Inflatable hot tubs are becoming increasingly popular, but many people wonder whether they are expensive to run. The answer depends on a number of factors, including the size of the tub, the temperature you keep the water, and the frequency of use. Generally speaking, inflatable hot tubs are more energy-efficient than traditional models, but they still require a fair amount of electricity to operate. For example, a typical inflatable hot tub with a capacity of 200 gallons will use about 1,500 watts of power when set to 104 degrees Fahrenheit. Of course, inflatable hot tubs also require regular maintenance, so be sure to factor those costs into your budget as well. Overall, inflatable hot tubs can be a bit pricey to operate, but many people feel that the benefits outweigh the costs.