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Last seen: Sep 17, 2026
@jeff The cost of an electric motor is pretty insignificant compared with cost of electricity it consumes in its operational lifetime. The cost of ins...
@jamespa I think you are right about a hotel type hot water feed. Hot water seems to return, see the secondary return shown in this section of dia...
@paullacey From the diagrams I assess you have 2 heat pumps plumbed in "tandem" but controlled in "cascade". What the second heat pump can do is the s...
@bontwoody "but after a minute the 3 way valved closed." I might be wrong but could it be a 3 port, 2 way valve with mid-position? Oper...
@grahamf To save wear and tear on the pump why could you not run weather comparison during the winter months only, and fixed temp. for the other month...
@jamespa Surely the problem will be grid undersupply i.e when the wind fails to blow just when you need it to! This is the problem that needs to ...
@jamespa or it might be related to the number of nuclear power stations closed over that time frame? Since 2008, five UK nuclear power stations have...
@jamespa had the closure of coal powered electricity generation had a part to play in general increase? Rapid Decline:Coal's share of the UK's elec...
@toodles, touché chez. /\
A question for Inspector Watson?
@guydeb I take it you've not explored the option of using a single phase to 3 phase converter to run a 18kW 3-phase heat pump. Instead of £44k on a gr...
@ecobaker I'm still thinking that something is triggering the valve to close. In cooling mode on the rad, what are you setting as the rad target tem...
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Degrees of Separation
Latest Posts
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The positive reviews keep coming in for Britain's Heat ...
By Mars , 8 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
I have one of these fitted which also allows you to reg...
By Old_Scientist , 12 hours ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
By JamesPa , 1 day ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I wouldn't be too concerned about the design ...
By Rob of York , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
By JamesPa , 2 days ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 2 days ago
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RE: Cascade System or larger single unit
@renewables345 I would say if it a new build it’s no mo...
By Aventus Eco , 2 days ago
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RE: Why are ASHP installs so expensive?
Posted by: @batpred There´s another aspect that coul...
By Rob of York , 2 days ago
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RE: Say hello and introduce yourself
@gz00, welcome to the forums. There’s a huge amount of ...
By Mars , 2 days ago
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RE: Home energy storage & battery register
1 fox ess lv5200 batteries, plus 2 more waiting to be i...
By Jimcub , 2 days ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 2 days ago
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My feed of random industrial auctions turned up this au...
By Prunus , 2 days ago
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We’ve just passed 20 million forum views! 🎉
It's official. The Renewable Heating Hub forums have of...
By Mars , 4 days ago
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RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
By Papahuhu , 5 days ago
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