Get CA NRCA-MCH-06-A 2013-2024

To keep the LEED credit, CO2 sensors must be re-calibrated every 5 years. In addition, the sensors must be accurate to within 75ppm or 5% of the actual CO2 level, whichever is greater.

CO2 Levels and your Health Normal outdoor air has around 400 ppm. Occupied spaces with good air exchange usually have 400-1,000 ppm. Levels of 1,000-2,000 ppm often associate complaints of drowsiness and poor air quality.

General indoor environments: In most indoor settings, a CO2 concentration of 400-1000 ppm is considered acceptable. This range is commonly used as a guideline for maintaining good indoor air quality in homes, offices, and public spaces.

Title 24 establishes the following requirements for the sensors/detectors and controls used in DCV: Installing at least one CO2 occupancy sensor for every 10,000 sq. ft. CO2 detectors should be between 3 and 6 ft.

Acceptable Levels: CO2 levels below 1,000 ppm are generally considered acceptable for most indoor environments. This level ensures adequate ventilation and a reasonably fresh indoor air quality. Ventilation Standards: Some countries or organizations have specific regulations or standards for CO2 levels in buildings.

Interior CO2 concentration setpoint is ≤ 600 ppm plus outdoor air CO2 value if outside concentration is measured dynamically. Otherwise, setpoint is ≤ 1000 ppm. Outdoor air CO2 concentration can be determined by three methods: 1. Assume a value of 400 ppm without any direct measurement.