Bathrooms: green = $$

Going green with your bathroom could mean extra green in your wallet.

According to the National Association of Homebuilders, just a few energy and water efficient upgrades can save you hundreds of dollars a year.

• An energy efficient, tankless water heater. Average lifespan: 10 to 11 years. Heating water can generate abot 15 percent of a homes' energy bill. An efficient heater can save households $40 to $100 per year in energy coss.
• High-efficiency showerhead. Average lifespan: the life of the home. The showerhead can save about $15 per year on water bills.
• High-efficiency toilet. Average lifespan: 10 years. Though some parts might need to be replaced, the typical toilet can last practically forever. A high-efficiency model can save more than $90 per year on water bills.
• Energy-Star-rated exhaust fan. Average lifespan: 10 years. This fan can save up to $120 in electricity use over the life of the product.
• High-efficiency bathroom faucets. Average lifespan: 20 years. They save about $3 per year in water usage, but over the life of the product you can save around $60.