The ideal energy-saving temperature for a whirlpool hot tub should be maintained between 34℃–37℃. This range ensures a comfortable spa experience while avoiding unnecessary energy consumption. If the equipment is operated outdoors or in cold climates, the minimum temperature can be increased by 1–2℃ to prevent excessive heat loss.

Researchers and health experts generally believe that spa hot tubs do not directly "cure depression," but rather indirectly alleviate depression-related symptoms by promoting relaxation, improving sleep, and lowering stress hormone levels.

If your spa hot tub has the following characteristics, it is not recommended to use it as a shower: • The bathtub is made of thin acrylic walls, which are not suitable for standing; • It lacks an anti-slip bottom or safety handles; • Electrical components are exposed or close to the shower head area;

The water temperature in a regular bathtub gradually decreases, while a spa hot tub is equipped with a constant temperature heater, maintaining a constant temperature. This means the body's sweating response lasts longer, resulting in greater water loss.

Most spa hot tubs are equipped with electric heaters or heat pumps, using a temperature sensor to monitor the water temperature in real time. When the water temperature drops below the set value, the system automatically heats up; once the target temperature is reached, heating stops to maintain a stable temperature.

The temperature of a whirlpool spa hot tub is usually slightly higher than body temperature. The heat stimulates the dilation of capillaries, accelerating blood flow. The heat also increases the metabolic rate of epidermal cells, making it easier for dead skin cells to shed, resulting in a smoother new cell layer.