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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 13, 2025
Profile Activity
Topics: 17 / Replies: 2842
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Reply
RE: Hot Spring Ground Source Heating

Modern DHW cylinders designed for heat pumps have quite sophisticated finned coils to maximise the surface area and thus heat transfer. Ideally you p...

10 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: How to make me regret installing a heat pump

Yup, its a chicken and egg situation. Until people accept that it must be done they will find ways to avoid doing it if its inconvenient to them. Bu...

10 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Hot Spring Ground Source Heating

On another forum and in a different context someone (@johnmo who is also on this forum) has just posted this link Its designed for DHW (which presu...

10 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Glycol top up advice

Before you put glycol in the radiators, do you have a heat exchanger to separate the external plumbing from the internal. Thats quite common (but not...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to make me regret installing a heat pump

@lucia Just a (possibly evil) thought. There are politicians and political movements throughout history that have been highly successful on the back ...

10 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Hot Spring Ground Source Heating

@allenc According to Wiki geothermal power heats 89% of the houses in Iceland, and over 54% of the primary energy used in Iceland comes from geother...

10 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Hot Spring Ground Source Heating

So if the water from the spring were cooled to say 30"C running through a heat exchanger, 4l per minute is 20×4.2/60 x 4 kW, about 5kW. That's a usef...

10 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Shutting down heating when out for the day - data

Thanks for doing so. We do need more data on this and many other things because there are lots of variables only some of which theory can currently t...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to make me regret installing a heat pump

Which is one reason I started with the need to accept it must be done otherwise it's almost pointless having the discussion. For those that do then t...

10 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: How to make me regret installing a heat pump

I bet the same residents complained last time a petrol station nearby closed.

10 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: How to make me regret installing a heat pump

In contrast, locally to where I live, 3000 houses have been thrown up in the past 5 years, selling at 350k - 600k +, with not a single heat pump and b...

10 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Shutting down heating when out for the day - data

I presume that you heat your hot water at times you are not taking a shower. Just like your hot water tank your house stores energy. Not quite. ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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