Bedroom CO2 levels impact restful sleep

Bedroom CO2 levels impact restful sleep

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Elevated indoor levels of carbon dioxide affect human brain and overall health. Unfortunately, many schools, cars, gyms, offices, meeting rooms, and bedrooms have concerning levels of carbon dioxide that impact our cognitive and decision-making abilities.

The colorless, odorless gas is created from metabolic activity. People and animals exhale carbon dioxide. Thus, overcrowded spaces without ventilation can contain very high levels and closed, poorly ventilated spaces often have carbon dioxide levels greater than 1,000 parts per million. 

Headaches, impaired mental function, lethargy and even reduced school attendance have all been linked to high carbon dioxide concentrations that many people are exposed to in their daily lives for hours at a time.

Unfortunately, many schools, building managers, landlords and homeowners are unaware of the issue and don’t take corrective action to improve indoor air quality, according to comfort solutions leader Zehnder America.

High indoor levels of carbon dioxide

Typically, carbon dioxide levels rise during the night when people are sleeping, especially if the door and windows are closed. The concentrations fall during the day if the room is unoccupied. Unfortunately, poor air quality can hinder restful sleep and optimum health in many homes.

Studies also show that classrooms and offices often have elevated carbon dioxide levels that sometimes exceed 2,000 or even 3,000 ppm. Prolonged exposure, especially in unventilated spaces, is especially concerning given that high cognitive function is especially important in school and workplace settings.

Fresh air solutions

Elevated carbon dioxide concentrations are an indication that there isn’t enough fresh air in many buildings and homes. Tight construction allows less air to exchange between the inside and the outside, requiring mechanical ventilation.

When possible, opening windows and doors can help dilute indoor pollutants. 

Exhaust fans in bathrooms and range hoods in kitchens are helpful for removing moisture, odors and particles but do not necessarily lower carbon dioxide concentrations elsewhere. In addition, exhaust fans are often ineffective in tightly constructed spaces because makeup air is needed to replace the exhausted air. 

Balanced ventilation solutions are a good option in tightly constructed homes and buildings because they both exhaust carbon dioxide and supply fresh air, allowing air to exchange between the inside and outside of the building.


Topics: Dehumidifiers and Air Purifiers, Indoor Air Quality, Ventilation

Companies: Zehnder America

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