By the Numbers: Energy Star homes reach major milestone

1 million

Number of Energy Star-qualified homes built nationwide since the program debuted in 1995. These homes have saved Americans $1.2 billion in energy costs, reduced greenhouse-gas emissions by 22 billion pounds, according to the U.S. Environmental Protection Agency. The top 10 markets for Energy Star homes are Houston, Dallas, Las Vegas, Phoenix, Los Angeles, New York City, Tucson, San Antonio, Sacramento, and San Diego.

To qualify for Energy Star, says the EPA, a new home must be at least 15 percent more efficient than homes built to the 2004 International Residential Code and include other features that make them 20 to 30 percent more efficient than standard home, such as effective insulation, high-performance windows, and efficient heating and cooling equipment, appliances, lighting, and ventilation. (The image below, from Energy Star, shows typical locations of air leaks in a home. Check out our recent Weekend Project on weatherizing your attic.)

"This is an amazing achievement for the Energy Star program, but the real winners are the 1 million American families who have the chance to save money and keep harmful pollution out of the air. That's great news for anyone who wants to cut costs and protect our planet," said EPA Administrator Lisa P. Jackson in a press release. "We're going to keep the number of Energy Star homes growing, because every new Energy Star home is a step towards lower costs, cleaner air, and communities that are environmentally and economically sustainable."

To boost the energy efficiency of your home and save some real money, start with these simple, inexpensive steps and follow our overall advice for using less energy at home.—Celia Kuperszmid Lehrman | e-mail | Twitter | Forums | Facebook

Essential information: If you haven't done so already, get your heating system tuned up and install a programmable thermostat. Also refer to our buyer's guides to furnaces (more details here), water heaters, pellet stoves, and solar water heaters, and find the best compact fluorescent lightbulbs. Remember, some projects might qualify for federal tax credits. If you want energy-efficient appliances, stay up on the news related to the $300 million State Energy Efficient Appliance Rebate Program, also known as cash for clunkers for appliances.