Built in/ free standing Like with normal fridges, you can divide kegerators up into free standing and suitable for building into a cabinet. Kegerators suitable for building in, have different ventilation solutions than free standing versions. Builing in a free standing kegerator will likely lead to overheating and the keg not being at the right temperature. Commercial The name makes pretty clear what this type of kegerator is meant for. They can be used for pubs, bars, clubs, restaurants, ect. They work really well and most of them are great products. They often also look a bit “industrial” and might not look too great in a man cave. They are also quite expensive. Unless you’re serving hundreds of beers night after night, you don’t need one of these at home. Small sizes Another type of kegerator is the small or mini version. These are made to cool the smaller kegs. Mainly the 5 liter kegs. Many of these kegerators are quite small tabletop versions. Outdoor The last type is the outdoor kegerator. These are made to work well in outdoor conditions. Indoor the temperature range is more moderate than outside. That’s what the thermostat and the cooling system of an indoor version is geared towards. Outside the temperature range is much wider. The moments when you want your kegerator outside, the temperature is likely higher. A summer party or BBQ is likely to see higher ambient temperatures. Of course you can use them outside in the winter too but that’s much less likely to happen. Another difference is that outdoor kegerators are often meant to be mobile. They have wheels to be able to move them around easily. Even though they are outdoor minded, leaving them outside year round will degrade them quickly.