Steamist manufactures top of the line steam units in New Jersey and for this steam room we used the SMP system with their 250 time and temperature control. The unit was installed in the attic with a drain pan for safety, both the drain pan and auto drain discharge will go to separate lines outside the house. The auto drain will clean the steam unit after every session and this will keep the tank clean and prevent sediment build up.
I have seen twenty year old Steamist units in the field and they are still working! For residential steam units a yearly maintenance is recommended and this will allow the unit to run smoothly for twenty plus years! If you are looking to build a steam room or retrofit your existing shower into one, Steamist will be a high quality, dependable steam unit that will be worth every penny you spend.