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Last seen: Jun 13, 2025
@sicky 72m2 for the whole downstairs, it was very much a rough guestimate on price when I asked about other options instead of rads.
@jamespa yes thanks, I've been quoted a min SCOP of 3.60, so as long as I could get cheaper electric than 22p I think it starts to pay it back. Anothe...
@jamespa I had one company design at 55 because I was struggling for radiator space... I've had others pull out because I couldn't heat the room prope...
@jamespa my room heat loss is approx 2.4-3 kW (house 7-8 kW) depending on who's done/what tool they've used. The room is a complicated extension with ...
@jamespa I think I need between 2.4 kW and 3kW over 2 600mm spaces for design conditions, so 21 internal and -3 OAT. I currently run at 18 in winter, ...
@cathoderay @jamespa thank.you for the suggestions on a fan coil, they're no cheaper than a large aluminium Eskimo radiator or 5 column cast iron ver...
Well, my current room is heated by 2 off 1800*440 designer rads. I estimate their output to be 1500 W each at dt50, my heat loss is calculated to be b...
@cathoderay thank you, I only have one thermostat for the house hence looking at the room data. I doubt my house is the same temperature throughout, i...
Could a method to calculate heat loss in a room be to set the thermostat on max and measure the max temperature the room can achieve at a measured OAT...
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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 , 2 hours 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...
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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