HVAC energy Recovery Ventilator (ERV) Calculator

Ventilation Airflow (CFM) *

Outdoor Air Temperature (°F) *

Return/Exhaust Air Temperature (°F) *

Outdoor Humidity Ratio (grains/lb) *

Return Humidity Ratio (grains/lb) *

Sensible Effectiveness (%) *

Latent Effectiveness (%) *

Annual Operating Hours (hr/year) *

Electricity Rate ($/kWh) *

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How to use HVAC energy Recovery Ventilator (ERV) Calculator

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