When the temperature drops, we naturally spend more time indoors with windows shut tight to keep warm. But while this makes our homes more comfortable, it also has a hidden downside: indoor air pollution.
According to a study on seasonal variations in indoor concentrations of air pollutants in residential buildings, average indoor pollutant levels were significantly higher during winter. PM10 levels rose to 119.4 ± 30.9 μg/m³ in winter compared to 98.8 ± 21.8 μg/m³ in summer, while PM2.5 reached 85.2 ± 25.8 μg/m³ in winter versus 67.8 ± 14.9 μg/m³ in summer.
Similarly, carbon monoxide and carbon dioxide concentrations were higher in winter months due to reduced air exchange and increased use of combustion-based heating.
Common winter pollution culprits
- Sealed homes: Closed windows and doors reduce airflow, trapping pollutants inside.
- Heating: Wood heaters and gas appliances emit particulates and gases like CO and NO2.
- Indoor activities: More cooking, use of candles, and general occupancy all increase particle load.
- Humidity: Lower ventilation can lead to condensation and mould growth, worsening air quality.
SHOCKING STUDY: Scented products pollute your home like car exhausts?
What you can do to breathe easier this winter
- Use an air purifier: A high-quality air purifier like the Ionmax+ AIRE X or Ionmax Breeze Plus can remove PM2.5, allergens, and odours.
- Monitor your air: Devices like the Ionmax Q10 Air Quality Monitor helps track PM levels, temperature, and humidity in real time.
- Ventilate when possible: Briefly opening windows during the day can help reduce indoor pollution.
- Avoid unflued heaters: Opt for safer heating methods that don’t emit indoor pollutants like the Ionmax Ray far infrared heater.
- Control moisture: Use a dehumidifier to prevent mould buildup and reduce airborne allergens.
The air may be invisible, but the risk isn’t
Winter air pollution is a silent issue that many Australians overlook. By understanding the causes and taking proactive steps, you can ensure your home remains a safe, healthy environment for your family all year round.
Explore Ionmax's full range of air treatment appliances here.
