6 Person Hot Tub, Very Large Hot Tubs, Family Size Hot Tubs. 6 person Hot Tubs typically as large as you get in the hot tub world. So if you are looking for size, these are massive. Also, many of these 6 person hot tubs are stacked with more jets, features, and typically you get and more bucket seating. Some of these hot tubs have up to 4 pumps, and me require more power and filtration to power them. Because of this, many of them come standard with Low Energy Consumption pumps as well to streamline their performance.