Gradually, warehouses were equipped with cooling chambers and refrigerated coolers. Sizes range from small single serving bottles to large carboys for water coolers. The city is home to "Centauro", a company which produces industrial coolers, refrigerators and freezers. Evaporative coolers, sometimes called "swamp coolers", do not have a compressor or condenser. Modern Iranians have widely adopted powered evaporative coolers (""). It manufactures products like domestic air coolers, industrial air coolers. There are also separate rents for lockers and coolers. The main disadvantage of Peltier coolers is low efficiency. They also distribute mobile can coolers, normally for usage in shops, and vending machines. Facilities for monitoring operation of the coolers and the content of the tanks were inadequate. Asetek has contracts with many companies to make water coolers. The inner leading edges contained the oil tanks, which doubled as radiant oil coolers. They manufacture three types of air coolers - Residential, Commercial and Industrial. Charge air coolers range in size depending on the engine. YETI is known for its expensive coolers.