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Last seen: Sep 19, 2026
FWIW my flow crashed when I started my system up in July to attempt cooling for the first time, the space heating part of it having sat around doing n...
If you screw them right down yes, but not if you don't. The ones that came with my TRV4s actually have moulded arrows on them labelled ,+/-
I dont have them I balanced on the LSVs. Its a bit fiddly because they typically only make a difference in the last turn to half a turn (see heat Gee...
No vibration issue. However when its minus temperatures and compressor modulation >80% there is noticeable compressor noise. The rest of the time...
My single Mitsubishi ilife2, which is otherwise perfection, suffers from exactly this problem and the threshold (30C) isn't adjustable. I've just (ye...
The first chart in your post above shows average 0.25kWh consumption. The second confirms that the unit is delivering less than 1kW output. Yet the ...
You should be getting better than that at this time of year even though it will be cycling, unless it's really cycling a lot (short cycling). Can you...
I run my Vaillant on either expanded mode (either end of the season when solar gain is a 'problem') or no room influence. Certainly on 'no room influ...
You are correct you dont need the second pump if there is no LLH/Buffer (unless there is a 'head' problem with your downstream system) Its entirely ...
He may need to tweak a couple of settings. There is definitely on the r290 a setting for no system separation/buffer/llh. Don't know what it does (I...
I love (and will use) that analogy!
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Latest Posts
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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 , 57 minutes 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 hour 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 hours ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 3 hours 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 , 4 hours 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 , 9 hours ago
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RE: Say hello and introduce yourself
@gz00, welcome to the forums. There’s a huge amount of ...
By Mars , 20 hours 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 , 22 hours ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 23 hours ago
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My feed of random industrial auctions turned up this au...
By Prunus , 1 day ago
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Thank you @majordennisbloodnok – that means a lot, part...
By Mars , 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 , 2 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 , 4 days ago
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 4 days ago


