If yours is old it likely rates at 5.5 gallons per minute(gpm) or more. Newer ones can be as low as 1.5 gpm. Look for a model that's at least lower than 2.5 gpm. That's approximately 45 gallons of water saved per 15 minute shower. Think about all the hot water you're not having to heat.
21 Real Life Ways to Go Green
Tips and ideas to make your home more efficient, comfortable and livable.