cigarette smoke as an example of semi- volatile liquidLCS Laboratory offers testing of Carbon Dioxide level (CO2) in residential air as a part of our Indoor Air Quality (IAQ) screening survey. CO2 is a natural component of clean outdoor air with typical concentration of about 400 parts per million (ppm).

Indoor Carbon Dioxide comes from two different sources: Metabolic CO2 produced by breathing; and CO2 formed as a product of combustion of fuel, tobacco, candles, natural gas, heating oil, kerosene, wood and so on.

Typical comfort level for carbon dioxide is somewhere below 1100 – 1500 ppm. At this concentration of CO2, tenants typically have no complains about air quality.   Health Canada recommends the highest safe level of Carbon Dioxide at 3500 ppm, as a concentration where only limited health effect can be detected (Health Canada. Exposure Guidelines for Residential Indoor Air Quality. 1987, ISBN: 0-662-17882-3).

Effect of Carbon Dioxide level in your house can be better understood understood in connection with other parameters: such as Carbon Monoxide and Humidity level that are tested as a part of our extensive Indoor Air Quality screening. To learn more about this service, please visit the IAQ webpage