Q&A for How to Calculate BTU Per Square Foot

The math indicates 2.6; however, a 2.6 is not manufactured, so you're dealing with a 2.5 T unit. Take the rated BTUs, 32 K/12,000. 12,000 represents BTUs per ton.

30,000-36,000 BTU, depending on how many square feet the living room takes up, how much higher than a normal 8' ceiling the vault is, how much glass you have, and how well insulated the home is.

Anywhere from 17,500 - 18,500 BTUs. It depends on how well insulated the home is and how much glass you have.

Definitely not. Depending on how well the house is insulated, I'd say you need anywhere between 3.5 and 4 tons.

Yes, if you intend to heat the basement.

It depends on your prevailing climate. For an average US climate, a two-ton A/C unit would be sufficient.

Per the National Electrical Code (NEC), in general, the calculated load cannot exceed 80% of the circuit rating. Therefore, 80% of 15 AMP = 12 AMP max load. Assuming U.S. nominal voltage of 120V, the maximum heater rating is 120 Volts x 12 Amps max which means 1440 Volt-amps max assuming it is a standard resistance heater. If the circuit breaker (CB) is a 15 Amp 2-pole CB and the nominal voltage between the two poles is 240V; the maximum heater rating would be 80% x 15A x 240V = 2880 Volt-Amps max or 2880 Watts max for a standard resistance heater.

It will not normally, just as a basement does not affect the furnace requirements. However, if the ceilings are over 12 feet, you might want to double up the square footage for that space.

You will need several AC units. 22,500 square feet. is about the size of about 10 large houses.

No, it should be fine.

You multiply the square footage of your house by the climate factor (40 for cold, 60 for warm climate). Then you divide the product by the boiler efficiency.

Measure the length and the width of the room. Take into account the insulation and the height of the ceilings. There are charts online. Always take into account shaded and sunny areas.

Ductless heat pumps are generally more efficient than ducted heat pumps. because they do not incur duct losses. However, any heating or cooling system cannot perform efficiently when incorrectly installed. Other than that, compare the various energy rates in your region for the lowest cost energy source.

You will need 293.25 electrical watts to produce 1,000 BTUs.

You should add 60 BTUs per square foot for the space for both heating and cooling. Glass has very poor insulating quality.

No, but it consumes the same amount of natural gas. It all depends on the efficiency of the unit.

12,000 BTU's is = to 1 ton of Cooling. So, 116k BTU's would be just short of 10 tons.

BTU is a measure of how much heat energy a device generates; the amount of energy released will depend on how much oxygen is in the atmosphere and how much fuel is being consumed by the apparatus. Altitude can have an effect on energy consumption, but the calculations are based on other factors.

Most older homes have no requirement for air changes. Older home construction was not that tight. If an older home had been sealed to meet the construction standards of a new home, it is best to check with your local building department and inquire air change requirements for new construction, if any. The tendency is to over-seal homes, causing greater humidity and air quality problems than allowing them to leak.

It is impossible to answer, because every time you open the garage door you have to start cooling all over again.

Depending on the construction of your home and the climate, you will need a furnace between 30,000 and 60,000 BTU per hour.

Yes, but you'll be cutting it close.

5000 BTU's should both adequately heat and cool an average insulated 150 square feet space.

For safety purposes, the appliance should only be installed if meeting the manufacture's combustion air requirements. However, a 100,000 BTU appliance should be installed in no less than a 625 square foot room having at least 8-foot ceilings. There should be at least 50 cubic feet of air for each 1,000 BTU of combustion. This "rule of thumb" is not a replacement for manufacture's combustion air requirements and the appliance may not operate properly or safely unless it meets the manufacture's recommendations.

Approximately 21 tons cooling for the 8,300 sq. ft. building and 60 tons cooling for the 25,000 sq. ft. building.

On label on noted in BTUs or tons. If listed in tons, convert by multiplying by 12,000.

40 to 45 BTUs per square foot * 1200 sq. ft = 48,000 to 54,000. If the efficiency is 80%, to attain 48,000 to 54,000 BTU, the furnace should be around 75,000 BTU.

All things being equal, about 7,000 BTU. More information is needed for a more accurate answer.

Approximately 50 square meters can be cooled by one cooling ton.

Depending on the construction of your home and the climate, you will need between 29,000 BTU per hour and 58,000 BTU per hour.