Here is a web site of a company based in Windsor Ca. that offer's an interesting Plug and Play Hot Shower option that some of you without Water Heaters may be interested in www.hotwatershowers.com
The system seems to be very user friendly and compact if hose length's are thought out .
Note: the company's name is R&M Speciality Products and will be found about 2/3rds down on the web page .
I was able to pull it up two more times , just now . The page that comes up says that it does not exist but if you go down to the eleventh listing it is shown under R&M Speciality .
Just came up three times in quick succession for me .
The Zodi unit's have been our family favorite for a number of years ,
and they are very compact to boot !
Sorry you are unable to access this site .
I was able to view the link by clicking on the link on your message. This company has been producing this shower since the mid 80's. I remember reading about this kit in a van magazine back then. I probably still have the article. I do remember that they got good reviews for their shower.