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Lakey
@lakey
Member
Eminent Member
Joined: Feb 16, 2025
Last seen: Jun 13, 2025
Topics: 4 / Replies: 18
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RE: Heat loss calculators and spread sheets

@sicky 72m2 for the whole downstairs, it was very much a rough guestimate on price when I asked about other options instead of rads.

1 year ago
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RE: Heat loss calculators and spread sheets

@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...

1 year ago
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RE: Heat loss calculators and spread sheets

@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...

1 year ago
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RE: Heat loss calculators and spread sheets

@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 ...

1 year ago
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RE: Heat loss calculators and spread sheets

@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, ...

1 year ago
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RE: Heat loss calculators and spread sheets

@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...

1 year ago
Reply
RE: Heat loss calculators and spread sheets

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...

1 year ago
Reply
RE: Heat loss calculators and spread sheets

@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...

1 year ago
Reply
RE: Heat loss calculators and spread sheets

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...

1 year ago
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