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Toodles
Toodles
@toodles
Contributor
Illustrious Member
Joined: Oct 2, 2022
Last seen: Sep 14, 2025
Profile Activity
Topics: 85 / Replies: 1994
AllTopicsReplies
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@editor Indeed, manufacturers of most devices have their own methods of measurement that do not always relate well to ‘real world’ situations; they pr...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@prjohn Ooooh! Mars! Did you consider you might be opening a massive can of worms with this topic?! ;-)))

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@marzipan71 Thanks very much Marzipan, very interesting indeed. I think that that data excuses my uncertainty of LLH - Good or Bad? Regards, Toodles.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@hughf If a system doesn't have any variable restrictions like TRV’s, would such a system be better able to perform to the optimum without an LLH then...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

Thank you Mars, I accept that a LLH may affect the efficiency of the overall efficiency - but how can the average individual who has a system installe...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Forum updates, announcements & issues

@editor Thank you Mars, I use Larger Text as my default anyway but I am also trying to remember to use the Safari ‘AA’ feature once on a page and read...

2 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: Secondary pump speed - how much slower should it be?

@iancalderbank Thank you Ian, I have attempted to tweak the pump as close to ‘just slower than the average speed of the primary pump; and will content...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump size advice – is 16kW overkill for this property?

@bontwoody Sounds as though someone is speaking through their headwear to me! The normal arrangement is that DHW heating cycles are achieved by the th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

Just thought that a little cheerier results might be welcomed; this is today’s performance with an OAT of 10 degrees C. We have gone from approx 1.75 ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Forum updates, announcements & issues

And just one more thing please Mars, please could you re-instate the text size option in the reply pane as at the moment, there is only the (to me at ...

2 years ago
Forum
Introductions, Forum Rules & Updates
Topic
Secondary pump speed - how much slower should it be?
2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 43
Views: 7809
Reply
RE: Performance in the current cold snap…

@derek-m I suppose that accuracy of the measuring of ambient temoerature in the locale of the heat pump will partially depend upon the frequency of th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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