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Last seen: May 18, 2026
I looked for actual regulations some months ago, found none and indeed found some evidence that there are none, ie the rules are being devised up by t...
We are of course speaking hypothetically about how a 'friend' might go about the job, aren't we? 😉 Perhaps my greater...
Another good bout of cold weather should test whether the heat pump has sufficient capacity or not. That said, if the 'design temperature' was -3, th...
Thanks. The frogstar is the one Im potentially looking at. I do know a good electrician but I dont think he does solar. Whenever I have contacted ...
One more earthing question occurs to me. If, as now seems almost certain, the recommendation (requirement) with a TN-C-S or in practice a TN-S system...
Thats great thanks. TBH setting the low end of WC curve according to the design temperature has been very common (possibly even universal) p...
FWIW I started a thread here just a few days ago trying to understand the options for islanded (ie able to operate when grid disconnected) and non is...
Interesting. A higher DT of course means a higher flow temperature for any given average surface temperature (and thus output to room), thus reducing...
Interesting and great that you are able to run experiments. As a matter of interest what precisely do you mean by 'oversized'. Surely any emitters c...
In recent cold weather the curve might be your problem. If its 50 at -2 then below -2 the flow temp will flatline when ...
If I understand what you are saying correctly and the unit is well sized you should win the bet. My Arotherm, just in a normal house, is up to 1830 '...
No idea, don't even know if it does that's why I was hoping for an ideal expert. Halo doesn't really do what you need IMHO.
Latest Posts
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RE: Setback savings - fact or fiction?
Indeed, I can well imagine that a heat-pump based syste...
By PeterWurmsdobler , 24 minutes ago
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Loud noises in the night - and one for the toolbox?
I was woken at 5am on Sunday to a very loud noise, akin...
By JamesPa , 1 hour ago
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RE: Advice on Vaillant Sensocomfort
The latest Vaillant announcement I saw said that they w...
By JamesPa , 2 hours ago
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RE: Debugging my legionella immersion heater
I notice this (66 is rather hot) with my legionella cyc...
By JamesPa , 14 hours ago
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RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
@transparent I thought you would spot that wind turbine...
By Batpred , 14 hours ago
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UK warm homes plan - how can it be delivered?
@editor Sobering thoughts on your article on the workfo...
By Batpred , 16 hours ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@swwils there is no logic to oversizing a heat pump. It...
By AgentGeorge , 1 day ago
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RE: Vaillant Sensocomfort Time
Thank youy for the pointer. I think I have managed to ...
By ispookie666 , 2 days ago
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RE: Forum updates, announcements & issues
I have been doing a lot of work on the site lately and ...
By Mars , 2 days ago
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@majordennisbloodnok good advice, thanks for that.
By David999 , 2 days ago
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RE: My Grant R290 9kW Heat Pump Installation
I am following this thread with great interest and than...
By TaffontheTaff , 2 days ago
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RE: Sizing an ASHP; Heat loss and kW
You can't measure heat loss with a website. But you ca...
By JamesPa , 3 days ago
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RE: Estimating true heat loss from twelve months of consumption data
@ian33a — I have a sort of residual interest in this pr...
By cathodeRay , 3 days ago
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Hi, Thank you. So its a Daikin Altherma 3M...
By Lbart68 , 3 days ago
