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Joined: Jan 20, 2022
Last seen: Aug 28, 2025
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Topics: 16 / Replies: 2435
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RE: Decisions to make on 12000 kWh per year for heating and DHW

I agree so much with @derek-m I'm constantly coming up against the laws of physics as a constraint in designing energy solutions. Social media is cur...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Decisions to make on 12000 kWh per year for heating and DHW

Yes, I understand the temptation. However I was at Energy Show yesterday talking with an engineer who is committed to finding energy-efficient solut...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

Yes, I get it 🙂 So if the ufh was taking water at a much lower temperature, then the solar-thermal would be better able to contribute to that. (I h...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Decisions to make on 12000 kWh per year for heating and DHW

Not necessarily. There's another very 'live' topic here called Anyone want to share costs on batteries? Don't worry too much about the original titl...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

Thanks @heacol Your observations are well made. Fortuitously the annotations you've added are already implemented (with one variation). It was my d...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Decisions to make on 12000 kWh per year for heating and DHW

Hi @chrislay - you're very welcome here. First a question: When first investigating the installation of an ASHP, did you get an Energy Assessor to s...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Decisions to make on 12000 kWh per year for heating and DHW

The 20m limit for wood pellets being blown is due to an ENplus 1a guidance document. This indicates that pellets may become fragmented/damaged if blow...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

Like this: The UFH manifolds were bought 18 years ago. Those actuators define the characteristics of water-flow in the ufh loops. Technology has...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Decisions to make on 12000 kWh per year for heating and DHW

Two points to mull over @chris 1: I could do with knowing whereabouts you are geographically. As GB tackles the growing energy crisis, we should be ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Underfloor heating designer / engineer needed

It's an UFH system being operated from a thermal store. The water temperature leaving the store is 46degC. It then passed to the manifold for that lev...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ASHP options for my mum living in Cambridgeshire

Over here I've given some background information about HP cycling and the adverse effect it has on the mains grid. Since permission is required from...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Underfloor heating designer / engineer needed

Hi @bridgetjohn and I too am intrigued. As I'm gradually refurbishing a Devon farmhouse built in 1937, I've taken the opportunity to install UFH pip...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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