Outdoor spa hot tub structures and heaters are designed to operate at specific water temperatures. Frequent use of extremely cold ice cubes may damage components such as the heater and pump due to the extreme temperature fluctuations.

Due to voltage drops, extension cords may not provide stable voltage. This not only affects the operation of the whirlpool hot tub but can also damage the device. Large voltage fluctuations can damage electronic components, making repairs costly and potentially requiring the entire device to be replaced.

Excessive shock agents, especially those containing chlorine, release large amounts of free chlorine. Excessive chlorine not only makes the whirlpool spa hot tub water pungent but can also cause irritation to the user's skin, eyes, and respiratory tract.

A spa jacuzzi bathtub filter can effectively reduce microorganisms and bacteria in the water, especially in hot water, where bacteria are more likely to grow. If the filter is not replaced or cleaned regularly, bacteria and algae can multiply in the water, potentially endangering the user's health.

When boiling water is poured directly into an outdoor acrylic spa bathtub, the instantaneous high temperature may cause temperature difference stress in the bathtub material. This uneven heating process may cause tiny cracks or even complete rupture of acrylic.

A common infection caused by low bromine levels is "Hot Tub Rash", a skin disease caused by Pseudomonas aeruginosa. When the bromine content in outdoor spa hot tub water is insufficient, bacteria can easily multiply, causing redness, itching and pain on the skin, and in severe cases, rashes and pustules may even appear.