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...
Latest Posts
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Thank you for the calculation I'll add some first ...
By Old_Scientist , 57 minutes ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
Thank you, that is very kind of you to say so! Yes...
By cathodeRay , 3 hours ago
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RE: Help me keep the faith with my air source heat pump installation
@adamk not all 7kW Vaillants have a noise issue. Ours i...
By Judith , 4 hours ago
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@old_scientist Super. Thanks for all that info. My day ...
By bontwoody , 9 hours ago
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Very funny @transparent. /p>
By JamesPa , 10 hours ago
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RE: Renewables & Heat Pumps in the News
Thanks Lucia. I'll set aside some time to go through th...
By Transparent , 1 day ago
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RE: How to Understand Wiring Up a Heat Pump
@renewables345 you say you are 18 and I’m assuming you ...
By Judith , 1 day ago
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RE: Do I just go with the lowest quote for my heat pump?
Seems to be settling better now I'll leave it alone
By Jancold , 1 day ago
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RE: Bosch CS5800i 5kW - Experience So Far
We do like the exhaust air heat pump as a centralised M...
By Steelbadger , 2 days ago
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RE: Solar Thermal DHW and ASHP
@kenbone how is your battery holding up Ken? Still goin...
By Mars , 2 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Old Samsung R410a unit 9kw, modbused controlled, let Ha...
By KenBone , 2 days ago
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RE: Replacement Inverter for old FIT system
@bontwoody I have a single string 3kW solar AC inverter...
By Old_Scientist , 2 days ago
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Octopus removed our gas meter for free a couple of year...
By robl , 2 days ago
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RE: Why Air Release Valves and Deaerators are Non-Negotiable
I think that's a key point. An air-release valve shou...
By Transparent , 2 days ago
