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bontwoody
bontwoody
@bontwoody
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Noble Member
Joined: Mar 5, 2022
Last seen: Jul 6, 2025
Topics: 29 / Replies: 806
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RE: Advice on ASHP choice needed

Its a fair point that rooms these days can be multifunctional although in terms of heat pump output and heat loss, it would only be an issue on a coup...

12 months ago
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RE: Advice on ASHP choice needed

21C in the bedroom would be very warm , my wife would disown me! 18C is about average although many like it cooler! The sleep foundation say: The be...

12 months ago
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RE: Advice on ASHP choice needed

@pie_eater Is it one of these models? If so they all seem to do much better than 3kW at -7C OAT. Where did you get that figure from? I had a quick...

12 months ago
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RE: Advice on ASHP choice needed

@pie_eater "The Heat Geek cheat sheet estimates your heat loss to be between 4.4 and 8.8 kWMichael Podesta's quick and dirty method gives it as 4.7...

12 months ago
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RE: HP Cycling, Expected or Undesirable

LOL at least I can do my hobby out of the rain!

12 months ago
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RE: HP Cycling, Expected or Undesirable

@johnmo Thanks for the link. I am in effect running it in pure weather compensation mode as my samsung controller/thermostat is in my hall not my livi...

12 months ago
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RE: HP Cycling, Expected or Undesirable

Just thought I would post back in this thread for any future viewers as what what Ive discovered. It appears that the Samsung controller does not ha...

12 months ago
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RE: Installing your own ASHP - DIY

@mike-h I had a search yesterday and that fits with what I was able to find, so no tweaking of hysteresis for me. I think that I might be able to p...

12 months ago
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RE: Installing your own ASHP - DIY

@johnmo I though I had LOL, then its the hysteresis I need to look at, Im not sure how to change that on my Samsung so a bit of digging is needed.

12 months ago
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RE: Installing your own ASHP - DIY

@johnmo Hi can you explain this statement about the 40L I can appreciate that having a larger body of water to heat will slow the onset of cycling, ...

12 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@lucia Sorry, Ive lost track of this thread as I have a lot on today. Obviously the output of the heat pump must meet or exceed you estimated heat los...

12 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@lucia If you have larger emitters (radiators) then a lower flow temperature can be used to provide the same heat loss. As well as the COP varying wit...

12 months ago
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