How to Improve Indoor Air Quality Before Winter
November 3rd, 2025
How to Improve Indoor Air Quality Before Winter
As the days get shorter and temperatures drop, we naturally spend more time indoors. But did you know that indoor air can be up to five times more polluted than outdoor air? November is the perfect time to improve your home’s air quality and prepare it for the colder months ahead.
Why Does Indoor Air Quality Worsen in Winter?
During winter, we close our windows to keep the heat inside. Unfortunately, that also traps household pollutants : dust, allergens, mold, cleaning product residues, and cooking fumes. These can cause respiratory discomfort, allergies, and even headaches.
- Clean or Replace Filters Regularly
Filters in your heating system, heat pump, or air purifier are essential for good air quality. Clean or replace them monthly to prevent the spread of harmful particles and keep your equipment running efficiently.
- Have Your Air Ducts Inspected
Dirty air ducts restrict airflow and can spread allergens throughout your home. An inspection in November ensures your system is clean, efficient, and ready for the cold months.
- Air Out Your Home Regularly
Even in winter, just a few minutes of ventilation each day can refresh your indoor air and reduce humidity. Open your windows for 5–10 minutes in the morning to keep your home feeling fresh and healthy.
- Use an Air Purifier or Air-Cleansing Plants
Modern air purifiers can capture up to 99% of fine particles, while certain plants, such as ivy, Boston fern, and peace lily, naturally absorb pollutants. Place a few in your most-used rooms for cleaner air.
- Monitor Your Home’s Humidity
An indoor humidity level between 35% and 50% is ideal to prevent dryness and mold growth. If your air is too humid, use a dehumidifier; if it’s too dry, an air humidifier can make a big difference.
In conclusion, improving indoor air quality before winter isn’t just about comfort, it’s about protecting your health. Regular maintenance and simple habits can make all the difference in helping you and your family breathe easier all season long.
