TECA Corporation! We manufactured the first thermoelectric (Peltier) air conditioner over 30 years ago. Always a leader in the field of thermoelectric cooling (Peltier cooling), today TECA offers the most comprehensive collection of thermoelectric products such as Peltier air conditioners, Peltier coolers and Peltier chillers in the world. Our collection includes standard and custom-designed thermoelectric products and accessories. All of our Peltier coolers and other thermoelectric products are manufactured in the USA.