Tankless water heater manufacturer Rinnai Corp. posted a billboard on California’s 405 freeway displaying the millions of dollars wasted in California each day by homes and businesses heating their water with inefficient water tanks.

Tankless water heater manufacturerRinnai Corp.posted a billboard on California’s 405 freeway displaying the millions of dollars wasted in California each day by homes and businesses heating their water with inefficient water tanks. The billboard features an LED display with a running daily total of the money wasted in California by heating water in tanks.  

According to an annual estimated cost from the Gas Appliance Manufacturers Association and energy factor from the May 2007 Consumers Directory of Certified Efficiency Ratings, the 13 million single-family homes in California waste approximately $5.1 million daily heating water with tank-type water heaters.