News » CO2 levels

The first cool evening of fall often changes a home in small, familiar ways. Windows stay closed a little longer. Dinner moves back indoors. Heating systems begin running again. Candles, fireplaces and seasonal cleaning return to the routine. The house may feel warmer and more comfortable. But the air inside is also responding to a new combination of occupancy, ventilation, outdoor conditions and indoor...

Indoor air quality goes beyond PM2.5. CO₂ and temperature-humidity balance are critical yet often overlooked. Elevated CO₂ signals poor ventilation, reducing cognitive performance by up to 50%. Meanwhile, temperature and humidity directly affect comfort, immunity, and pollutant behavior. This article reviews scientific findings and provides actionable guidance for homes, offices, and classrooms—helping you maintain CO₂ under 1000 ppm, keep temperature around 22°C, and humidity...