Department of Energy Mandates More Efficient Air Conditioners

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The Department of Energy has announced that it will enforce a 13 seasonal energy efficiency rating or “SEER” standard for residential central air conditioners.

WASHINGTON — The Department of Energy has announced that it will enforce a 13 seasonal energy efficiency rating or “SEER” standard for residential central air conditioners. This standard, which will apply to central air conditioners starting in January 2006, increases by 30 percent the SEER standard that applies to models sold today.


“At this point, all parties have had their day in court,” Assistant Secretary for Energy Efficiency and Renewable Energy David Garman said. “DOE will enforce the 13 SEER standard. In the interest of giving consumers and industry the regulatory certainty they need, it is time for the government and for private parties to stop litigating, and start working towards complying with the 13 SEER standard.”


The Energy Department had promulgated a 12 SEER standard in 2002, but earlier this year, the U.S. Court of Appeals for the Second Circuit ruled that the department had done so improperly. The air conditioner manufacturing industry had challenged the 13 SEER, which DOE had issued in January 2001, but recently withdrew its challenge.


SEER measures how efficiently a residential central cooling system will operate over a cooling season. A higher SEER reflects a more efficient cooling system. SEER is calculated based on the total amount of cooling in BTUs the system will provide over the season divided by the total number of watt-hours it will consume. Currently, all air conditioners sold in the US must have a rating of at least 10.Source: US Department of Energy