Acrylic shell with overflow channels
At the heart of USSPA’s commercial hot tubs lies an ergonomically shaped acrylic shell fitted with a hydromassage system. The very shape of the hot tub must take into account the specific requirements of public use. Whilst skimmers are sufficient for draining water into the filtration system in private spas, overflow channels covering at least two-thirds of the wetted perimeter are a typical and essential feature of professional hot tubs. These ensure rapid water exchange from the surface. The water then flows through a storage tank into the filtration system, from which it returns to the spa shell after chemical treatment and heating. The entire system is designed to operate with a significantly larger volume of water than is contained in the spa itself, which is an important prerequisite for the rapid dilution of impurities in the water and its effective maintenance in accordance with strict hygiene standards.