What is the roll of ppm in HVAC system?

PPM, or parts per million, in HVAC systems is a critical measure used to assess air quality, particularly concerning the concentration of pollutants or contaminants in the air. It helps in monitoring levels of carbon dioxide, volatile organic compounds, and other harmful substances, ensuring that indoor environments remain safe and comfortable. Properly managing PPM levels can enhance energy efficiency and system performance while promoting occupant health and well-being. Regular monitoring and adjustments based on PPM readings are essential for maintaining optimal air quality in HVAC operations.