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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 18, 2025
Profile Activity
Topics: 17 / Replies: 2870
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Reply
RE: Do I need a bigger volumizer?

With that llh in place it's quite possible that the water circulates primarily round the heat pump loop which would cause the very short cycling you a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Interesting development on defrosting

I am pretty sure I saw a report somewhere of a coating which resists icing up, I think by causing the condensing water to firm little balls which free...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Interesting development on defrosting

You must be less sensitive to damp than me. I absolutely hate it when its +4C - ~-1C because of how damp it feels. Once it goes below zero the water...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do I need a bigger volumizer?

Noted - but remember the old saying: correlation does not equal causality Having said that if cycling is causing such a large degradation (and its g...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do I need a bigger volumizer?

Thanks, interesting. If I have done the maths correctly that's about a 6% increase in energy consumption during cycling (1/3.5 vs 1/3.7), ie small b...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do I need a bigger volumizer?

Pleased to hear all of that, you seem to have decided what to do and why, so my best suggestion is to do it and see what happens. If the only materi...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung ASHP DHW on - 'Heat' setting off - should central heating radiators still be permanently on?

@horne OK that helps. So as I understand it with ch turned off on the Samsung controller, rads get hot when you heat the dhw from the Samsung, but...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do I need a bigger volumizer?

As I say above, whilst the cycling is likely to be degrading performance its unlikely that it accounts entirely, or even in the majority, for the poo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do I need a bigger volumizer?

@rgledhill Ok first questions What's the box in brown (llh or heat exchanger) When it cycles how long off how long on Where is the 17l vol...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do I need a bigger volumizer?

OK I think you have two problems, excess cycling, and poor cop at moderate oat (outside air temperature). The first may explain the second, but mo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do I need a bigger volumizer?

Sorry, im not a tradesman but have spent far to much time on heat pumps so have become blasé about the TLAs (three letter acronymns) oat = outside a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and OPEN VENTED DHW tanks?

Not sure you are any worse off than those like me who live close to London when it comes to flexible installers. Many including me report similar pro...

2 years ago
Forum
Domestic Hot Water & Cylinders
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