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Last seen: Sep 5, 2026
The "thermal comfort" we feel is a mix of air temperature and infrared radiation received by the body. This radiation comes from every surface in the ...
Not a good idea to use just a towel rail during summer for two reasons: 1) Pipes will still radiate heat, either wasting power or making the house t...
I installed the air source heat pump in January 2026, it replaced a dead ground source heat pump. I did not use it in the way the forum recommends: ...
My LG does the same: when turning it on, it's below the flow temperature setpoint, because the water cooled down. So it goes "Oh no we're too cold, le...
Assume flow from the heat source is higher than flow to the load. 1- Left is what happens "in theory on paper". 2- Middle is what actually happens...
You don't have to run the heat pump with a deltaT of 5°C, you can just run it at deltaT 10 or more, with lower flow rate. 5°C is a bit more efficient,...
Hole diameter is small but hole length is also very small. So there is flow restriction, but only over a short length, resulting in much less pressure...
That's well done. Cable is the correct type (LIYCY = 2x stranded copper wires + copper braid shield). The zip tie holds the cable itself, there is no ...
+1 CAT5 and 6 work absolutely fine for RS485 until the wires break, which will happen eventually if vibration is present or someone opens the panel ...
Heat of vaporization of water is 2.25 MJ/kg (0.625 kWh/kg), this is the amount of heat that must be removed to condense 1kg (or 1l) of water. Dehumidi...
It's a seasonal fruit, like tomatoes lol I bought 2x mobile 4kW units used last February for 200€ each. Dehumidifier is likely to be underpower...
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Degrees of Separation
Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
@ian33a — I'm not so sure about the numbers in the last...
By cathodeRay , 10 minutes 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 , 3 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 , 8 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 , 23 hours 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 , 23 hours ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 24 hours 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...
By Toodles , 3 days 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 , 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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