Construction
SEER / EER Conversion Calculator
SEER, SEER2, EER, kW/ton — different units all describing AC efficiency. Convert and estimate annual operating cost.
Annual cost
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- EER (est)
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- kWh/year
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- kW/ton
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FAQ
SEER vs SEER2? +
SEER2 (2023+) uses higher static pressure testing — typically 5% lower than old SEER for the same unit. Same physical efficiency.
Worth upgrading SEER 13 to 18? +
In hot climates (1500+ cooling hours), yes — payback in 5-7 years. In mild climates, take longer than equipment life.