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Lucia
@lucia
Member
Honorable Member
1682 kWhs
Joined: Jun 22, 2024
Last seen: Mar 13, 2025
Topics: 11 / Replies: 251
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RE: Two possible heat pump routes - how to evaluate them?

@heacol thank you Brendon - that's helpful. BG want a buffer tank Octopus want a volumiser. To be fair, I didn't push back on the buffer with BG ...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@derek-m Thank you. If you get time please either have a look at the images I put in a post roughly a page back. Or see below: I got a link from Op...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@gunboatdiplomat I was being a muppet, sorry. 🤦🏻‍♀️ The Heat Geek guesstimate is double the Octopus quote for a...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@derek-m Thank you - that's great imagery - I have that kind of a visual brain so it appeals. I will play with it this weekend and have a go at tryi...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@derek-m I 2nd that and keep it slow and agonising for cavity wall insulation sharks. 🤬

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@bontwoody Theirs (from your link) is even lower than the MCS calcs. HG = 3kw BG = 3.5kw Oct =4.? These are all estimated ...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@gunboatdiplomat I haven't done a Heat Geek calc but have done a de Podesta calc on 1year's metered gas use (which HG reckon is ok). This gave me 5.61...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@bontwoody yes, I understand about larger rads and lower flow temperatures what I don't grasp (and that page doesn't explain because I don't see any m...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@dougmlancs Thank you - that's definitely worth a try. I know the loft insulation was done in 2006 and the firm went bankrupt (my GBIS assessor found ...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@johnmo You have to extract everything first and only then can you refill it. Even for a small bungalow like mine it's £3,000 at least. I can't afford...

8 months ago
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RE: Two possible heat pump routes - how to evaluate them?

@johnmo You have a 6kw Daikin? Good point about the bucket... My preference if going for the 6kw is to try and convince Octopus to accept it. I ...

8 months ago
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