Address: 160 Fremont St UNIT 223a, Worcester, MA 01603 Phone: 888-524-1619 Website: https://supremesaunas.com Supreme Saunas is the one-stop shop for all sauna related things and education. Supreme saunas sells both indoor and outdoor saunas, infrared saunas, steam showers, and jetted tubs for both 1-2 people and even bigger 3+ people saunas.