Are CO2‑based controls helping or hurting IAQ in tight single‑family homes?
Using CO₂ sensors for ventilation is a good idea. They keep rooms fresh and save energy. But in airtight homes, they don’t catch all pollution. They work best with other sensors to really control air quality.
CO2-based controls can be beneficial for indoor air quality (IAQ) in tight single-family homes if implemented correctly.
CO2-based controls can help determine ventilation rates and ensure adequate fresh air exchange, reducing indoor CO2 levels and maintaining good IAQ.
They can help if calibrated and paired with ventilation, but in tight homes relying solely on CO₂ sensors may miss other pollutants, risking poorer overall IAQ.
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CO₂ based controls can save energy and maintain IAQ if paired with baseline ventilation, but alone they risk under-ventilating and letting other pollutants build up in tight homes.
In tight single-family homes
CO₂-based ventilation controls can hurt IAQ if they only respond to CO₂, because pollutants like VOCs and moisture can build up long before CO₂ rises.
They help if paired with minimum fresh-air rates and/or multi-sensor systems, so ventilation never drops below what’s needed for overall air quality.
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