Calculate Size Of Furnace Needed

If the furnace you selected is more than 10 below your heating requirement we suggest you go up to the next size.

Calculate size of furnace needed. For example if a furnace is rated at 100 000 btus and is 80 efficient then the heat output will be 80 000 btus 100 000 x 8. To help future furnace owners out we have developed a simple furnace sizing calculator. For example if your heat load is 150k btus and maximum residential central ac size is 60k btus 5 ton then you need two 60k btu compressors and a 30k 2 5 ton system. After the furnace sizing calculation you ll find how the size of the furnace is calculated.

The calculator s algorithm will select the full size system s and the smallest needed system to cover the rest of required btu load to give you most cost efficient estimate. A more efficient furnace will output more btus of heat than a less efficient furnace with the same btu rating. Better size bigger savings. May 9 2017 calculating the size of furnace and ac i need to install anonymous.

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. As professional furnace installers with over 100 years in business we ve helped thousands of homeowners like yourself find the right size furnace. We also made 3 examples for. You only need to know two things.

Different furnaces of the same input btu have different efficiencies measured in percentages. The size of the home is the first obvious factor in determining the furnace size but there are many other considerations also. Furnaces are rated on their btus of energy consumption not their btus of energy output. Furnaces are rated by the amount of fuel energy consumed when running called input btu.

For example a furnace with an input btu can have an efficiency of 80. What size furnace do i need for a 1000. Most furnaces are offered in 15 000 20 000 btu increments so you just need to get close in terms of sizing. Your home square footage and the climate zone you re in.

Examples of how to calculate needed btu s are very helpful ron lange. That means the furnace will produce 80 000 btu of heat. Dec 30 2016 easy to understand straight to the point myra nash. Furnaces are efficient affordable and reliable but only if they work properly.