High carbon dioxide (CO₂) levels are a common sign of poor ventilation in homes and offices. If indoor air feels stuffy, occupants report headaches or fatigue, or meeting rooms become uncomfortable when crowded, CO₂ may be part of the issue. LCS Laboratory Inc. provides professional carbon dioxide testing as part of our Indoor Air Quality (IAQ) investigations.
Why Test Carbon Dioxide Indoors?
Carbon dioxide is a natural component of outdoor air, typically around 400 parts per million (ppm). Indoors, CO₂ levels can rise when fresh air exchange is limited. The two main sources are:
- Human respiration (metabolic CO₂)
- Combustion sources, such as natural gas appliances, fireplaces, wood stoves, kerosene heaters, candles, and tobacco smoke
Because CO₂ builds up when ventilation is inadequate, it is widely used by air quality consultants and building professionals as a practical indicator of ventilation performance.
What Are Acceptable Indoor CO₂ Levels?
In many buildings, occupants begin to notice air quality concerns when CO₂ levels exceed about 1,100–1,500 ppm. While comfort issues may appear at these levels, health-based guidance is higher. Health Canada recommends a long-term exposure guideline of 3,500 ppm to prevent potential health effects.
CO₂ testing does not replace a full indoor air quality assessment, but it is an important first step in identifying ventilation deficiencies and understanding occupant complaints.
Our Approach to CO₂ and IAQ Testing
At LCS Laboratory Inc., carbon dioxide measurements are typically conducted alongside:
- Carbon monoxide testing
- Temperature measurement
- Relative humidity assessment
Reviewing these parameters together provides a clearer picture of building conditions. For example, elevated CO₂ combined with high humidity may indicate insufficient fresh air supply, while elevated CO₂ near combustion appliances may warrant further safety checks.
Our testing is suitable for:
- Homeowners concerned about indoor air quality
- Property managers and office administrators
- Schools and daycare facilities
- Air quality consultants seeking reliable field measurements
Protect your indoor environment and ensure the well-being of occupants. For more information about carbon dioxide testing or to schedule an IAQ screening, email us today. Visit our Indoor Air Quality page for additional details: IAQ Testing Services. ©
