The new generations of manufactured homes are energy efficient. Factories now outfit manufactured homes with ENERGY STAR appliances. Builders take great care in making sure each home is tightly constructed with efficient heating and cooling systems, water heaters, and high-performance windows.
How much money can a manufactured home save a person? Let's look at one example. A few years ago, North Carolina A&T University and the U.S. Department of Energy studied the energy efficiency of one type of manufactured home. The university built two houses on the Greensboro campus. Each three-bedroom, three-bath house was 1,528 square feet (142 square meters) [source: U.S. Department of Energy].
Although the homes were unoccupied, researchers rigged up the lights and appliances with timers to simulate normal energy use. One house was a "base" house that acted as a control. The other was an "energy" house, which was built with energy-efficient materials and appliances. Researchers expected the energy house to be 50 percent more energy efficient than the base house. After studying both houses for an entire winter heating season and summer cooling season, researchers found that the energy house actually exceeded expectations with an overall savings of 55 percent [source: U.S. Department of Energy].