something odd about this diagram; the refrigerant is moving in the wrong direction for defrost - warm refrigerant from the compressor should be headin...
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Degrees of Separation
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For passivehaus btw you also need to consider just usin...
By EtchedPixels , 6 seconds ago
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RE: Help me keep the faith with my air source heat pump installation
I didn't know about those, they look like good pieces o...
By JamesPa , 3 hours ago
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@mkz, that's very helpful. Even if Urban Plumber are no...
By Majordennisbloodnok , 3 hours ago
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RE: Several AC coupled batteries
That is a good point, a manufacturers can stop trading,...
By Batpred , 3 hours ago
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My first question is why bother with the auto balancin...
By JamesPa , 4 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Hi @hanno - good question. The range of hybrid invert...
By Transparent , 4 hours ago
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RE: GivEnergy inverter tripping due to over-voltage?
@transparent the inverter was installed in 2021 and afa...
By Tim441 , 4 hours ago
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I share the same experience as @majordennisbloodnok hav...
By Old_Scientist , 5 hours ago
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RE: Say hello and introduce yourself
I hope so, @toodles. It's not often that we see a situa...
By Majordennisbloodnok , 8 hours ago
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RE: Heat pump design review please: 5 kW Vaillant aroTHERM Plus heat pump
@jamespa many thanks, definitely i will give the pre...
By ragtime27 , 19 hours ago
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RE: Heat pump installation quotations
@jamespa I noticed that in the Heat Geek design consult...
By Batpred , 21 hours ago
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RE: Electricity price predictions
Good point, I do expect the bonus of putting my energy ...
By Batpred , 1 day ago
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RE: Daikin ESPAltherma and Home Assistant installation
@bash, something we haven't touched on already relates ...
By Majordennisbloodnok , 1 day ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Vaillant arotherm plus 12kW. Installed March 2025. Ex...
By Harebell , 2 days ago
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