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What is Carbon Dioxide (CO₂)?

Carbon Dioxide (CO₂) is a transparent gas and natural component of air, that acts as a greenhouse gas in the atmosphere. It is generally harmless in small quantities but can affect severely as the quantities rise, especially indoors where ventilation is low and indoor air cannot recirculate. Hence, it can impact sleep patterns, productivity, concentration levels, etc.

How is it important in the environment?

CO₂ helps plants in the process of photosynthesis, a process through which plants make their food. Many animals and humans both depend on plants for their survival. Therefore photosynthesis is important for the survival of plants, animals, and humans.
CO₂ helps in trapping the heat and energy from the sun within the earths atmosphere. Because this helps in preventing the temperature from getting inhospitably cold and oceans from freezing into solid.

What do indoor Carbon Dioxide (CO₂) levels say?

CO₂ is commonly measured in PPM (Parts Per Million). ASHRAE (The American Society of Heating, Refrigerating and Air-Conditioning Engineers) recommended that carbon dioxide levels indoors should be maintained below 1000 ppm.

Good

300-600
Good

Satisfactory

601-800
Satisfactory

Moderate

801-1000
Moderate

Poor

1001-1200
Poor

Very poor

1201-1500
Very poor

Severe

1501+
Severe
*As per CBCB. 8-h hourly average values.

Where does Carbon Dioxide (CO2) come from indoors?

The main source of CO₂ indoors is respiration. Because as we inhale oxygen and release CO₂. In the modern age, homes are becoming more airtight, ventilation does not happen that frequently and fresh air cannot enter indoors. Many ventilation systems that are used nowadays recirculate the air indoors rather than bringing less CO₂ contaminated air from outdoors. As a result, the same air is recirculating and recirculating. Hence, this increases the carbon dioxide contamination indoors.
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Health Effects

High levels of CO₂ are responsible for

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1. Lower productivity

Lower productivity

High CO₂ levels can impact cognitive function

High CO₂ affects concentration and attention and in turn productivity.

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2. Disturbed sleep

Disturbed sleep

CO₂ elevation disrupts sleep quality

When limits exceed, one can have difficulty in their sleeping patterns as well.

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3. Increased blood pressure & heart rate

Increased blood pressure & heart rate

CO₂ causes blood vessel dilation

High CO₂ levels can trigger high BP problems due to the vasodilating effect.

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4. Headache

Headache

High CO₂ affects blood flow to the brain

CO₂ levels highly influence cerebral blood flow, which can cause headache problems.

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5. Restlessness

Restlessness

Elevated CO₂ causes general discomfort

Disorders such as hypercarpia can happen when CO₂ levels are high.

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6. Dizziness

Dizziness

High CO₂ affects inner ear and balance

At high levels, CO₂ is known to cause dizziness, vertigo, and other symptoms.

Choose YourAir Quality MonitorTo Measure CO2 levels

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