1 watt is approximately 3 412 btu per hour.
45000 btu gas furnace heat square feet.
Btu charts furnace output and air conditioner size for a bungalow bungalow area sq ft furnace output btu hr air conditioner size ton built after year 1980 built before year 1980 built after year 1980 built before year 1980 up to readmore.
With a less efficient furnace operating at 80 percent efficiency this would require a.
We often refer to the british thermal unit as a btu but the rating is actually the btus per hour or btu h.
Furnace size for a 3 000 square foot home range from 105 000 btu to 180 000 btu depending on the climate zone you re in.
A mid sized home of 2 000 square feet would need approximately 50 000 to 60 000 btu to heat it properly.
76 000 btu required to heat your home.
1 btu 1 055 joules 252 calories 0 293 watt hour or the energy released by burning one match.
1 btu is the energy needed to heat 1 pound of water by 1 fahrenheit.
It is approximately the energy needed to heat one pound of water by 1 degree fahrenheit.
Temperature difference factor calculate the the temperature difference factor c outdoor temperature.
So for instance if you have a garage that is 20 feet long and 15 feet wide your square footage is 20 x 15 or 300 sq ft.
How to find how many btus your furnace should be.
For example if a furnace has a listed input rating of 90 000 btu s and an efficiency rating of 80 it will produce 90 000 btu input x 80 efficiency.
Then to calculate the output on a given gas furnace multiply it s efficiency rating by it s listed input rating to determine the actual btu output of heat.
One therm is equal to 100 000 btu or 0 10 mmbtu while 100 cubic feet of natural gas equals 103 700 btu or 1 037 therms.
Here is a table with calculated 3 000 sq ft furnace sizes for all 5 regions.
1 btu is the equivalent of 1 055 joules or 293 watts.
Number of square feet calculate the number of square feet to heat.
A british thermal unit or btu is a unit of measurement of energy.
In warmer climates multiply this number by 10 15.
Therefore the price per 100 cubic feet divided by 1 037 is equal to the price per therm.
And in cold climates multiply the square foot number by 30 40.
In more moderate climates multiply by 20 30.
Instead natural gas may be priced as dollars per therm.
Just as a rule of thumb the standard area required for safely parking one car is 10 by 20 feet or 200 square feet and a 2 car garage is at least double that area.