VOCA Life Systems

[voca-ls]

http://www.dwell.com/renovation/article/industrial-shipping-container-bathroom

[voca-ls]

 Eccotemp L5 portable tankless water heater. Just connect it to a pressurized water source (20–80 PSI is ideal) and a bulk propane tank and you'll have on-demand hot waterTotal output of 37,500 BTU; total dimensions are 11.5in.W x 4.5in.D x 14.5in.H.