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Last seen: Oct 11, 2025
Spoke to a representative of Joule today. He confirmed the volumiser was designed in to allow more volume for the defrost cycle. He said that the co...
sure, he's currently on holiday...
@old_scientist Thanks. We came to this conclusion earlier, but good to see it confirms our thoughts.Note, placing the tank as suggested in the article...
@derek-m Sounds like a good approach. Would you still suggest changing the volumiser into a buffer tank to assure a defrost cycle? At one occasion...
Many thanks @johnmo for the clarification. This makes it all a bit more clear to me. We seem to have a volumiser on the combined flow from the AS...
Below some photographs of my system. Had a chat this morning with the plumber and he seems open for suggestions. He claimed the volumiser is the...
@johnmo Ah, didn't know it's called a volumiser when placed upstream of the diverter, anyway extacly my point heating 50L for no reason. I ...
I agree we need the buffer tank when using thermostats (not ideal), but my main question is, should it be placed in the primary circuit i.e. in series...
@johnmo Agree. It's a 180m2 bungalow with modern 150mm cavity insulation.When questioned the developer, he said 'well, just to be sure it will handle...
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Latest Posts
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RE: Jokes and fun posts about heat pumps and renewables
Plenty of butts 'round 'ere but
By Transparent , 5 minutes 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 , 13 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



