This included refrigeration equipment such as refrigerators, air conditioners, and freezers. Refrigeration has many applications, including household refrigerators, industrial freezers, cryogenics, and air conditioning. Domestic refrigerators and freezers for food storage are made in a range of sizes. Frigidaire also produces a wide variety of refrigerators and freezers for the consumer market. Many modern refrigerator/freezers have the freezer on top and the refrigerator on the bottom. Food rotted inside the hundreds of unpowered refrigerators and freezers spread throughout the building. Refrigerators, freezers, and air-conditioning represent dangers of such exposure. The city is home to "Centauro", a company which produces industrial coolers, refrigerators and freezers. None of the restaurants have freezers, microwave ovens, or can openers. Among the offerings were milk coolers and walk-in freezers for produce and meat. Other uses include sourcing of back-up power for essential loads like refrigerator/freezers and electronics/computers. Preserving food in domestic kitchens during modern times is achieved using household freezers. There are 2 main IQF technologies&colon; mechanical IQF freezers and cryogenic IQF freezers. Many modern upright freezers come with an ice dispenser built into their door. Low temperature systems such as freezers move less fluid in same volumes.