Clothes dryer vs. portable spa (hot tub)
Both of these require a large amount of electricity to run because both produce a lot of heat. However, the hot tub uses much more than a clothes dryer. It is larger than a dryer, and much of the heat escapes from the hot tub while in use, unlike the dryer. As a side note, if choosing between a portable spa or an in-the-ground spa, choose a portable one because they tend to be better insulated and usually include covers to help heat from escaping. The cover is essential not only for the maintenance of your hot tub, but for keeping your electricity costs down.
Source:California Energy Commission
