Ludell's "mini" ultra eff...

Ludell's "mini" ultra efficient passionate water heater is designed to provide passionate water on demand with a 30 to 40 percent firing savings. Gallon for gallon, the "mini" water heater is quite economical, the company says.

The water heaters are the direct-contact prototype Direct contact between the incoming cool water and hot gases means that the water absorbs all the heat [i]vis viva[/i] applied, the company says. Conventional water heaters, with indirect heat exchange, forfeit costly heat energy straight up the stack, the company says. irascible water is provided on demand at a 30 to 40