Last seen: Oct 11, 2025
@adamk Its a bit complex: My 28mm primaries run for about 1.2m outside then pass through a wall into the utility room where they run for about 2m in...
I confess to the same misgivings! My installer fitted one so I have one, but would I fit one again, possibly not, or if I do as you say fit an isolat...
If you get an R290 pump you should be able to heat the tank to 65C which will give you 550l of water at 40C from a 300l tank. You probably don't want...
Lets look at this the other way round. If your loss is 5kW and your heat pump can do 6.5 (absolute worst case with the Vaillant so far as can be told...
Firstly welcome to the forums, I hope you will find us friendly and helpful. And congratulations for being interested in renewables. Hea...
Thats rather easy to understand, although it begs the question whether relocation is an option but Im sure @mars has already considered that! ...
I presume he needs that much!
I reckon the curved pipes may be the flexis, good idea to have them curved not perfectly straight I suspect.
I have one installed when my heat pump was done, connected to the cylinder feed (or it may be the cylinder return). The cylinder is on the first floo...
Latest Posts
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@agentgeorge Back to the Future with the flux capacitor...
By GrahamF , 1 hour ago
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RE: Heat loss calculations and how they work in conjunction with heat pump sizing
@jamespa unfortunately, I don't think heat loss calcula...
By GrahamF , 1 hour ago
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RE: Renewables & Heat Pumps in the News
I am not sure if many people would be running aircon or...
By Batpred , 4 hours ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
That will be producing significant losses due to phase ...
By Transparent , 4 hours ago
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RE: Isolating the system for a planned power cut
When I said we'd need to know more about the RCD, MCB a...
By Transparent , 4 hours ago
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RE: Radiator sizing for heat pump installation by British Gas - are these correct?
With the frvs, I assume looking at the blurb, they just...
By Bash , 6 hours ago
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Which tells us something (including possibly everything...
By cathodeRay , 6 hours ago
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RE: Flexi-Orb Heat Pump Scheme Update: Progress, Pilots and Why This Matters for Homeowners
Thanks for sharing. Sounds promising, ISO are indepe...
By Batpred , 10 hours ago
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RE: Specifying batteries, pv solar etc using ChatGPT
I have been positively surprised when I asked it to spe...
By Batpred , 11 hours ago
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Thank you. That simultaneously answers my question abou...
By Transparent , 14 hours ago
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RE: Heating Turned Off but Radiators Still Warm
What do you mean by 'turned off' exactly. Same questio...
By JamesPa , 15 hours ago
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RE: Low Flow Rate Error - 8 kW Ideal Logic ASHP - Help!
@wh0am3ye - OK, starting to make sense, but it does mea...
By cathodeRay , 15 hours ago
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@editor fortunately we have a boiling water tap in the ...
By bontwoody , 1 day ago
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RE: Heat Pump Installers: Competence, Illusion and the Hard Truth Homeowners Must Face
@Fiona, I really don’t want to disappoint you, but I ha...
By Mars , 1 day ago
