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Economizer Hours Calculator

Estimate free cooling hours by climate zone.

Enter the climate zone (1-8) value for this calculation.
Thermal measurement in specified units (°F, °C, or K).
°F
Enter the economizer type (1=air, 2=water) value for this calculation.

Results

Full Economizer Hours:
Calculated full economizer hours based on your inputs.
-hrs/yr
Partial Economizer Hours:
Calculated partial economizer hours based on your inputs.
-hrs/yr
Est. Energy Savings:
Calculated energy value.
-%
Reference: TIA-942 Standards. ASHRAE climate zones.