Lennox National Account Services (NAS), wholly owned by Lennox International, a 120+ year old company and a world leader in the Heating, Ventilation and Air Conditioning (HVAC) industry. NAS is a major, national player in the Commercial Heating Ventilating and…

Lennox (NYSE: LII) is an industry leader in energy-efficient climate-control solutions founded over a century ago on the principles of integrity and innovation. Dedicated to sustainability and creating comfortable, healthier environments for our residential an…