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Last seen: May 29, 2025
Well said, Sir! I have been trying to get this point across to reluctant ears. SCOP measures the efficiency of energy use during ACTIVE heat pump peri...
@johnmo Agree entirely.
@johnmo Agreed on size of buffer tank. They also say that the flow of secondary pump must be higher than primary, therefore they are proposing a kind...
@damon Whilst we are waxing lyrical about Viessmann as a pinnacle of heat pump system design, attached is an extract from their manual. They state tha...
Really. This is a rather sweeping generalisation. This may be valid in an old house with 2 sqm window and radiator, but different issues apply in a mo...
@harryrea I agree entirely with the concept of zoning for practical purposes, especially for control of comfort. For example, I have a log burner in ...
This could be mitigated by putting a one way check valve on the top input so that flow is only downwards. Can't think of any detrimental effects.
Apologies. Poor choice of words. Delete "dilution of temperature to emitters is minimised".
Only the difference in flow between the heat pump and the emitters passes through the tank. This lower flow helps to preserve the stratification of th...
Note a key point here though. The primary pump is connected in the return pipe while the secondary pump is connected in the flow pipe after the buffer...
@potatoman No, the installation is exactly the same as a 4 port buffer with primary and secondary pumps except that the output flow bypasses the top ...
@ashp-bobba I am afraid that you are talking to the wrong person about manufacturers preferences. However, as far as I can see, it functions the same...
Latest Posts
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Thanks for sharing, ours is looking fairly different. ...
By Batpred , 1 hour ago
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RE: GivEnergy inverter tripping due to over-voltage?
@transparent as you probably know GivEnergy entered adm...
By Tim441 , 1 hour ago
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RE: Cooling with air to water heat pumps
Very sensible Unfortunately I fear that's too simple...
By JamesPa , 4 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Good morning. I just came across your website. Was ho...
By iRadiate , 9 hours ago
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RE: Failed Heat Pump Install: IWA Claim Rejected
Many of the estimates we received mention IWA and RECC....
By Batpred , 20 hours ago
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RE: Rural burning – I've had enough
Same here in Finland. It's strictly forbidden ...
By upnorthandpersonal , 20 hours ago
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RE: Renewables & Heat Pumps in the News
Something worth flagging... we've just published a news...
By Mars , 21 hours ago
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RE: Renewable Heating Hub Homeowners' Q&A Podcast
The Homeowners' Q&A podcast is back... I've changed...
By Mars , 21 hours ago
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RE: Anyone concerned about GivEnergy?
I have already signed up with Axle so yes, that takes c...
By KevH , 23 hours ago
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@batpred Would it pass the airbnb feedback test no. I...
By EtchedPixels , 2 days ago
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A quick update... we've just launched the beta version ...
By Mars , 2 days ago
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RE: Who Actually Owns a Heat Pump in Britain? We Asked. Here Is What We Found.
The age part doesn't surprise me - only 25% of UK home ...
By EtchedPixels , 2 days ago
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RE: Home automation and the cloud; is there a better way?
Nothing you've said there, @etchedpixels, is something ...
By Majordennisbloodnok , 2 days ago
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I've heard from others living in the vicinity of Derril...
By Transparent , 2 days ago
