• Regularly test the pH, hardness, and residual chlorine content of the hot tub water. • Adjust the dosage of disinfectant and water conditioner based on the test results to maintain stable water quality. • Use a water quality testing kit to ensure that water quality meets safety standards.

• Hot water temperatures are generally between 37 and 40°C (111-124°F), and some bathtubs can be even higher. • High temperatures may affect the balance between the sympathetic and parasympathetic nervous systems, leading to vasodilation and changes in heart rate.

Water temperature is a core indicator of the whirlpool spa hot tub user experience and is directly related to user safety: • Temperature Range The recommended water temperature for a whirlpool spa hot tub is generally between 37°C and 40°C. Temperatures below 37°C may reduce comfort, while prolonged soaking above 40°C may cause low blood pressure, increased heart rate, and even dizziness.

The bathtub area may become slippery due to ice or splashing water in winter, increasing the risk of slips. Recommendations: • Install non-slip mats or rubber mats. • Keep the surrounding floor dry. • Use a ladder or handrail to assist in entering and exiting the bathtub.

Spa Hot Tub: Industry Giants in North America 1. Jacuzzi Brands 2. HotSpring Spas (part of Watkins Wellness) 3. Cal Spas Spa Hot Tub: Manufacturer Power in Europe 1. Wellis (Hungary) 2. Aquavia Spa (Spain) 3. Roca Group (Spain) Spa Hot Tub: Manufacturing Power in Asia Pacific 1. Brands in Australia and New Zealand 2. Manufacturers in China

Outdoor weather conditions are unpredictable, and heavy rain, snow, humidity, and strong winds can pose a threat to exposed wiring. If the wiring in an outdoor spa hot tub is not properly protected, it can lead to serious accidents such as short circuits, electric shocks, and even fires.