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Last seen: Apr 15, 2026
hey @judith, which “open” battery systems might be on a potential future shortlist?
This for me raises the question of how economically sustainable a lot of renewable suppliers are. I’ve held off making a big investment in batteries b...
I settled on 9 kw after: 1. Doing heat loss calcs using free online calculators to give me an idea of the likely requirement 2. the installer got ...
Another quick update. As mentioned over the Christmas period I asked for a few quotes. I had some good calls with Heat Pump Installers and provided...
So an update - it's been a fun few days! Cold, but fun. We lucked out with the engineer Daikin provided for the visit on Thursday - it was Peter, wh...
Many thanks @judith. The engineer was from Daikin rather than an installer. His comment was that if it were his money, he would possibly consider re...
Thanks @bontwoody and yes, I think I probably can replace the old external pump with a new one for similar costs to yours. Were you tempted to upgra...
I don't have a battery yet, but with an ASHP / high consumption and Agile Octopus, there's quite a strong business case with a 5 to 7 year payback dep...
FWIW my 16kw Daikin split LT was installed in 2009! It was the Wild West back then… the installer went just before we even moved in…
I shall be following this topic with interest - I had no idea it might be possible to see what a system's real world COP is! I'd be happy if I could j...
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Latest Posts
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RE: Advice on my Heat Pump Journey: Old Stone Built Detached Cottage
OK Power (Watts) = Flow (in l/s) * Heat capacity of w...
By bobflux , 6 minutes ago
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RE: Indevolt Batteries UK Support & Info Thread
For the benefit of others who come across this discussi...
By Transparent , 33 minutes ago
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Heat capacity of water is 4180 J/(°C.liter), therefore ...
By bobflux , 55 minutes ago
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RE: Existing Solar Panel installation - structural roof calculation check
In our experience, the buyer usually pays for any surve...
By scrchngwsl , 2 hours ago
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RE: Vaillant Arotherm Pro vs new Plus
So with the dedicated Hager CU, flipping the big red bu...
By Batpred , 12 hours ago
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Well I usually do it by feel, which is a slight problem...
By Transparent , 16 hours ago
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@jeff I am well aware of the riskiness of such investme...
By Toodles , 19 hours ago
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Fully understood and entirely reasonable! On the home ...
By JamesPa , 1 day ago
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RE: Electricity price predictions
So I am really having difficulty trying to work out wha...
By bontwoody , 1 day ago
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Ok Well almost certainly it could be used instead of ...
By JamesPa , 2 days ago
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RE: Samsung heat pump - data cable issue
Samsung reference it as "RS485 - COMM" in my manual. ...
By Old_Scientist , 2 days ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Looks beautifully integrated.. We had our done as wel...
By Batpred , 2 days ago
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RE: SolarEdge SE5000H Inverter Failure
Update. My SolarEdge inverter was replaced yesterday wi...
By L8Again , 2 days ago
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For cooling a whole building, or even a big room with l...
By EtchedPixels , 3 days ago
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RE: Comms and power cabling to outside unit
@old_scientist 100%, the cover is for warrantied unit...
By Papahuhu , 3 days ago


