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Last seen: Jan 29, 2026
I found this schematic in the Midea engineering data document. The basics design can viewed as consists of four parts: 1. A compressor, condenser, f...
When the heat pump starts from cold the LWT and RWT are both low, therefore it does not have to produce very high temperature output. I’ve included th...
I would have thought that in the context posted it was obviously the power shown on the graphs rather than the surrounding summary data that I was dis...
Well, I beg to differ. The important thing is to understand how code is designed. It seems to me the COP is irrelevant once the compressor stops but t...
There is a setting for how long after the DHW reaches the required temperature to run the pump (defaults to 5 minutes but can be read). The DHW temper...
I posted some photos of the minute by minute ASHP circuit power readings during the startup of the heating a few days ago. I doubt it is very helpful ...
One day we won’t be able to have electric motors, transformers or anything that causes a problem. We will probably have to have our own storage and on...
@transparent Using the billing information of 1.32kWh this morning when the 5kW inverter switches to battery charging at 00:45 and with an assumed b...
Yesterday the electrician completed the distribution board (consumer unit) upgrade started by having solar+batteries and Zappi EV charger installed at...
I had all my 22 rads replaced with mostly triples and a few double. I see P1 rads listed above. My Midea 12kW ASHP mostly runs at 40c leaving as the t...
@transparent, I agreed the time of GO with the installer and we then inset it 15 minutes. I know from billing that the timing is accurate. I have a...
@transparent My installer has set the system to charge during a window from 00:45 to 4:15. Everything runs from the grid in that period even if the ba...
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
Our Cosy 9 has been in hush mode for three days. So far...
By KevH , 2 hours ago
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RE: Rate the quality of your heat pump design and installation
I had a Worcester Bosch compress 2000 fitted March 2026...
By Josejo , 3 hours ago
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RE: Air-to-air heat pumps - best models and installers
Are you creating a whole new category for A2A?
By ASHP-BOBBA , 6 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
There isn’t as far as I know, @djh, but you’re welcome ...
By Majordennisbloodnok , 18 hours ago
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RE: Can anyone explain the following behaviour with a Grant Aerona 3 R30 / Smart Controller?
Final Update. Yesterday, I was going through the moti...
By Unsure , 20 hours ago
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RE: How much can an east/west solar solar system be oversized?
Best performance occurs with PV string near inverter no...
By bobflux , 20 hours ago
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RE: Forum updates, announcements & issues
Thank you Mars for all your dedication to improvements;...
By Toodles , 23 hours ago
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RE: Who do I complain to about a poor ECO4 installation, can anyone advise?
Take it one step at a time. If you can get the dhw and...
By JamesPa , 1 day ago
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RE: Selling 2 x Kensa Shoebox 7kw GSHP (New)
Hi Jain, we’ve got an ashp so I’m afraid we won’t be yo...
By Judith , 1 day ago
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No buffer or low loss header Grant controller in sens...
By JamesPa , 2 days ago
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RE: Are We Sleepwalking Into Another Race to the Bottom?
That's an amazing job to get all that in there! A truly...
By Batpred , 2 days ago
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RE: Anyone concerned about GivEnergy?
Thanks for your advice - I'll keep trying with the inst...
By JohnDwyer , 2 days ago
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RE: Plug and play solar. Thoughts?
I am also yet to find a case where an installation that...
By Batpred , 2 days ago
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RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt
This is what I got from OVO. At least it was quick.. ...
By Batpred , 2 days ago
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RE: IVT greenline HT Plus E - Circulation Pump Constantly On
Welcome to the forums. Irrespective of which brand yo...
By Mars , 3 days ago
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RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?
Oh, how I love these old scientists!I'm in with your 5 ...
By LeJamaisContent , 3 days ago
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RE: Jokes and fun posts about heat pumps and renewables
@jamespa Someone who is not easily phased I suppose.
By Toodles , 3 days ago
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@downfield Once OE had removed our gas meter and capped...
By Toodles , 3 days ago
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Living with a Low Loss Header (Or Measure For Measure, it’s All About the Pump)
I know, low loss headers (LLHs) aren’t necessarily ‘low...
By Toodles , 3 days ago
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RE: What is the main ‘dictator’ of Agile’s unit price?
After seeing umpteen negative price slots again today, ...
By ChandyKris , 3 days ago
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RE: The Reality Behind a Failed Heat Pump Installation – and an IWA Insurance Rejection
@ian-w Getting back to the problem in hand, what do yo...
By JamesPa , 3 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@papahuhu Generally, I leave Homely to take care of mat...
By Toodles , 4 days ago


