Focus
Indoor CO₂ Concentration
Indoor CO₂ concentration tracks exhaled buildup in closed rooms that can dull focus and comfort. Ventilation and fresh-air breaks lower levels faster than decor plants alone.
Indoor CO₂ concentration rises in closed bedrooms and offices as people exhale—high levels correlate with stuffiness, headache, and weaker cognitive performance in chamber studies. Ventilation, cracked windows, and mechanical fresh air lower ppm faster than plants alone.
Small monitors help you see when a meeting room needs air, not another coffee.
Common questions
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What CO₂ level is concerning indoors?
Outdoor air is near 400 ppm; many people feel stuffy above roughly 1000–1500 ppm in studies. Ventilate when monitors trend high, especially before sleep in small bedrooms.
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Do houseplants lower CO₂ enough?
Not meaningfully for occupied rooms—ventilation dominates. Plants may help mood; open windows or HVAC fresh air handles CO₂.
Related terms
Put Indoor CO₂ Concentration into practice
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