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Last seen: Aug 20, 2026
I agree with the inference from this comment, namely that weather compensation has been mandated elsewhere for many decades. We didn't which, IMHO, w...
They definitely can be run on pure WC, and arguably its the best method (albeit probably using a temperature sensor as a limiter). However they have ...
Which are... Is there even a heat pump available that either doesnt have an internal IAT sensor or cant take an external thermostat input as a limit s...
@jancold I tend to agree with your analysis The summary says this: Class I – A room thermostat that controls the on/off operation of a heat...
I agree that the UK heating industry is well behind the curve, which accounts in part for the poor heat pump installations that plague this site. The...
Pump speed needs to be sufficient to carry away the energy, any less wont do, any more is wasting energy. The energy carried away is flow rate (l/s)...
That's exactly what my analysis above would predict. After the rise in oat the bit of the house you live in continues, for a while, to lose energy t...
This is definitely an interesting scenario. What I think happens is this. The house fabric starts (when it's cold) with a thermal gradient continual...
Phew! I thought I was going mad. In terms of #2 rapidly warming OAT is an interesting phenomenon in terms of understanding the thermal dynamics of a...
I'm now a bit confused. I thought we had more or less proved that the problem lies with the water pump and thus there is insufficient flow of heat fr...
More expensive, larger, louder and won't modulate down so low and are thus less efficient for space heating if the house doesn't need it. If you real...
Yes, sorry for any confusion. 10C is sometimes quoted as the temp of incoming mains (being, I presume, roughly the temp underground at the level the ...
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Degrees of Separation
Latest Posts
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 10 hours ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 16 hours ago
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At the risk of going on: A slight side issue for a foru...
By Bart , 22 hours ago
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 24 hours ago
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RE: Mitsubishi Ecodan FTC6 settings
The Mitsi remote thermostat should not be plugged into ...
By F1p , 2 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@lizzie Thank you, very interesting and useful informat...
By Toodles , 2 days ago
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RE: PV and battery long payback - sense check query
@jamespa I was just commenting on the speed, not sug...
By Batpred , 2 days ago
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Readers here please note that Derril Water and many oth...
By Transparent , 2 days ago
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RE: Advice on Vaillant Sensocomfort
Oops, I meant Sensocomfort (the UI to the controls)
By Batpred , 2 days ago
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RE: Heat Pump Training vs. Real-World Installation
Our instal was very much the opposite. White haired blo...
By Batpred , 2 days ago
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RE: Flushing system, cleaning and inhibitor
While skim reading a manual for our Vaillant HW tank, I...
By Batpred , 2 days ago
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RE: 'Chinese Diesel Heater' to heat the home .....
Old thread but I'm new to the forum so new to me. How...
By BlizzardGreen , 3 days ago
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I'm not sure why you would want to make it more difficu...
By JamesPa , 3 days ago
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