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Last seen: Oct 24, 2026
Agree (assuming that 'draw' in the second sentence should read 'deliver'). So in the second instance at COP=4.5, 81kWh would be delivered for 12k...
Referring to the above Im going to try to clear up some basics, with apologies to any physicists or engineers reading! Firstly energy is measured (f...
If oversized then it is indeed quite possible that an overnight setback will save energy, because you are reducing the inherent inefficiency of cyclin...
If the energy is delivered at cop4 is xkWh then you must supply x/4kWh. If the same amount of energy is delivered at cop 6 you must supply x/6kWh. I...
Er no, you are confusing power and energy. You pay for energy not power. If 24kWh is required then the input energy is 24/cop. So if the cop is 6...
Sorry but that is simply not true and worse still is quite seriously misleading. Whilst the heating is off the house continues to lose heat. It l...
I just ran the numbers through my WC simulator. This calculates, based on Ecodan R32 data, the efficiency gain from various WC curves relative to fix...
It is a cop out and as I say upthread will incur a penalty of 3-6% or more if it's more than a a couple of degrees out. However installers don't was...
This is the 'alternative method' I refer to in a post above. Care needs to be taken with the choice of room stat. Some 'clever' ones, as they appro...
According to his post a few pages back the speeds of both pumps are controlled by an Arduino based system. I did ask what behaviour it targets but go...
Thanks. Doing this would, as you say, eliminate another variable and I did consider suggesting it (and, if this were my system, it is what I would do...
@derek-m - You mean like he has been doing for the last 76 pages, and mine, and that of several other very kind folk? @cathoderay - I tried that ...
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Latest Posts
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RE: New Build 3 Phase or 1Phase
@e-a-west Given that your new build is 144 sqm and that...
By Rob of York , 2 hours ago
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RE: How will removing the standing charge on gas bills benefit heat pumps?
I'm not sure it makes much of a difference to heat-pump...
By Temperature_Gradient , 13 hours ago
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@editor Ouch, sorry to re start the tick. I had assume...
By DavidB , 14 hours ago
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RE: Say hello and introduce yourself
@e-a-west as the good Major said, welcome to the forums...
By Mars , 15 hours ago
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RE: How much of your renewable and home setup would still work if the internet went down?
Yes I actually have a copy of a tool that whenever a ce...
By EtchedPixels , 1 day ago
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RE: Indevolt Batteries UK Support & Info Thread
@editor Hi, To resolve this, please tap on the A...
By Indevolt Tech , 1 day ago
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RE: Double or Triple Glazed Windows?
Posted by: @singlespeed With 9 years repairing windo...
By Rob of York , 2 days ago
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@transparent we’re still running a secure version of PH...
By Mars , 2 days ago
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RE: How quickly would you want/expect heat recovery to take from setback?
Much longer than that here. The heating isn't even on. ...
By bobflux , 3 days ago
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RE: Passiv Smart Thermostat - Help & Forum Support
Obviously the weather is changeable but there's a defin...
By Singlespeed , 3 days ago
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@rob-of-york I must admit that when we had a Daikin hea...
By Toodles , 3 days ago
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RE: Forum updates, announcements & issues
Get the Renewable Heating Hub heads-up on WhatsApp. I...
By Mars , 3 days ago
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RE: Safety study for plug in batteries out to tender - looks like Q3 2027 at best before legal
@editor I pointed out to the one of the Fuse execs that...
By dansus , 3 days ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews As well as loft insulation, there are othe...
By Rob of York , 3 days ago
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