a) Built in indoor hot tub
b) Portable hot tub spa
c)  Self contained hot tub unit

The Built in indoor hot tubs are available in a different shapes, sizes and styles.  You can have any shape or size or style according your imagination. The designed can be done base on your imagination guideline as a basic guideline.  Actually a built in hot tub is designed into a new model or new design. It also can be made using fiberglass or plastic such as normal hot tub or they can build it from tiles, concrete or stones.

Portable hot tub is the best and excellent. It also the economical way to be install in your home. You can put it anywhere you want it in your home. Basement, back yard, garden just name it any place and surely you can put it. The portable hot tub is also easy to install. The place that you want to pace the portable hot tub must have the power source such as electric supply and water supply. That is the main requirements of the portable hot tub.  Generally the portable hot tub will use 110 volt current a GFI outlet needs to be used to avoid the risk of electrical shock.

The Self contained hot tub is more expensive rather that portable hot tub.  But it is not expensive if you compare with the Built in indoor hot tub. Know that these self-contained units can be moved and re-installed elsewhere, if you choose. Non self-contained hot tubs are installed in ground and are considered permanent. Often these spas are part of a spa-pool combination; the electrical, filtration and heating systems are located away from the spa.