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Last seen: May 8, 2026
I'm torn between the "Tesla future" which I want, and what I consider to be closer to reality - there's just not enough "Carbon budget" for everybody ...
We have a lot of insulation - 150mm EWI, and a very heavyweight house - brick & solid concrete floor, so it takes days and days to change the temp...
@Aceshigh The thermosypon effect will be from any hot water store, where a pipe exits and heads upwards, or horiz then upwards. It's most likely ju...
@editor To turn down the light brightness, you'd generally put a resistor in series. I wouldn't be worried about buying a unit like the one linked...
@Mars I've done this kind of thing - there's an easy way, and a hard way! The easy way is to buy a solar panel + battery + PIR light like the one ...
I think there's a PP subtlety - if an ashp is installed by an mcs installer, then it is PD (permitted Development). If it's diy, technically PP is ne...
@transparent Are your ELV applications generally fixed wiring? There is a fair amount of available 12V automotive plug in equipment, generally usi...
I'm guessing the pump is there to boost the flow of the water, in a low pressure DHW system? Try turning it off somehow, or turning it down, see if y...
@aceshigh I’ve heard a ‘london loop’ can prevent thermosiphoning - it’s a 30cm or so pipe down then looping back up. The down segment prevents thermo...
As others have said, I can't see a long term future for significant hydrogen pumped to homes for heating. It's so inefficient and complex to make, tr...
I would try hard to put it inside the thermal envelope of the house. They're not normally noisy, but there's always lots of pipes, valves, an immersi...
@hughf I generally buy kindle books these days, my close up eyesight isn't as good as it used to be, so I find it easier to read. I also appreciat...
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Latest Posts
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RE: Setback savings - fact or fiction?
Indeed, I can well imagine that a heat-pump based syste...
By PeterWurmsdobler , 2 hours ago
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Loud noises in the night - and one for the toolbox?
I was woken at 5am on Sunday to a very loud noise, akin...
By JamesPa , 3 hours ago
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RE: Advice on Vaillant Sensocomfort
The latest Vaillant announcement I saw said that they w...
By JamesPa , 4 hours ago
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RE: Debugging my legionella immersion heater
I notice this (66 is rather hot) with my legionella cyc...
By JamesPa , 16 hours ago
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RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
@transparent I thought you would spot that wind turbine...
By Batpred , 16 hours ago
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UK warm homes plan - how can it be delivered?
@editor Sobering thoughts on your article on the workfo...
By Batpred , 18 hours ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@swwils there is no logic to oversizing a heat pump. It...
By AgentGeorge , 1 day ago
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RE: Vaillant Sensocomfort Time
Thank youy for the pointer. I think I have managed to ...
By ispookie666 , 2 days ago
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RE: Forum updates, announcements & issues
I have been doing a lot of work on the site lately and ...
By Mars , 2 days ago
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@majordennisbloodnok good advice, thanks for that.
By David999 , 2 days ago
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RE: My Grant R290 9kW Heat Pump Installation
I am following this thread with great interest and than...
By TaffontheTaff , 2 days ago
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RE: Sizing an ASHP; Heat loss and kW
You can't measure heat loss with a website. But you ca...
By JamesPa , 3 days ago
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RE: Estimating true heat loss from twelve months of consumption data
@ian33a — I have a sort of residual interest in this pr...
By cathodeRay , 3 days ago
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Hi, Thank you. So its a Daikin Altherma 3M...
By Lbart68 , 3 days ago


