
Last seen: Sep 10, 2025
@tried2fail and @batalto (and anyone else who is using or may use the kWh/COP stats) - as you know this is still work in progress, a polite way of say...
And the rest of us seize the opportunity to throw up in the waste paper bin. I suspect whoever wrote that twaddle has a passion for seizing opportunit...
@batalto - I'm guessing chat gpt means- always engaged (as hopefully you can see from the link padding). @derek-m - here's a crucial bit of code tha...
Very true. There is another indirect benefit to fitting heat pumps: it focuses the mind more sharply on heat loss reduction. With oil, I tolerated a...
I agree, and you were right to bring this up, along with the geographical lottery of supplies. Not only will it create a lot of real personal hardship...
FWIW, I have just calculated my global (heating and DHW combined) COP from 25th Nov 2022 (when I started collecting sufficient data) to the beginning ...
No, it was just a sort of global in the middle figure, a general case, for a general case estimate. I suspect mine is less. The trailing three hour mo...
@majordennisbloodnok - you make a very good point, I haven't made it clear enough that this is all voluntary, you don't have to do it. I will make an ...
Mars - that's a huge amount of oil - I used not that much more (between 1000 and 1200 litres over a whole heating season to heat my old leaky building...
Fair point, but it currently means ASHPs and oil are neck and neck per kWh. I may or may not have been a bit generous with the COP I used, and a bit h...
I don't think so, at least for oil, don't know about logs. Assume: cost of electricity = 34p per kWh used, COP of 3.5 => cost per delivered kWh =...
@tried2fail - good to hear it is working. Note I changed the line of code that does the produced/used division a few times, trying to get it to stop p...
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RE: Midea ASHP – how to set weather compensation
I think it is a bug in the code, it comes on even when ...
By cathodeRay , 4 hours ago
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@ashp-bobba wish you lived closer to Wiltshire! My inst...
By pash44pump , 5 hours ago
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RE: COP is not the only measure of efficiency
@jamespetts Interesting post, thanks. Here are my thou...
By GrahamF , 5 hours ago
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RE: Who’s Caved and Switched the Heating On Already?
@editor So… who’s given in and turned the heating on al...
By Lucia , 5 hours ago
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
I am pleased to say at 4pm today we have added another ...
By ASHP-BOBBA , 6 hours ago
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RE: Buffers, hot water and cooling
@jamespa Your reasonably close! Especially with warmer ...
By dgclimatecontrol , 7 hours ago
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RE: Renewables & Heat Pumps in the News
To unpack this a little.... 1) how many of us in this...
By Lucia , 14 hours ago
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RE: Vaillant aroTherm Plus 10kW thoughts?
@realevil the fans and fan speed / coil size (height, w...
By ASHP-BOBBA , 1 day ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
By ASHP-BOBBA , 1 day ago
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RE: Anyone still weathering it out with Agile?
@toodles I guess it all comes down to import averages. ...
By Tim441 , 1 day ago
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RE: 300 Liter Tank - Do I have to heat it all?
The size of DHW tank affects the anti-legionella cycle....
By Transparent , 1 day ago
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
By HCas , 1 day ago
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RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
By jamespetts , 1 day ago
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RE: Solar Power Output – Let’s Compare Generation Figures
My system installed in July 2024 has produced 6.4mWh in...
By jamespetts , 1 day ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 2 days ago
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 2 days ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 3 days ago
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RE: Can you help with our research: solar panels, EV chargers, home batteries, heat pumps?
Just done your survey!
By Judith , 3 days ago
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RE: Failing heat pump system - seeking thoughts on a rebuild
@cleardene-ashp just thinking about your issues here. Y...
By Judith , 3 days ago
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