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COP EER SEER Converter

Convert between COP, EER, and estimated SEER.

Inputs

Inputs and assumptions

From the nameplate or spec sheet. EER is steady-state, SEER is seasonal, so no exact conversion exists; the SEER figure is a same-lineup guess only.

Result

COP
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Very rough SEER equivalent
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What to check

  • Nameplate EER

Related calculators

Screening estimate only. Verify duct measurements, nameplate ratings, and installer quotes before making a decision.

Saved calculations

Keep the assumptions with the result.

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