Here in Vancouver I have worked with "Relax - A - Mist", "Mr. Steam" , "ThermaSol", "Kohler", "Steamist" and "Roma" steamer units.
Of these six I like how quite and fast the "ThermaSol" unit is the most. I would say the "Relax - A - Mist" is the cheapest unit of the lot but does offer up a good steam shower experience. There are many parts and features to a steam system and understanding how to size the steam unit is key to an enjoyable experience or not.
Lets take a quick look at an average steam shower (well maybea little larger than average)
Lets say you have a 4' wide by 5' long shower with a 8' ceiling height.
What is the right steam unit for your shower? Is there more info that's needed? Does your choice in tile affect the choice in generators???
Lets look at the top five choices right now in North America. Those being steam generators by Amerec, Kohler, ThermaSol, Steamist and Mr. Steam
Currently you could install one of these units....
#1) ThermaSol Pro 240
#2) Mr. Steam MS400E
#3) Steamist TSG-10
#4) Kohler K1733
#5) Amerec 3K10
There are very little codes in regards to Steam Showers so when your planning your project understand that these units can most times just be dropped next to the steamer and hooked up. I would advise you to follow the commercial guidelines and opt for extra safety and piece of mind. Consider placement and service of the unit in your bathrooms lay out.
For my sizing I used the shower measurements listed and took in to consideration that Marble tile would be used. That there was a fixed bench roughly 6 cubic feet in size. That two walls (7'x8') where glass and that the one 4' wall was an exterior wall. Working through the different selection tools is confusing but when you step back and then look at one key number - The Kilo Watts you see a common theme emerging.
The KW's for the units above are;
#1) ThermaSol Pro 240 - 10KW
#2) Mr. Steam MS400E - 9KW
#3) Steamist TSG-10 - 10KW
#4) Kohler K1733 - 9KW
#5) Amerec 3K10 - 10KW
Good Luck. If you need help sizing your next steam generator like this lady from California please send me an email and I'll explain the process to you. Come back and let us know what you decided and why..