Fridge, ref…call it whatever you like.

The FIRST home refrigerator was made early in the 19th century in the United States. It consisted of an insulated cabinet into the top of which a block of ice was lowered.

The modern refrigerator which first appeared in 1918 was automatic. They use one of two methods technically known as absorption and compression – to keep foods at temperatures near freezing point, 0o Centigrade (32o Fahrenheit). The period during which foods can be preserved at this temperature is limited to a few days, but in freezers, at temperatures of -18oC (0oF) and lower, they can be stored indefinitely.

The home refrigerator of today is a double-walled box with a hinge door, the space between the walls being filled with insulating material. The door is also double-walled and insulated. A rubber gasket on the inside of the door frame maintains a seal to stop warm air leaking into the box when the door is closed.