Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Feb 2, 2012
( http://www.lennox.com/products/furnac... ) A variable speed furnace motor uses two-thirds less electricity than a standard single-speed motor. With the energy savings you enjoy each month, your investment in a variable speed furnace like the Lennox® SL280V gas furnace will pay off.