
Last seen: Sep 15, 2025
I agree that is what the Engineering databook shows (page 45, 9050W to confirm we're on the same page) but I am not sure what the max/norm/min rows re...
Here's a rather ugly chart from the data logger's software showing the kitchen room temp during the overnight setback to 16 degrees on the room stat 2...
Thank you all very much for your comments which I will reply to shortly. In the mean time, here is some data from the recent power cut, which by coinc...
You're right, I should have labelled the axis, I hoped the title was enough, and it allowed a slightly larger plot area. Yes, it is kWh/week. I w...
I like to imagine I get the distinction most of the time, but the use of power (kW) for heat loss and energy (kWh) for energy use does leave me easily...
No, as I said in the post, I applied a curve (distribution) derived from recent weekly readings to the annual oil use. Note that the first chart is en...
Interesting, I stupidly didn't do that calculation. My calculated heat loss, done for the heat pump installation, is around 12.3kW, but that is also a...
The Met Office WOW website I mentioned has that. You need to register to download the data, but it is free to do so (csv format). I do it once a month...
I certainly welcome any such attempt! I think it may be considered an interesting case, often it is the anomalies that lead to better understanding, s...
The heat energy used (energy in) is measured, and accurately (meter on the oil delivery tanker, external dedicated kWh meter for the heat pump). The h...
Try the Met Office WOW website (<=link). You can search for a weather observation website near you and download the data (you have to register but ...
I don't think so. Consider the facts I presented (measured use), and the assumptions I made (efficiencies), and while the latter are only estimates, t...
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RE: Testing new controls/monitoring for Midea Clone ASHP
I doubt it, many 'improvements' are quite the opposite....
By cathodeRay , 2 hours ago
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RE: Electricity price predictions
@julianc Expressed as a flow diagram, I suspect one wou...
By Toodles , 2 hours ago
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RE: Big Changes Coming to Our Heat Pump System
@jamespa The dormitories at my boarding school (in Exet...
By Toodles , 2 hours ago
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RE: Who’s Caved and Switched the Heating On Already?
In the last week, the external temperature in south Man...
By GrahamF , 18 hours ago
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Ok. Two schools of thought. The first is to run the ...
By JamesPa , 18 hours ago
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@drei Willing as I am to help, I don't think I'm yet ...
By JamesPa , 19 hours ago
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RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
I hear you on the locality issue @transparent, and I ag...
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Selling 5 year old ASHP & Gas Combi Boiler - £590
Selling a 5-year-old Daikin Altherma Hybrid Air Source ...
By Paul G , 22 hours ago
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RE: Midea ASHP – how to set weather compensation
@pash44pump Referring to the problem of rooms with diff...
By Tasos , 23 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Er true, it should have read l/hr!
By JamesPa , 24 hours ago
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@damon thanks. I will do as you suggest. Hopefully I wi...
By bontwoody , 2 days ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Much of that is true in principle, but its not likely t...
By JamesPa , 3 days ago
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@dgclimatecontrol I attach the responses from 2 potenti...
By pash44pump , 3 days ago
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RE: Buffers, hot water and cooling
@dgclimatecontrol thanks, that's helpful.
By JamesPa , 4 days ago
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RE: Failing heat pump system - seeking thoughts on a rebuild
I realise im overdue an update on my situation. first...
By Cleardene-ashp , 4 days ago
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RE: Replacing Worcester oil boiler with an ASHP
@toodles thanks. I was told by the engineer that this h...
By JulianC , 4 days ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
A week later, I'm finally picking up this comment... ...
By Transparent , 4 days ago
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RE: COP is not the only measure of efficiency
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By Old_Scientist , 4 days ago
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
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