Hot Tub Installations business. You'll have more clients hot on your trail once they see your hot tub installations. Business Overview Hot tubs make a great addition to any home. However, the focus of this new business opportunity is not aimed at hot tub sales, but at the installation of hot tubs. In order for a hot tub to properly work and be safe for the occupants, it must be installed correctly, including the electrical hook-up and a solid foundation base. Starting your own...