Eemax manufactures a complete line of tank less water heaters. Eemax was established in 1988 with a line of tank less heaters for commercial applications ranging in size from .5gpm to about 1.5gpm. The original Eemax technology was patented and quickly emerged as the most flexible technology on the market, which was a critical factor in the early stages of the development of the US market for electric tank less heaters.