Most break room coffee makers are simple residential units, and for most break rooms that is all that is needed. However, larger break rooms may need something that can make more than a single pot of coffee at once. That’s where the larger commercial units come into play. Commercial brewers can make several liters of coffee at once. The most popular high-volume coffee maker that is found in a lunch room is the kind that brews into an air pot. The pots are insulated and will keep the coffee warm for hours, without the use of an external heat source that may burn the coffee. If you want to offer more than one blend in the break room, you can use a dual brew unit that can brew two separate batches of coffee at the same time.