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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Nov 1, 2026
Topics: 28 / Replies: 5544
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RE: Renewables & Heat Pumps in the News

I think you forget that people in Government are human beings just like the people who run large companies or indeed you and me. They don't and cant ...

9 months ago
Reply
RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer

From several reports on this forum it seems that many UFH installers are just that, UFH installers not heating engineers. They see their own sub-syst...

9 months ago
Reply
RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer

Now the link works you are right. Installer is still wrong though IMHO (workings set out above) to install it as a 2 port buffer not a pure volumiser...

9 months ago
Reply
RE: Midea anti-freeze valve issues with DHW and heating turned off

I guess it depends on exactly what you did. If you cut power the the control unit then or the outdoor unit then quite possibly it wont switch on. If...

9 months ago
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RE: Battery with existing PV - regulations

There is something here about generation with export limitation which I think makes it clear that it should be possible subject to having the right eq...

9 months ago
Reply
RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer

The link didn't work for me. G3 is the building regulation related to safety of unvented cylinders. It requires certain safety measures be implement...

9 months ago
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RE: Renewables & Heat Pumps in the News

Not really a U turn, just a change of the closure date. I think the last sentence gives a clue to why, and anyway its easy to guess that contract/com...

9 months ago
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RE: New Solar, Batteries, Air Source and Under Floor Heating advice please

Sadly no. ASHPs (and boilers in fact) are most efficient if they are working and producing heat for long periods, preferably continuously. Unfortun...

9 months ago
Reply
RE: New Solar, Batteries, Air Source and Under Floor Heating advice please

All noted. Given the construction I would be wary of relying on 'batch heating' so a heat pump well matched to the loss is desirable. If you are int...

9 months ago
Reply
RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer

If you measure temps at A, B, C and D in my diagram above it should be possible to work out exactly what is going on. Best done on (a) a very cold da...

9 months ago
Reply
RE: New Solar, Batteries, Air Source and Under Floor Heating advice please

I'm really struggling to imagine that the house you describe with the insulation you describe is 10-11kW unless you the design temperature where you a...

9 months ago
Reply
RE: New Solar, Batteries, Air Source and Under Floor Heating advice please

Prior to installing an ashp I had I diverter. However I disconnected it once the ashp was installed. Cheaper by far to heat dhw at 8p per kWh and a ...

9 months ago
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