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Last seen: Sep 18, 2026
From the Full SAP Report: Space heating requirements: 8314 Kwh/year I can see the U values for all of the structure, but don’t understand the fina...
I done some checking with chatgpt and yes its 7 KW output with an input of approx 2KW, thank you for correcting this. So at 20W/m2 and 200sq/m that'...
Is that 7KW input or output. If 7KW input that's way oversized. I have attached an image of the name plate on the heat pump, for confirmation. I ha...
Thank you for the clarification on how the de-ice cycle works. Regarding the question on flow rates across the heat exchanger. I have this split sy...
I have been making some adjustments to the heating and would like to clarify a point. If you are having short cycling issues, is it best to slow the...
@jamespa Thank you for the reply. That clarifies things. I hadn't read the starters guide, but will do now. It's a 2 port buffer. When zero or b...
Thank you, that helped in my understanding. I believe this Hitachi split system takes water from the buffer tank/underfloor to defrost the evaporator...
The trouble is that I do not know enough about how heatpumps work at the moment, to offer any reply to this.
Thats a lot of data!
Thank you for the info. If I am reading it right, it only quotes the output power. From the data can you work out the min input power?
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Degrees of Separation
Latest Posts
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@editor Aargh - Trustpilot. On my journey, Ì contacte...
By L8Again , 2 hours ago
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RE: Cooling with air to water heat pumps
@editor does that mean you have to have two separate ex...
By mrkfm , 12 hours ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
Posted by: @ian-s Could always use the money saved o...
By Rob of York , 17 hours ago
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RE: Why are ASHP installs so expensive?
And then you look at US electricity prices and weep.
By bornagain , 19 hours ago
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Depends on what controls the pump! Thats the whole poi...
By JamesPa , 23 hours ago
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The positive reviews keep coming in for Britain's Heat ...
By Mars , 2 days ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
I have one of these fitted which also allows you to reg...
By Old_Scientist , 2 days ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
If they can't don't give up. Heat pumps are, in reali...
By JamesPa , 3 days ago
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RE: Missing flow temperature in Heat Geek proposal
Yes that's what would happen by turning down the lsv to...
By JamesPa , 3 days ago
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RE: Grant R290 DHW Cycle Interuption
It looks like some sort of short pre-run. The question...
By JamesPa , 3 days ago
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RE: Cascade System or larger single unit
@renewables345 I would say if it a new build it’s no mo...
By Aventus Eco , 3 days ago
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RE: Say hello and introduce yourself
@gz00, welcome to the forums. There’s a huge amount of ...
By Mars , 4 days ago
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RE: Home energy storage & battery register
1 fox ess lv5200 batteries, plus 2 more waiting to be i...
By Jimcub , 4 days ago
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RE: Heat Pump deployment statistics: June 2026
@l8again Unfortunately the government is, I suspect,...
By JamesPa , 4 days ago
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