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HVAC CALCULATOR

SEER savings calculator

Compare a simplified annual cooling-energy estimate across two efficiency levels using your current annual cooling electricity use.

Enter a positive annual estimate, such as 2,400 kWh.
Enter the efficiency rating of the current system.
Enter the efficiency rating you want to compare.
Use your utility rate in dollars per kWh, such as 0.18.

Method: current annual cooling electricity use × electricity rate = current annual cost. Estimated new cost = current annual cost × current SEER ÷ new SEER. Confidence: D (derived); actual savings depend on usage, climate, maintenance, system sizing, and how SEER is measured. Last reviewed: 2026-08-29.