The design temperature of a swim spa hot tub typically doesn't exceed 40°C, while boiling water reaches 100°C. This high temperature can severely impact the heating system and other tub components. Adding boiling water not only harms the equipment but also affects water quality. The water in a swim spa hot tub needs a certain chemical balance to remain clean and safe.

The frequency of disinfection for a whirlpool spa hot tub depends on: • Usage frequency • Number of users • Water volume and circulation system design • Whether chlorine or bromine tablets are used to maintain daily water quality For ordinary household users, thorough disinfection at least once a week is a basic requirement for maintaining water quality safety.

1. Use appropriate chemical disinfectants 1) Chlorine disinfection Recommended chlorine concentration: 1–3 ppm (parts per million). 2) Bromine disinfection Recommended bromine concentration: 3–5 ppm. 3) Hydrogen peroxide disinfection Recommended concentration: 10–20 ppm. 2. Ultraviolet disinfection

If multiple jets are turned on, the increased water flow will also increase the pump load, which may actually reduce the heater's heating efficiency. This is because the heater requires a certain water flow rate to effectively transfer heat, and excessive water flow may dilute the heat transfer effect.

Impact is a crucial step in ensuring water quality and proper functioning of the luxury spa hot tub. The impact time is generally 10–20 minutes, which can be extended to 30 minutes for larger water volumes or complex systems. Frequency is recommended once a week or after each use, depending on the actual situation.

Theoretically, a swim spa hot tub can be installed underground, but its feasibility depends on several factors. Underground spaces are characterized by being enclosed, having high humidity, and limited ventilation, which may affect the normal use and safety of the swim spa hot tub.