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Last seen: Jan 28, 2026
Thanks @heacol, I can only keep pursuing the builders/plumbers on this project, I see you're based in Cumbria, don't suppose you'd ever venture out to...
Thanks Derek, I'll mention this to plumbers if they come Thursday, I can only see one flow rate indicator in the plant room on the return (28l/s - hea...
Thanks Derek will give that a go today. I played with the TRVs a bit last night and temps seem to have changed, but going to confirm with more p...
Stem didn’t feel like I could push it down manually. Will try again
Somehow didn’t occur to me in all this. The utility room being UFR with its own heatmiser panel. Upping the temp on that panel invoked the UFR zone (v...
hi @derek-m , so completely confess very new to all this still. Removed the TRV head. In terms of the stem, how should that move? Up and down? for a...
Thanks Mike, the clunking seems often (sorry describing a sound that I have no reference too is hard to pick a term, metallic knocking/banging/clunkin...
I thought going forward I would indicate on a segment of the floor plan the downstairs zone, what it comprises of, where rads are, what rads they are ...
Thanks @heacol Next step is now the builder is getting the plumbers and architect and myself to meet on site to discuss all this. This is the orig...
Thanks @heacol Just asked the specialist on thoughts of removing the LLH as a first step to see affect. His response was that "they're recommended by...
Yeah, far as the heat specialist's recommendation goes it's get larger emitters to reduce flow temp and increase efficiency. The ASHP cycling is pre...
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Latest Posts
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RE: How Accurate Is My DIY Heat Loss Calculation?
@kilgorexv There is a simple rule of thumb by Michael...
By Rob of York , 28 minutes ago
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RE: Adventures in heat loss calculations
I agree that the close alignment of the theoretical and...
By Rob of York , 45 minutes ago
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RE: Surface mount or bury primaries for heat pump installation?
The installation is almost done! I've written up two ...
By tomasmcguinness , 8 hours ago
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 17 hours ago
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RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
By Jancold , 18 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Agree with Major. And even if I was very happy with ...
By Batpred , 19 hours ago
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RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
By Rob of York , 22 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 3 days ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 4 days ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 4 days ago
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 4 days ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 4 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 5 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 5 days ago



