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bontwoody
bontwoody
@bontwoody
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Joined: Mar 5, 2022
Last seen: Jun 20, 2025
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Topics: 28 / Replies: 804
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RE: New 5kW Samsung Gen6 heat pump owner with loads of questions

I think the low dT is a consequence of the low flow temp you are trying to use, 1.5-2 is small but although a dT of 5 is often cited as optimum, i don...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New 5kW Samsung Gen6 heat pump owner with loads of questions

@johnnyb Thanks :-). I’m off out on a Xmas do tonight but will sit down and try to answer as many of your questions as I can tomorrow.

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New 5kW Samsung Gen6 heat pump owner with loads of questions

@johnnyb This formula does seem a bit contenious, but the results do seem to me to be closer to what is expected (obviously not to everyone though see...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Samsung 12KW Heat Pump Help

@dunlorn @mike-h So the original post comes from the Heat Pumps UK facebook site, reference to it are shown below. The seem to think that the si...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New 5kW Samsung Gen6 heat pump owner with loads of questions

@johnnyb So I think what might be happening is at the very low flow temperature you are trying to use, you cannot get the UFH to release enough energy...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Samsung 12KW Heat Pump Help

@dunlorn @mike-h I’ll try and get the original post where this was stated as an excerpt was passed to me. unfortunately I don’t find that the Sa...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New 5kW Samsung Gen6 heat pump owner with loads of questions

Hi @johnnyb I have the same heat pump as you but use radiators not UFH. You should be able to run the UFH on a lower flow temperature than radiator...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: New Samsung 12KW Heat Pump Help

@dinhp Ive just come across some info that improves your SCOP. I was dividing your Generation kWh / Usage kWh to get COP, but it appears Samsung hav...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Has anyone replaced an old ASHP with a new one?

@pressure Well mine was a new installation in this house, but if upgrading I would definitely install anti frost valves if you are using antifreeze so...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Has anyone replaced an old ASHP with a new one?

Couldnt you just replace the old Heat Pump unit, leaving everything else as it is? My 5kW Samsung cost just over 2K last year and its simple to switch...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Non standard houses with non standard owners

I remember watching a heat geek video about the effects of unheated rooms and how it would impinge on efficiency as the flow temperature in other room...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Fitting emitters with output greater than room heat loss.

@jancold yes it’s fine to oversize them, you can just limit their output as required with the valves. It gives you some more flexibility as to room...

6 months ago
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