Cleaning for Better Indoor Air Quality
Ontario homes are tightly sealed for much of the year — heating season from October through April means windows stay closed and recirculated indoor air accumulates dust, allergens, volatile organic compounds (VOCs), and other contaminants at concentrations much higher than outdoor air. Understanding how cleaning addresses indoor air quality — and its limits — helps Ontario homeowners prioritize the right practices.
What Cleaning Addresses
- Dust and particulate matter: Dust accumulates on every horizontal surface and becomes airborne during activity. Regular cleaning removes settled dust before it recirculates. Microfiber cloths trap dust better than cotton; HEPA-filtered vacuums capture rather than recirculate fine particles
- Allergens: Dust mite waste (found in bedding, upholstery, and carpets), pet dander, and pollen tracked indoors are major allergen sources. Regular vacuuming with HEPA filtration, washing bedding in hot water weekly, and prompt cleaning of hard floors significantly reduces allergen loads
- Mould spores: Regular bathroom cleaning (particularly scrubbing grout and tile) prevents mould growth that would produce airborne spores. Removing visible mould early prevents colony growth
What Cleaning Doesn't Fully Address
VOCs from furniture, flooring, cleaning products themselves, and off-gassing building materials are not removed by cleaning — ventilation (opening windows when outdoor air quality permits), air purifiers with activated carbon filters, and material choices address these. Similarly, carbon monoxide and radon require dedicated detectors and mitigation strategies, not cleaning.
High-Impact Air Quality Cleaning Practices
- HEPA vacuum carpets and upholstery weekly in allergy households
- Change HVAC filters monthly in heating/cooling season
- Wash bedding weekly in hot water (60°C kills dust mites)
- Clean bathroom exhaust fans quarterly (blocked fans increase humidity and mould risk)
- Use fragrance-free, low-VOC cleaning products — conventional cleaning products are themselves a significant VOC source