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Last seen: Sep 20, 2026
I agree with @toodles. By way of a direct answer to your question, so you have a good reason to reject them and look elsewhere. I adopted the appro...
It provides extra system volume which is useful for defrost but may well not be necessary. Have you any idea what volume of water you have in your se...
@anca1808 Just to give you some comfort and set expectations, my Vaillant heat pump is working out 13% cheaper than gas on a like for like basis, over...
Maintain the LWT by adjusting its heat output (if the required power is within its modulation capabilities) This is surely OK. Its adjusting...
Im sorry but I think you are getting confused. The statement above is either not correct or there is something wrong with your system that needs to b...
I cant remember what your WC curve showed, but it should follow that. This is only a few degrees change given that OAT doesnt vary that much Wit...
OK I found the original post about 4.88kW and I also agree with @editor above. Firstly It wont help to operate with the thermostat as opposed to on ...
Im sorry to hear about your troubles but its definitely good that the buffer and secondary pump has been removed. You are on the right path, keep the...
The Mitsubishi R29O pump has 2 compressors to achieve exactly that. Sofaik the only domestic one so far to do this
@anca1808 Lots of ideas above about what could be causing your issues. Nobody, including me, can be definitive because we don't have your system in...
I concur in principle with @old_scientist however there are some points to consider 1. your house has a heat input other than the heating, due to wa...
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Latest Posts
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RE: Next steps on my ASHP journey: Radiators and Pipework
First up once I have a flow meter fitted is to simply m...
By Rob of York , 1 hour 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 , 1 day ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 1 day 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 , 1 day 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 , 1 day 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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Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 3 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 , 3 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


