Kegerator

A kegerator is a refrigerator that has been designed or altered to store and dispense kegs. By keeping the keg in a refrigerated environment and using CO₂ to pressurize and dispense the keg, it will allow the contents to remain fresh and carbonated for an extended period of time, generally a couple of months. Specifically designed kegerators are available for both commercial and residential use, however a common refrigerator can be reconfigured into a kegerator with a kegerator conversion kit. Not all standard refrigerators have enough room for a keg, so kegerators are designed in a manner that will allow one or more kegs to fit inside along with the dispense system. Kegerators are typically used to dispense draft beer, but are also gaining popularity for dispensing wine, cold brew coffee and kombucha with certain modifications.

A crucial part of any draft beer system is the keg coupler, the part inside the kegerator that actually taps the keg. Different types of kegs require different keg couplers, so you need to consider what you plan on serving and purchase the coupler that is right for you.

The D, S, U and G couplers are secured to the keg by twisting them in place (like a screw). The A System coupler is often called a "German Slider" because, unlike the other couplers, it slides in place and can be secured at any angle. The M-coupler also slides onto the keg, but it taps different brands than the German Slider. Home brew couplers are different in that they have a separate component for the gas in and the liquid out.

A kegerator has cost benefits that make it a viable choice over the purchase of smaller cases, such as the typical 6-pack or 12-pack. Generally speaking, kegerators save costs because of their connection with business theories on bulk sales, as well as their savings on packaging smaller cases of beer. Since a keg typically stores large amounts of cold beer, many kegerators have been known to save up to 60% on costs when compared to the same amount of volume in cans and bottles. Depending on the brand of beer, cost savings can be even greater. Therefore, more specialized craft beers can often provide significantly higher savings than common brands like Budweiser.

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Wikipedia