Profile: Lennox Industries, Inc. manufactures and installs residential and commercial air conditioning and heating systems. We also provide filtration systems, humidifiers and other systems for keeping the indoor air quality healthy and clean. Our heat pumps are ideal for warmer climates is an all-in-one cooling and heating system. During summer months, it works like an air conditioner. It extracts heat from inside the home and transfers it to the outdoor air. When the weather's cooler, it does the exact opposite, taking heat from outside and moving it inside. For optimal comfort and efficiency, a Lennox® heat pump can be combined with a gas furnace in one dual-fuel system.