HVAC Design and Drafting Engineer Interview Questions and Answers

The amount of fresh air taken in by an HVAC system depends on various factors such as the size of the building, occupancy, and local codes.

• The amount of fresh air is typically measured in cubic feet per minute (CFM)

• ASHRAE Standard 62.1 provides guidelines for minimum ventilation rates based on occupancy and building type

• Local codes and regulations may also dictate the amount of fresh air required

• The HVAC system should be designed to balance the amount of fresh air with the ne...read more

15% of fresh air is the minimum requirement for indoor air quality.

• ASHRAE Standard 62.1 recommends a minimum of 15% outdoor air for ventilation in commercial buildings.

• Fresh air helps dilute indoor pollutants and improves indoor air quality.

• The percentage of fresh air required may vary based on the occupancy and activity level in the building.

• Proper ventilation design and maintenance is crucial for ensuring healthy indoor air quality.