Last seen: Sep 10, 2025
All heat pumps cycle, in fact the 'non-cycling' temperature window is quite small even if the heat pump is perfectly matched to the house. Because th...
Well this is an interesting line of thought and I wonder where MCS would sit (on the fence? as far away as possible?) If manufacturer insists on a b...
OK thats definitely a different problem. The buffer will presumably cool down fairly quickly in relation to 12 hrs and at that point I imagine that ...
The plot you posted was more like 80% duty cycle, unless you also increase flow temperature (compromising efficiency) then you cant, at the outdoor te...
Nice one!
Just thinking about this measuring the temperatures on all 4 ports should, I think, provide enough information to achieve a reasonable balance. Some...
The defrost energy has to come from somewhere, ultimately from the heat pump! Just to be clear I have neither a buffer nor a volumiser in my system ...
If they did in the past but dont now then there are at least three contractual questions that arise 1. If they insisted on a buffer as a condition o...
I would support that sentiment. One conventional way as I mentioned earlier is sensors at one third and two thirds up the vessel. However buffer...
Do they? That's not what I observe from the several manuals I have read (albeit in some cases fairly quickly, I admit) over the past 2 years. I wond...
It does sound like the house has a large thermal lag. Bear in mind that the thermal lag of the house can be long even if the radiators can cool quick...
Latest Posts
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
I am pleased to say at 4pm today we have added another ...
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
@jamespa Thanks. Yes, its a bit sad so many of these jo...
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RE: Midea ASHP – how to set weather compensation
I managed to find a perfectly good new but 'last years ...
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RE: Buffers, hot water and cooling
@jamespa Your reasonably close! Especially with warmer ...
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RE: Who’s Caved and Switched the Heating On Already?
My heating isn't 'ON' yet, although it is firing up in ...
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RE: COP is not the only measure of efficiency
If that's the case then you are right to be sceptical, ...
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RE: Renewables & Heat Pumps in the News
To unpack this a little.... 1) how many of us in this...
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RE: Vaillant aroTherm Plus 10kW thoughts?
@realevil the fans and fan speed / coil size (height, w...
By ASHP-BOBBA , 20 hours ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
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RE: Anyone still weathering it out with Agile?
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RE: 300 Liter Tank - Do I have to heat it all?
The size of DHW tank affects the anti-legionella cycle....
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
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RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
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RE: Solar Power Output – Let’s Compare Generation Figures
My system installed in July 2024 has produced 6.4mWh in...
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 2 days ago
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 2 days ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 2 days ago
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RE: Can you help with our research: solar panels, EV chargers, home batteries, heat pumps?
Just done your survey!
By Judith , 3 days ago
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RE: Failing heat pump system - seeking thoughts on a rebuild
@cleardene-ashp just thinking about your issues here. Y...
By Judith , 3 days ago
