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Last seen: Sep 20, 2026
Welcome. If you provide some more information about the property and anything you have already found out I'm sure you will get some helpful ideas.
Thanks for the clarification. I am also neither an installer nor a heat pump designer! Just an enthusiastic homeowner with a background in physics a...
Ok thanks. Why is 8C ideal (and why is 2C a problem?)
Adia Thermal sort of advocate this approach and produce some hardware to aid the determination. In many cases however it will be obvious that an upg...
Thanks, its actually @ianmk13 that has the need so tagging him so he sees your post
Fair enough. With poor mains pressure the only advantage of a UVC is that it is sealed and so less likely to get general detritus in.
Interesting. COP of only 1 though for the reclaimed heat!
It certainly is with mine (Vaillant). The source of the defrost energy is basically the water in the system and during defrost the heat pump extract...
75C for the Vaillant. This is principally a function of the refrigerant and most if not all R290 heat pumps will do 70-75. You wouldn't want to oper...
Coil probably not large enough, although this can be overcome by 'plate loading' ie fitting a phe and pump to replace or supplement the coil. I deba...
I have the Vaillant. Pros: Compact Excellent and very flexible controller, much more so than Samsung appears to offer. Definitely no need for e...
I agree. I agree (how could I disagree!) and its the basis of any of my arguments and the occasional attempt at simulation.
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