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What does the “EER” or “SEER” rating on an air conditioner mean?

April 26, 2017air conditioner EER mean rating SEER

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What does the “EER” or “SEER” rating on an air conditioner mean?

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A. Both EER (Energy Efficiency Ratio) and SEER (Seasonal Energy Efficiency Ratio) are indicators of how efficient the unit is. The higher the number, the more efficient the unit and the lower the operating cost. SEER is used with central air conditioners, while EER is used with room air conditioners. For new central systems, SEERs of 12 or higher are generally considered high-efficiency units. For room units, EERs of 11 or higher are considered high-efficiency.