Gas Furnace Efficiency Calculator

Lennox gas and oil furnaces are engineered to deliver perfect warmth efficiency and energy savings.

Gas furnace efficiency calculator.

For this comparison exercise we will assume a 65 afue furnace is getting replaced by a standard efficiency 80 or a high efficiency 95 furnace. As quiet as they are efficient lennox furnaces also startup and run perfectly quietly helping to preserve the peace and quiet of your home. With a high efficiency furnace operating at 95 percent the home only needs a. Furnace information estimated efficiency of present furnace.

This calculator will make an estimate of how long it will take to pay back your investment in a new natural gas furnace. 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. With a less efficient furnace operating at 80 percent efficiency this would require a 60 000 to 72 000 btu furnace. House are the following.

You would be pretty disappointed if you replaced your natural gas furnace with an electric furnace hoping to save money in heating costs. 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 72 000 btu actual output. Delivering precise comfort and temperature control lennox furnaces can keep your home to within 0 5 degrees of your ideal temperature.