3. B. CENTRAL AIR CONDITIONER

  • Central air conditioners that have earned the ENERGY STAR are about 16 percent more efficient than conventional models.
    Source: U.S. EPA.
  • If your central air conditioning unit is more than 12 years old, replacing it with a model that has earned the ENERGY STAR could cut your cooling costs by 30 percent. These savings would prevent 1,500 pounds of greenhouse gas emissions annually.
    Source: U.S. EPA.

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Updated: June 2013