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Auto-defrost, automatic defrost or self-defrosting is a technique which regularly defrosts the evaporator in a refrigerator or freezer. Appliances using this technique are often called frost free , frostless , or no-frost .
Many newer units employ automatic defrosting (often called "frost-free" or "no frost") and do not require manual defrosting in normal use. Although, in some cases, users of Frost Free fridge/freezers have noted ice blocking the vent that allows air into the refrigerator compartment.
Kelvinator introduced the first auto-defrost models. [17] [18] Kelvinator refrigerators included shelves on the inside of their doors and special compartments for frozen juice containers in the freezer. [17] It also pioneered the side-by-side refrigerator freezer, the Foodarama series, in the mid-1950s.
The freezer-over-refrigerator style had been the basic style since the 1940s, until modern, side-by-side refrigerators broke the trend. A vapor compression cycle is used in most household refrigerators, refrigerator–freezers and freezers. Newer refrigerators may include automatic defrosting, chilled water, and ice from a dispenser in the door.
Automatic icemakers for the home were first offered by the Servel company around 1953. [11] [12] They are usually found inside the freezer compartment of a refrigerator. They produce crescent-shaped ice cubes from a metal mold.
Auto-defrost, a technique for refrigerators; A climate that is free of frost; Certain bibcocks (sillcocks); The Frost Free Library in Marlborough, New Hampshire