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Last seen: Mar 3, 2026
Yup, I see no reason to artificially pressurize low temperature heating technology, but as far as I can see that's the method most Heat Pumps follow. ...
@jamespa nothing to do with the needed pressure. Current pipework is likely 60 years old, buried in concrete and as such in an unknown condition. C...
It seems to be saying that by separating the systems, then glycol usage can be reduced. I've heard about maintenance issues with anti-freeze valves,...
Thanks, so yeah yours is quite oversized, we are the opposite, we need to keep the huse warmer than the standard.
@judith where it does start to make a differnce is installation cost and noise. Thanks for your reply.
@carpenterstation sounds like what I'm afraid of, hopefully you can get it sorted. Thanks for your feedback.
@bontwoody thanks, do you have any tips for a real world data approach. It does feel a little risky basing my estimate on a single day, unfortunatel...
Useful information thanks, we have a cupboard where all that can go, seems pretty small.
@johnmo not clear the pipes are dodgy, but they could be, nobody can know until after they are pressurized. Right? The only routing is the current...
@bontwoody £300 on a £7k ASHP project isn't really a major issue. The designer will have to size it anyway, my real question is how much efficiency i...
@bontwoody thanks, I see they are supposed to be 90% efficient or more. So maybe if I use that as a rule of thumb, a 45C flow from the ASHP woul...
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@editor "The interesting bit is that many modern invert...
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