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Last seen: Jan 11, 2026
@razz stick with it. There's loads of advice on here. The weather compensation thing is the way forward re actual operation. I had a 37 year old oil...
@grantmethestrength I'm afraid all of that is above me pay grade, I don't even have the heat loss calculation for the property (late 70's detached dor...
@grantmethestrength thank you interesting numbers. Did you find a flow temp of 33° at -3°C was sufficient to stay warm? What was your electricity co...
Thank you pretty sure it's solar gain causing the increase I think I'll leave alone at mo
Hi had an ECO 4 installation in September last year. Old oil system taken out and heat pump installed complete with new radiators and pipework throug...
Good morning thank you for accepting me onto the forum. We have just had an ASHP installed (Sep) to replace a 37 year old oil boiler and solar panels...
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Degrees of Separation
Latest Posts
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
The Vitotronic 200 WO1C control unit manual can be down...
By jon , 11 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
Flow rate is set by pressure created by the circulator ...
By bobflux , 13 hours ago
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RE: Glass lined Cylinder for private water supply
I have one of those... a Thermal Store. In my case th...
By Transparent , 19 hours ago
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RE: 7kW EV Charger Options Advice
Yeah that's normal Copper is expensive, and the kettl...
By bobflux , 19 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 21 hours ago
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 2 days ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@kilgorexv definitely a larger inverter will help and m...
By AndrewJ , 4 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 4 days 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 , 4 days 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 , 4 days 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 , 5 days 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 , 5 days 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 , 7 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 , 1 week ago
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