Most furnaces are offered in 15 000 20 000 btu increments so you just need to get close in terms of sizing.
Size of gas furnace needed.
If the furnace you selected is more than 10 below your heating requirement we suggest you go up to the next size.
What size furnace do i need.
Better size bigger savings.
The most common types are gas furnaces which are required to have at least a 78 percent efficiency rating with the most expensive models approaching 97 percent.
Leave it to our expert furnace size estimators.
If your furnace is too small it will.
And if you re in need of a new furnace now is the time to act.
Note that the efficiency of your furnace will decrease with time and usage.
Some electric furnaces are 100 percent efficient.
Typical residential gas furnaces will be available in various sizes between 44 000 btu h and up to 120 000 btu h.
Furnaces are efficient affordable and reliable but only if they work properly.
A more efficient furnace will output more btus of heat than a less efficient furnace with the same btu rating.
An electric furnace works similarly except instead of a pilot light and gas powered burners heat is produced through a series of electric heating elements like those on an electric stove.
You need to purchase the right size furnace to heat your home effectively and manage your energy costs.
But the average homeowner can t simply go out and buy just any furnace.
If you get the sizing wrong you will have a hard time escaping winter s chill and or your energy bill.
Just as with air conditioners choosing the right size furnace is extremely important.
If the furnace you selected is more than 10 below your heating requirement we suggest you go up to the next size.
How to determine what size furnace you need about the author jack burton started writing professionally in 1980 with articles in word from jerusalem icej daily news and.
Your local carrier dealer is experienced at calculating furnace size and will do what s called a load calculation to determine the size most appropriate for your home.
A heating degree day calculation using the month of july as a factor is a more precise way of estimating furnace size.
To save energy money and avoid discomfort make an informed decision by using a furnace size calculator and discover the number of btus needed for your furnace to run satisfactorily.
Furnaces are rated on their btus of energy consumption not their btus of energy output.