Why use a sweater to keep warm when you can go with high-tech TEC? Temperature Equipment Corporation (TEC) distributes heating, ventilation, and air conditioning products to commercial, industrial, and residential customers. The company operates about 15 warehouses and HVAC parts stores in the Chicago area and northern Indiana. It carries products from brands such as Bradford White, Carrier (including Bryant, Payne, and Racan), Honeywell, and Sanyo. Its TEC Properties business leases office and warehouse space in the Chicago area. Founded in 1935, TEC is owned by Lexington Corporate Enterprises.