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Last seen: Sep 18, 2026
@alec-morrow I agree, but there are two different things people use controllers for. One is temperature control, ie the core control loop of when to...
@ianjrw As mentioned above, can you ask your installer about using the heatpump's own controller? What brand of heatpump are they suggesting? Let m...
I don't know yet. Let me explain... I was in exactly the same situation 3 months ago - lead times on the Ecodan cylinders were out to 12 weeks and ...
@derek-m The integer overflows are just warnings, and I don't think they're the source of the problem. It seems to be saying is the program is too bi...
I need to work on my Hungarian, but some wild guesses that it could be either a problem with communication with the Arduino - perhaps the programming ...
It's completely nuts. This is the compressor speed of my Grant (aka Chofu) ASHP, using the Honeywell Lyric on/off controller the installer supplied. ...
To add, another thing is the sensitivity of the occupants. I specifically chose a larger double-fan heat pump because it was quieter (60dB) than a sm...
Hi Mars, I can't help but feel conflicted about this. I'd say there are several factors in play for a heat pump install. Site: the type of hous...
An alternative approach to using glycol is to use anti-freeze valves. Basically you put these at the lowest point of the ASHP outdoor circuit, and th...
You will probably need to talk to distributors, since they aren't typically a part stocked in everyone plumbing warehouse. Orion Air Sales have the F...
The way Grant do it, they have a traditional heating thermostat (like a boiler) to provide 'heat please' and 'hot water please' inputs to the heat pum...
At the end of the day it's all about tariffs. Might not be the cheapest, but a tariff to suit your use case - eg cheap EV charging overnight. Obviou...
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Degrees of Separation
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 , 6 hours 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 , 6 hours 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 , 7 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 , 8 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 , 9 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 , 14 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 , 1 day 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 , 1 day ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 1 day 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
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