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Last seen: Jan 4, 2026
I agree with a lot of the logic and good information given by Derek. But I can’t agree that H2 is the general answer. Very inefficient production proc...
Dan i haven’t changed my Octopus DD yet. We were on £45/m for cooking, dishwasher, EVs, etc before. Plus the oil delivery once per year. I’m guessin...
Dan T, you raise a good point about affordability. I think there is an issue of taxes applied to electric compared to gas. Gas has lower taxes. Ideall...
Sam I am sorry the ASHP did not work out for you. I’m only 3 weeks into mine, so don’t have any of your experience. But as Phil says, gas boilers wi...
Thanks Derek, always reliable information from you. So a hydro box is different from a split system. I’ve a split Daikin system with the fan, heat exc...
Hi Kuba I think it’s all about getting several quotes and approaches. 8mm pipes are small to the radiators, but do they run all the way back to the ...
Wow Jet, that is a large kW usage. A few questions as you property is a similar size to mine. And I have a HT ASHP. What was the original MCS heat req...
Phil, by small bore pipes to the radiators, in my case I mean 10mm. We have large “mains” pipes running in the loft that are 35mm or 28mm with 10mm dr...
Evening Phil. Get several quotes. They will need to do a heat loss and heat demand calculation. Your dimensions and oil usage were similar to my bunga...
DanT - we have 4kW of solar PV - we generate about 3700kWh per year - as you say much more in the summer. My system is 9 years old (see detailed desc...
Welcome Phil. Top tip is to speak to several ASHP installers to get a variety of views. Unless it’s the size of Blenheim Place, a 2005 built home shou...
DanT you definitely need to get a diverter. You look like a “data man”, so perhaps the Solic is not for you, but I can certainly recommend it.
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Latest Posts
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RE: Glass lined Cylinder for private water supply
@Mars We did our own water analysis when we moved in fo...
By ian33a , 3 minutes ago
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RE: Switch suitable to change between two inverter CT's
@bobflux thanks, this is the CT I got recommended for m...
By Jancold , 6 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@batpred They offered both, I went with Pro. As an amat...
By baroquebank , 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 , 2 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 , 3 days ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
D'oh - of course. I shouldn't post before my brain is f...
By Old_Scientist , 3 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 , 3 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 , 3 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 , 3 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 , 4 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 4 days ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 5 days ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 5 days ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 6 days ago



