ThermaSol generators look good and create steam in seconds. Controls are made of sturdy metal, and a patented design ensures no noisy solenoid valves. The unit can be installed up to 50 feet away from any existing shower. According to ThermaSol, their generator requires a fraction of the water needed to power a regular shower, using only two gallons of water to take a 20-minute steam bath, as opposed to the usual 40 gallons needed to take a regular shower.
About $1490- $4920, ThermaSol