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Last seen: Aug 22, 2026
Interesting, is this to get the house temp right or just the flow temp. Intuitively would have thought that the latter should be quite straightforwar...
Its not at all likely that cranking up the flow temperature to reduce the output of the heat pump is an efficient way to operate (unless of course you...
Interesting. It is of course in principle equally valid (although presumably achieved in practice by turning the 'wick' up or down to change LW...
Posted by: @derek-m ↑ The heat pump merely tries to supply sufficient energy to meet the demand. Yes. My view is simple, to think ...
As others have said 2 18kW units sounds like a massive overkill, even allowing for the overstated outputs. Someone suggested 2 16kW Mideas (which hav...
I would guess electronics 25-50W, pump 30-50W each. Fan is probably most of the rest. The electronics won't switch off during setback and there may ...
Presumably fan speed (and thus power drain) varies with compressor speed. I believe you said that your pump speed is constant and thus power consumpt...
I think a lot of people expect gas boilers to heat instantly, witness the prevelance of whacking the thermostat to max because they think this will so...
I think most, if not all, of this is spot on. Both the saving and the comfort are functions of the control strategy during recovery, and most heat pu...
Thanks for the vote of confidence, Im not sure its justified. I think the challenge here is that we are comparing a model in one condition with with...
Are they heating on warm and sunny days, or is this for DHW only, or are they cooling (in which case did the planning consent cover cooling). If its ...
I guess the authorities will say that it's covered by nuisance law which they will saw is robust. If you haven't already done so I would suggest you...
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Degrees of Separation
Latest Posts
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
Nought for nought is the very best you can do, as soon ...
By JamesPa , 8 hours ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 10 hours ago
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Britain’s Heat Pump Shitshow is now available to pre-or...
By Mars , 2 days ago
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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 , 3 days 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 , 3 days 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 , 4 days ago
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RE: Mitsubishi Ecodan FTC6 settings
The Mitsi remote thermostat should not be plugged into ...
By F1p , 4 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 , 5 days ago
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Readers here please note that Derril Water and many oth...
By Transparent , 5 days ago
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RE: Advice on Vaillant Sensocomfort
Oops, I meant Sensocomfort (the UI to the controls)
By Batpred , 5 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 , 5 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 , 5 days ago
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