12,000
1800 btus
According to the Energy Star chart, 12,000 BTUs will cool a room of 450 up to 550 square feet. I'd stay on the low end of that.
80000
The rule of thumb is 2-1/2 tons per 1000 square feet. It is not measured in BTU which is a heating term
Around a million. plus or minus a few.
About 1/3 of an acre.
Standard practice holds that it takes 5000 BTUs to heat a room 100 to 150 sq ft Figure on adding another 1000 BTUs for every 50 or so sq ft added. Hence , 400 to 450 sq ft would need about 10,000 BTUs
30000 btus for every 400 square ft
30000 btus for every 400 square ft
BTU's are not based on the length. To answer this question the wattage and voltage of the baseboard must be given.
80,000 btus (british thermal units) should heat up 3,500 square feet