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Table 15.  Residential Appliance Efficiency Standards Credited with Savings in CEF

Appliance

Standard

Year Implemented

Central Air Conditioners and Heat Pumps

13 SEER

2006

Room Air Conditioners

10.5 EER

2010

Clothes Washers

Horizontal Axis, 1.26 MEF

2006

Natural Gas Hot Water Heaters

0.60 EF

2004

Electric Hot Water Heaters

0.95 EF

2004

Refrigerators (Advanced Case Only)

421 kilowatthours per year

2010

Note: EF is energy factor (Btu out per Btu in); SEER is seasonal energy efficiency ratio (Btu out per watthour in); MEF is modified energy factor (cubic foot per kilowatthour per cycle); EER is energy efficiency ratio (Btu out per watthour in).
Source: Energy Information Administration, Office of Integrated Analysis and Forecasting.

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