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Last seen: Feb 6, 2026
Hi @derek-m The Caldera one? Yes, I sort of tossed that one in, £12k is rather a lot. We are partially refurbishing our house, which is long and t...
Has anybody seriously considered installing a Sunamp heat battery? How about a Caldera system (though I don’t think these are available yet)?
@editor Thanks for this useful information, I wasn’t aware of this fuel. Regarding it’s green credentials, it appears to be derived from waste veget...
@editor I looked up some figures from our oil boiler spec. which might be useful for comparison. For the specified nozzle size, the oil usage rate i...
@derek-m Thats one of the things that I was thinking about, the amount of time the building is in use, presumably careful HP scheduling would help, ...
@mona Just some thoughts. It’s not clear to me what stage you are at in the process and how far along you have got. I’m just starting out looking ...
@mattengineer Did you progress this any further? Do you feel able to share the companies that you have contacted, experiences, etc? We are also ...
Hi @mona The following might be of some use as an initial guide, particularly the introductory bits, though it’s probably not aimed at the general p...
Would it be “Seasonal Auto Mode” in the installation menu? Seems to have upper and lower external temperatures and water heat flow temperatures, but a...
@bobbt9866 Sorry, I think that I may have caused more confusion. I was referring to my earlier post in which I was trying to support @anng and ref...
@bobbt9866 Thanks for providing the performance data, really useful. I did search for something like this before my earlier post, but couldn’t find ...
Not familiar with the FTC6, just trying to learn about the control systems, I’ll have to read the data sheet and more about weather compensation and a...
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@editor "The interesting bit is that many modern invert...
By Singlespeed , 6 minutes ago
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RE: Ecodan & MelCloud scheduling
With the prospect of warmer weather this week, I brough...
By downfield , 1 hour ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
I reached out to MCS directly last week on this and her...
By Mars , 2 hours ago
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Heat Pump Overpromising – What Were You Actually Told Before You Bought?
We're looking into overpromising in the heat pump indus...
By Mars , 2 hours ago
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RE: Heat Pump Operation in Summer - Valliant 7kW
Yes I use the LG to cool the slabs with underfloor he...
By bobflux , 3 hours ago
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Mentally you have to separate the ac side and the DC si...
By JamesPa , 16 hours ago
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RE: Help me keep the faith with my air source heat pump installation
My heating developed a really severe case of noise and ...
By JamesPa , 18 hours ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
@l2jad I was just thinking all things being equal. Our ...
By AndrewJ , 1 day ago
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RE: Heat Pump Manufacturers Recommending Buffer Tanks
Hopefully the ambient temperature sensor drives a weath...
By JamesPa , 2 days ago
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RE: How many people are happy with their ASHP and do you believe them?
Im looking into these and my figures. The think that I...
By JamesPa , 2 days ago
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Hi, Does anybody have experience with Heat Geek insta...
By sttpd1917 , 2 days ago
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I will soon be struggling. Admittedly it is the summer,...
By Batpred , 2 days ago
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RE: Indevolt Batteries UK Support & Info Thread
Not known yet. I've asked a local Councillor to follo...
By Transparent , 3 days ago
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Hard to tell but I think I have placed the arrow on wha...
By ASHP-BOBBA , 3 days ago



