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Last seen: Mar 25, 2026
@sheriff-fatman Thank you for the additional information. Your system seems to be very similar to mine and it produces very similar results. I have us...
@jamespa Thank you, I have validated the temperature sensors and found them to be accurate. I am interested in suggestion c) that there are specifi...
@f1p Thank you. I have specifically asked Mitsubishi about PWM control, they have told me that it isn’t available if you have a third party cylinder. ...
@jamespa Thank you for the reply. I recognise that the data that I am using is not very accurate but it is good enough to show that the efficiency of ...
@f1p Yes it’s a 25% change in Delta T and hence a 25% change in output
@f1p I only have 1 pump the max flow is about 25 l/min, here's a table including flow rate, OAT, COP etc
@f1p That's a large difference in performance to my system
@jamespa Please would you explain In that case no surprise COP is only 3.1 if my understanding of autoadapt is correct" My understanding of auto adapt...
@f1p 17 Radiators with a combined output of 10.2kW at a delta T of 25C, i.e. flow of 45C room temp of 20C. Water heating represents about 5% of my o...
Correctly attached 28 Feb this time
I'll try again that was for 5 Feb MEL Pump App - Heat Pump Detailed Report
@f1 p. If I have done this correctly it should give the data for 28 Feb which has no defrost cycles, an OAT of about 7C and very stable operation ...
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Latest Posts
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RE: Jokes and fun posts about heat pumps and renewables
@transparent I’ve heard that that is why American cars ...
By Toodles , 3 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Have either quote provided room by room heat loss calcu...
By Old_Scientist , 17 hours ago
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@old_scientist if you are going DIY then you may wan...
By Papahuhu , 2 days ago
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RE: Indevolt Batteries UK Support & Info Thread
After a short while that was followed by the 'power war...
By JamesPa , 2 days ago
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RE: Samsung heat pump - data cable issue
That's well done. Cable is the correct type (LIYCY = 2x...
By bobflux , 2 days ago
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RE: Electricity price predictions
I agree, we will find out at the next budget whether th...
By Old_Scientist , 3 days ago
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RE: Missing flow temperature in Heat Geek proposal
@editor I went through HG website, so should be ok for ...
By sttpd1917 , 3 days ago
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Who did the Freedom Heat Pump cloud server and what did...
By Mars , 3 days ago
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RE: Who's your electricity provider and what's your tariff?
Reading between the lines of what octopus are doing wit...
By JamesPa , 3 days ago
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RE: Air to air bus grant installer anywhere
The through wall two hole ones have their place (listed...
By EtchedPixels , 3 days ago
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I hope it goes ok, Hon can be hard to set up IF the sof...
By Graham Hendra , 3 days ago
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@clockworks Hi, So there is a big difference between st...
By ASHP-BOBBA , 3 days ago
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@editor wellvery comprehensive answer. I will get all i...
By Keithb , 3 days ago
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RE: Advice on my Heat Pump Journey: Old Stone Built Detached Cottage
all good advice I will follow this up
By PaulC , 3 days ago
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Heat of vaporization of water is 2.25 MJ/kg (0.625 kWh/...
By bobflux , 4 days ago
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