Lennox is built on a legacy of innovative firsts, from the introduction of the riveted-steel furnace in 1895 to some of the most efficient air conditioners available today. Over the years, Lennox has set the standard for home comfort, and we continue to push the standard forward with a lineup of more than 60 leading-edge products and a network of more than 6,000 full-service dealers, including Scottsdale Air Heating and Cooling.