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Common home hot tubs are usually equipped with 3kW to 5kW heaters. For example, a 3kW heater can heat about 2°C to 3°C per hour. If you want to heat from 15°C to 40°C, it theoretically takes about 8 hours. In contrast, if it is a 5kW heater, the time required may be shortened to about 5 hours.

The relatively low power of the plug-and-play hot tub's heater means that the water will heat up more slowly in cold environments. Especially when the outdoor temperature is near or below freezing, the tub will take more time to heat the water to the ideal temperature.

Diseases that can be spread in hot tubs: 1. Legionnaires' disease (causing severe pneumonia), 2. Pseudomonas infection (ear, urinary tract infection), 3. Skin fungal infection (skin itching, erythema), 4. Norovirus infection (diarrhea, vomiting, fever), 5. Mold infection (cough, nasal congestion).

A hot environment causes the body to expend more energy to maintain internal temperature balance and stimulates the activity of the sympathetic nervous system. Increased activity of the sympathetic nervous system leads to increased adrenaline secretion, faster heartbeat, and possibly higher breathing rate.

Most free-standing hot tubs do not need to be fixed directly to the floor when installed. This is because the design and materials of free-standing tubs are usually stable enough, especially when filled with water, and the weight is greatly increased, so it is not easy to slide or tilt.

For most home outdoor whirlpool tubs, experts generally recommend draining and refilling every three months. This time frame is suitable for a bathtub with normal frequency of use, which can effectively maintain healthy water quality and prevent bacterial growth.

The Cleveland Clinic even reports on the benefits of water exercise for the heart. An article on the organization's website states that the cardiovascular benefits of swimming include improved cholesterol levels, lower blood pressure and a reduced risk of heart disease.

The use environment of a whirlpool hot tub is inherently very suitable for mold growth. Bathrooms are usually humid and poorly ventilated spaces. The humidity in the bathroom is further increased during bathing, and the water temperature is usually kept in a high range (30-40 degrees Celsius), providing ideal conditions for the growth of mold.

A user who uses the hot tub for a few hours a day may find that the heater fails after 4 to 5 years, while a user who uses it a few times a week may extend it to more than 7 years. Therefore, the frequency of use directly affects the life of the heater.

The main function of a massage bathtub is to promote the overall health and relaxation of the skin, rather than as a dedicated exfoliating tool. Therefore, if you want to effectively remove dead skin, you still need to combine other skin care methods.

Moving an empty massage bathtub requires lifting one end first. You can use a crowbar to gently pry up at the bottom of the bathtub, and then insert wooden boards or sliding pads into the bottom of the bathtub. This allows the bathtub to slide on the ground and reduce the difficulty of lifting with force.

In 2017, Jacuzzi Brands LLC announced the acquisition of Hydropool Inc. as part of Jacuzzi's strategic expansion plan. The acquisition enables Jacuzzi to further enrich its product line, especially in the areas of swim spas and hot tubs.