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JamesPa
JamesPa
@jamespa
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Joined: Apr 3, 2023
Last seen: Nov 1, 2026
Profile Activity
Topics: 28 / Replies: 5544
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Reply
RE: Best temperature wave form for best economy and efficiency .

Sorry my mistake, I didn't read the original post!  

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

My feeling is that Octopus will be wanting to sort this so I wouldn't despair, instead I would be patient but firm and, as @mars says, I wouldn't pay....

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

FWIW the ramp with my Vaillant up occurs shortly after the cloud of vapour appears, so its during the 'recovery' phase. I have always assumed that th...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Best temperature wave form for best economy and efficiency .

Agreed Agreed, an essential part of setting up a WC curve correctly I don't agree with this unless you want your rooms to be at 16. Assumin...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Volumiser required on Grant R290 air source heat pump?

There is a thread from a year ago where this was debated at length and the conclusion, well argued imho, was flow is better but it's likely only to ma...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need help maximising COP of 3.5kW Valiant Aerotherm heat pump

Yes it does, but you can disable it. Sensocomfort-Settings-Installer Level-Installation Configuration-Circuit 1-Room temp mod. Set to inactive to ru...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hoped for improvements not being realised on my Mitsubishi heat pump

Check them. Filters, particularly the fine mesh filter if you have one (it may be inside the case) block up quickly. Mine blocked up to the point th...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Hoped for improvements not being realised on my Mitsubishi heat pump

Thanks for the info. Volumiser configuration should be OK, a little concerned the rads are original it suggests some may be undersized. OK, difficu...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: If a heat pump can only heat DHW to 50C then what?

As you now have a Heliotherm engineer on the case I wont comment further. As @mars says this is high end stuff, the suppliers need to be made to work...

9 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Need help maximising COP of 3.5kW Valiant Aerotherm heat pump

OK. Well in case you haven't already the first thing to do is to disable all room influence and turn the WC curve down as far as you can until the ho...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Same Heat Pump Size, Different Sized Homes: Would One Be More Efficient?

The larger house might turn out slightly more efficient due to increased system volume, but I'm basically on the same page as @majordennisbloodnok.

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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