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Last seen: Jan 28, 2026
Plumber clarified his changes (he never mentioned he’d upped 2102 to 53.5C) ASHP pump speed changed to 1 At manifold - each loop set to 1 litre a ...
I’d forgot to change the leave temp to 21c downstairs. Heatmiser showed 19.8c first thing. That’s after 2 hours of 21.5c temp call for. House was ve...
Yeah, I'm hoping between the lagging and some balancing done today that won't keep happening. Removing 2 of the hot water cycles helped as well. Wi...
I had it at 22c on and 21c 'off'. So technically it just never reached 21C at all - the zone always calls for heat. I'd not seen 21c in the room its...
Thanks Mike, I'll give 3-4pm a go tomorrow to compare against today on our usage.
Yeah, I had actually changed 2102 from 50 to 45C for a few days and didn't notice any difference in the downstairs temp before (maybe .1-.2C temp when...
…and would also appear changed the ASHP settings, one I know: 2102 - is now 52.5C up from 50C So the WC would imply run at 48C at 7C outside. Qu...
And totally forgot to add, the 4th temp probe that sits in one of the living rooms is showing 21.2C atm. I can't recall seeing that at this time of d...
Plumbers returned. External lagging upgraded (removed valve handles to be screwed back on when needed so no gaps in lagging also). And plant room f...
Very much so. I’ve complained to architect who acts as design manager for project and certifies each months fees. Definately at point of wanting some ...
…so that turned out a valve was closed in plant room which was the rear bedrooms. The amount of errors is really getting to me. off the back of that...
Thanks @iancalderbank , you've guessed right, they've not since come and done a full balance.The room I work from was rather cold this morning, then r...
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Latest Posts
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RE: How Accurate Is My DIY Heat Loss Calculation?
Thank you all, i have made several adjustments based up...
By kilgorexv , 2 minutes ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 1 hour 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 , 11 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 , 20 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 , 21 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 , 22 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 , 1 day 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


