In addition to the cost of the unit, expect to pay a contractor to install the steam shower. And be aware that, because the unit puts a tremendous amount of moisture into the air, the shower enclosure—and the bathroom—will have to be designed to handle it (or else you’re likely to have a problem with mold and/or moisture damage).

If you purchase a steam shower kit from a local dealer, ask for the name of a plumber or electrician with experience in adding these devices to bathrooms. This should save you money on the costs for installation.

It’s also a good idea to get a one- to three- year warranty with a steam shower unit. The last thing you need is a leaky unit or one that fails to produce enough steam. Without a warranty, you may face expensive repairs and not get complete satisfaction.