Air Change Rate Calculator

Perform simple natural ventilation calculations for a specific room with this free tool. Based on your input, it will calculate an estimate of the air change rate in a room at the least favorable wind conditions. The air change rate is defined by the air flow rate multiplied with the volume of a room. The result will also show the air change rate as a function of the temperature difference between indoor and outdoor to indicate the performance based on thermal buoyancy. If you have more complex calculation needs, contact our Cleantech Engineers.