Demand Control Ventilation Calculator

Calculate outdoor air requirements based on occupancy using CO2 sensors for demand control ventilation.

Measured CO2 concentration in space.
ppm
Outdoor air CO2 concentration (typically 400-450 ppm).
ppm
Target CO2 setpoint (ASHRAE recommends 1000 ppm).
ppm
Total supply air to space.
CFM

Results

Required Outdoor Air-CFM
OA Percentage-%
Ventilation Rate per Person-CFM/person
References: ASHRAE Standard 62.1. Ventilation for Acceptable Indoor Air Quality. Demand control ventilation using CO2 sensors.