Capacity varies by model, but 12-cup thermal coffee makers commonly hold roughly 51 ounces up to about 96 ounces.
Common designs include removable glass carafes, double-walled insulated (thermal) carafes for heat retention, and models that use a built-in dispenser to pour directly into cups or travel mugs instead of a traditional carafe.
Many models offer programmability (for example 24-hour or delay brew), multiple brew-strength or style settings (such as Classic/Rich or Regular/Bold), a digital clock, and a brew-pause (mid-brew) feature.
Some machines include a small-batch mode that brews only 1–4 cups to prevent dilution when you don’t need a full pot. Many also have a mid-brew or pause-and-serve feature that temporarily stops flow so you can pour a cup before brewing finishes.
They use several filter options, including disposable paper filters, cone filters, basket filters, and permanent filters such as mesh screens or gold-tone filters.
Some models replace a carafe with an internal heated dispenser, others keep brewed coffee on an adjustable warming plate, and many use a double-walled insulated (thermal) carafe to retain heat without scorching.
Cup sizes typically range from about 4 oz up to 14 oz. Carafe modes commonly list 2, 4, 6, 8, 10, and 12-cup settings, and some single-serve or pod modes show cup sizes in the 6–14 oz range.
