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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: May 15, 2026
Topics: 23 / Replies: 4838
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RE: Aerotherm 12+12kw cascade huge power utilisation

I agree with most of what @bobflux said except possibly this: Unless your design temp is sub -5 I struggle to believe you need 18kW if this newbu...

2 months ago
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RE: NIBE Heat Pump Warranty: What's an Adequate Engineer Attendance Time?

Totally agree. However the manufacturers know that few people will sue, and the UK electorate has predominantly voted for light touch regulation - o...

2 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

Does it disappear when the heat pump is off? What about when the fan and water pump on the heat pump are running, but not the compressor(which will h...

2 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

Balancing can be a long process (it can also be very quick especially if the settings are almost right) and its possible to mess things up if you turn...

2 months ago
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RE: Daikin Altherma 3 LT compressor longevity question

Up to a point yes. However every heat pump (and every boiler) can only turn down so far, ie it has a minimum output (which, in the case of a heat pum...

2 months ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!

By opening up the lockshield valve on the radiator in question, or closing down a bit lockshield valves on other radiators (the lockshield valve, ofte...

2 months ago
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RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

Is that a single pair only? If so it may be part if the problem. How long? What flow rate do you have ( your heat pump will tell you) and what dt f...

2 months ago
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RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

Should be interesting. Do watch to see if the UFH gets too hot, although if it does then thats a positive outcome!  

2 months ago
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RE: If a heat pump can only heat DHW to 50C then what? Issue with 18KW Heliotherm heat pump

Sorry to hear that but I'm not surprised TBH. Stratification is effective in a normal unvented tank where the hot water is drawn off at the top. In ...

2 months ago
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RE: Refrigerant R32, is it now banned in the EU from 1st Jan 2027 for monobloc ASHPs?

I wonder if heat pump manufacturers will tone these siting restrictions down. I suspect so. They aren't, so far as I have been able to establish, ac...

2 months ago
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RE: Advice needed after a successful "leftfield" experiment.....

Re (2) I misinterpreted your earlier post. The actual requirement is here "(ii)the system providing space heating or water heating, or both, of ...

2 months ago
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