When you choose Lennox, you're getting the best. As a leading innovator of home and commercial heating, cooling, refrigeration, air-quality, and related services, Lennox International is committed to helping our people innovate our products and their careers. Controls Engineering at Lennox leads innovative product development, with its array of new products in the recent years and has been an integral part of the product development and research team. System verification has been the core of controls engineering in maintaining the quality of release of all the New and Maintenance firmware release cycles.