Kegerator, a

portmanteau A portmanteau word, or portmanteau (, ) is a blend of wordsrefrigerator that has been designed or altered to store and dispense kegs. The kegerator keeps the keg in a refrigerated environment and uses CO₂ to pressurize and dispense beverages from the keg. This keeps the contents of the keg fresh and carbonated for an extended period of time, on average up to 60 days. Kegerators are specifically designed and 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 dispensing system. Kegerators are typically used to dispense draft

beer Beer is one of the oldest and the most widely consumed type of alcoholic drink in the world, and the third most popular drink overall after water and tea. It is produced by the brewing and fermentation of starches, mainly derived from ce ...

, but are also gaining popularity for dispensing

wine Wine is an alcoholic drink typically made from fermented grapes. Yeast consumes the sugar in the grapes and converts it to ethanol and carbon dioxide, releasing heat in the process. Different varieties of grapes and strains of yeasts are m ...

, cold brew coffee, and

kombucha Kombucha (also tea mushroom, tea fungus, or Manchurian mushroom when referring to the culture; Latin name ''Medusomyces gisevii'') is a fermented, lightly effervescent, sweetened black tea drink commonly consumed for its purported health b ...

with certain modifications.

Components

The kegerator contains the following components: * Stainless steel keg * CO₂ cylinder * CO₂ pressure regulator, with inlet and outlet pressure gauges * Keg Coupler (Also known as a Keg Tap) * Beer and air Line * Tower * Drip tray * Shank * Faucet * Faucet handle A crucial part of any draft beer system is the keg coupler, the part inside the kegerator that taps the keg. Different types of kegs require different keg couplers, so considering what you plan on serving is important in order to purchase the appropriate coupler. * System D (U.S. Sankey) — standard for North American beer * System S (European Sankey) — most common for European beer (Beck's, Heineken, Amstel, Stella Artois) * System U — used for stout and ale by a few breweries in UK/Ireland (Guinness, Harp) * System G — used by some breweries in UK/Ireland, and in the United States by Anchor Brewing * System A — chiefly used by breweries in Germany (Warsteiner, Paulaner, Hacker Pschorr) * System M — used by some German breweries (Schneider, Einbecker) * Pin and ball lock home brew keg taps — designed to work with

Cornelius keg A Cornelius keg (also known as a Corny keg or soda keg) is a stainless steel canister ( keg) originally used as containers by the soft drink industry. They can be used to store and dispense carbonated or nitrogenated liquids. Cornelius kegs wer ...

s. 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. Homebrew couplers are different in that they have a separate component for the gas in and the liquid out.

Economics

Kegerators are known to have cost benefits that make them 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 A bulk sale, sometimes called a bulk transfer, is when a business sells all or nearly all of its inventory to a single buyer and such a sale is not part of the ordinary course of business. This type of action is often used in an attempt to dodge ...

, as well as their savings on packaging smaller cases of beer. Since a

keg A keg is a small barrel. Wooden kegs made by a cooper were used to transport nails, gunpowder, and a variety of liquids. A keg is normally now constructed of stainless steel, although aluminium can be used if it is coated with plastic on th ...

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.

Conversion kits

A kegerator conversion kit allows you to convert an existing refrigerator into a beer-dispensing kegerator. This may be a more economical solution if you already have the refrigerator or you can find a cheap used refrigerator (at a yard sale, classifieds, etc). An important thing to consider is whether or not the refrigerator will be able to hold a keg. Many refrigerators have a step inside them that houses the compressor and takes up half the bottom of the fridge, meaning that there is not enough space above or in front of the step for the keg. Pre-configured kegerators are designed with this in mind and install the compressor in a manner that allows plenty of room. Conversion kits are configured to either dispense through the door of the fridge or through the top into a draft beer tower. Door mount kits have a shank that goes through the door, with an attachment for the faucet on the outside and a hose nipple for the beer line on the inside. A draft beer tower would extend above the top of the fridge and already includes the faucet, shank and 5' beer line. Installation requires a few rudimentary tools, such as a socket wrench set, screwdriver and a drill with a hole saw bit to modify the refrigerator. The CO₂ tank can be installed inside the fridge if there is enough room, or placed outside the fridge and secured into place. You can also convert a top opening chest freezer into a beer dispenser (sometimes called a keezer) with the use of a thermostat control unit. The advantage of a Keezer is that you are assured it will get cold enough to dispense beer at the proper temperature range (32-38 degrees Fahrenheit) and it usually has more interior floor space than a refrigerator, allowing it to store and dispense more kegs. The disadvantage is that it requires the thermostat to be overridden to ensure you don't freeze your kegs and you have to lift the heavy kegs up and over the freezer wall. You can accomplish this conversion with a tower kegerator conversion kit or build an extension on top of the freezer to mount the door and taps onto it.

Configurations

Kegerators are generally designed for use with beer kegs, but they are gaining popularity for dispensing other types of drinks, most notably

, cold-brewed coffee,

, and

soda Soda or SODA may refer to: Chemistry * Some chemical compounds containing sodium ** Sodium carbonate, washing soda or soda ash ** Sodium bicarbonate, baking soda ** Sodium hydroxide, caustic soda ** Sodium oxide, an alkali metal oxide * Sod ...

. With home brew kegs, you can put whatever liquid you want inside the keg, pressurize it and dispense it with a kegerator. Different types of liquids require different alterations to the dispensing system. Wine and cold brewed coffee use a CO₂/Nitrogen blend to pressurize the kegs. These types of drinks also require all stainless steel contact with the dispense system fittings because the higher acid content can corrode the chrome plated brass normally found in dispense systems. You may also need to change out the beer line for silicone wine line, which is less likely to impart flavors. In many larger cities, coffee houses and wineries are offering their products in commercial kegs for use in a kegerator. If that is not available, you can always fill a home brew keg yourself. Pouring Guinness or other nitrogen beers from a kegerator requires a stout faucet, nitrogen regulator and a nitrogen tank. The stout faucet has a small restrictor disc inside the faucet head. Forcing the beer through the restrictor disc creates the rich and creamy head that nitro beers are known for. A nitrogen regulator or CO2/nitrogen adapter is required and should be set to 30 psi. Nitrogen tanks are filled with a 75% nitrogen and 25% blend referred to as mixed gas or beer gas.

Beer Storage in Keg

For a properly stored keg in a kegerator, how long the beer will remain fresh will depend on the style of beer. Pasteurized beers can stay fresh from three to six months. For non-pasteurized beers, you can expect the keg to stay fresh for approximately two months.

References

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External links

The History of the Kegerator
A 10-part series of articles discussing the rise of cold beer drinking and the kegerator. Drinking culture Beer vessels and serving