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Last seen: Sep 5, 2026
Same here lol The fact the house had been heated for 40 years by a 12kW ground source heat pump could provide a bit of a hint about the actual heat ...
UFH manifolds are horribly expensive usually, except Chinese models. However manifolds for domestic water (or for heating but not UFH) are quite cheap...
Without information about where and how it was measured, this is useless. Don't even know if DC or AC. EBUS has 20VDC between the two wires when idl...
Single phase heat pump inverter drive consists of boost power factor correction, HV DC bus caps, then three phase full bridge inverter driving the mot...
If you have two isolating valves (one on each end of each loop) which you should in order to isolate a loop in case the pipe or the pipe fitting leaks...
As water flow temperature increases, heat pump COP decreases, therefore you pay more in electricity for the same amount of heat energy if you want it ...
Yes you can do that, you can also send the water first through the FCUs then through the slabs. In both cases the return temperature to the heat pum...
In my previous apartment I put a 10 liter water heater right below the kitchen sink. Instant hot water to the tap, but only 2kW power consumption, muc...
A2A is better at cooling, and has no risk of condensation because the heat is transported as latent not sensible. Condensation only occurs on the heat...
Currently, I send water above the dew point (17°C) into the slabs. The effect is... subtle. In fact I can't really tell whether it's doing anything. Y...
Not my style 🤣 🤣 The installation you're planning looks like the one I'm building (FCUs + UFH) except I'm adding a wood furnace whi...
Hi I'll skip the feedback sandwich 😉 UFH corrugated stainless steel pipe - looks horribly expensive but if money is not an issue then no problem....
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Degrees of Separation
Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
@cathoderay I started to record oil usage per month on ...
By ian33a , 1 hour ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 5 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 10 hours ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 1 day ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
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It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 1 day ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
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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 , 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 , 6 days ago
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