Technivorm manufactures home coffee brewers in two basic categories, units that incorporate a thermal carafe for keeping your brew hot for an extended period of time, and units without a thermal carafe, but with a separate heating element to keep your brew piping hot! We recommend you choose a unit that fits your needs, so if you have the need to keep your brew hot longer, without the over-cooked taste of a pot that has sat on a burner for a long time, we recommend a unit with a thermal carafe. If you go through your pot fairly quickly, as in a busy office environment, the need for a unit with a thermal carafe may be over-kill. All Technivorm coffee maker units incorporate a heavy duty extruded aluminum body, and solid copper heating element, there are no internal components made from aluminum that come in contact with the your brew! Technivorm builds their coffee brewers to withstand years of continual service, while also keeping in mind the need for using durable, safe, human friendly materials in their manufacturing processes. Technivorm units are all made with easily removable parts for proper cleaning and maintenance. When brewing a great cup of coffee, its important that the water is at an optimal temperature of 200F before introducing the water to the coffee grounds, which ensures proper extraction. All Technivorm units, by design, are one of the few brewers on the market that reach the correct water temperatures during your brewing process. Technivorm coffee brewers are designed to move the proper amount of water - 40 ounces - in the correct amount of time - 5 minutes, for optimal coffee brewing.