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Last seen: Sep 23, 2026
Best consumption will almost always be obtained by tuning the WC to match the load (ie not on/off except as a temperature limiter when eg solar gain t...
Thats a result then! At 32C WC doesn't actually make that much difference, about 10% or less, whereas its more like 20% at 45C. So fixed flow...
Thinking about this a bit more, for a house like yours (which, based on your figures, has a high thermal mass and is thus essentially an energy integr...
As you say heat loss calculators are a tool we have and when you can't make a measurement you have no choice but to resort to a model. I thin...
Interesting graph. The early cycles look like they might be minimum output cycling, but after 9pm (and particularly at midnight) its gets a bit more ...
I was faintly conscious that you had come to the conclusion that it was in fact undersized, but not sure on what basis. I wouldn't trust the Freedom ...
Did I miss some data on the heat loss of @cathoderay 's house. I don't recall seeing an experimentally determined value (and I think you know what I ...
Do you know it isnt matching demand, so far as I can see your IAT is staying constant which suggests it is. Edit - Oh - I see what you mean, can...
If the house is warm then its spending its time at min capacity because that's all the energy you need to keep LWT within the set bounds. Sure, cycl...
I completely agree with the last sentence, and have said so on this thread, but... (Almost) without doubt there are circumstances where setback saves ...
In short, the RWT. The emitter loss determines how much the water temperature falls during its passage through the emitters. The heat pump will (or ...
The demand, which is set by the emitters. The heat pump is a slave to the house, not the other way round!
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Degrees of Separation
Latest Posts
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RE: Solar Power Output – Let’s Compare Generation Figures
@downfield I was seriously considering Tide Lifestyl...
By Papahuhu , 2 hours ago
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RE: Passiv Smart Thermostat - Help & Forum Support
Thanks Will. I'll probably be a week or so before get...
By Singlespeed , 4 hours ago
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RE: Cooling using an air to water heat pump
From experience this summer, a single-split A2A unit on...
By Rob of York , 11 hours ago
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@mrkfm, I’m definitely not trying to put anyone off get...
By Mars , 1 day ago
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RE: Why are ASHP installs so expensive?
Posted by: @springswood I confess to becoming a litt...
By Rob of York , 1 day ago
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Analysis of the economics of switching to an A2W ASHP compared to other heat sources
This post aims to analyse the economics of installing, ...
By Rob of York , 1 day ago
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RE: Cooling with air to water heat pumps
@editor does that mean you have to have two separate ex...
By mrkfm , 2 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
Posted by: @ian-s Could always use the money saved o...
By Rob of York , 2 days ago
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Depends on what controls the pump! Thats the whole poi...
By JamesPa , 3 days ago
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The positive reviews keep coming in for Britain's Heat ...
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RE: Next steps on my ASHP journey: Radiators and Pipework
I have one of these fitted which also allows you to reg...
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
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RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
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