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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 23, 2025
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Topics: 17 / Replies: 2890
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RE: Rethinking the mindset for mass retrofit - a provocative idea

Thanks. My first reaction is that's scary. It looks like the average predicted is (about) 3.5 and the average actual is 2.7. The latter doesn't mat...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

[/quote] With a design LWT of 65 and WC applied, the system will spend most of its time (in the South East of England) at an LWT in the low 50s ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

Another possible thing to think about for @iancalderbanks list is an independent heat loss survey function, together with some protection for the inst...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

Thats the provocative statement yes, but OK its the extreme to stimulate out of the box thinking. Currently most HP retrofits seem to involve changin...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

@derek-m According to MCS accounts they are funded mostly by 'trading activity'. More specifically: According to its website MCS became a chari...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

Thanks for this. I can only see manufacturer data here not 'real world situations'. Am I missing something? My analysis used manufacturer data (f...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

Quite so. I suspect it might have been deliberate on the part of MCS (a private monopoly) when they wrote the definition of 'the MCS Planning Standar...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

yes and I think many others would too (I have considered it and my LPA have, off the record, suggested I could probably get away with it). But ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

@chickenbig As you say the PD rules say that 'Development is not permitted by Class G unless the air source heat pump complies with the MCS Planning S...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

"for me the key bit that is not obvious to me is who are the umbrella organisation providing training and support to make sure these installs are don...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

As above I think this is a good list I would add Permitted development rules modified so that the noise condition set out in MCS-020 applies...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Rethinking the mindset for mass retrofit - a provocative idea

PS, I started this because I am interested in understanding potential, not for me (I've pretty much worked that out), but more generally. My current...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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