Indoor Air Quality (IAQ) is a big deal, especially since we spend around 90% of our time indoors. Here’s a clear breakdown of what it is, why it matters, and what affects it:
🌬️ What Is Indoor Air Quality (IAQ)?
Indoor Air Quality refers to the cleanliness, healthiness, and comfort of the air inside a building — whether it’s a home, office, or commercial space. Good IAQ means the air is:
- Free of pollutants
- Well-ventilated
- At a comfortable temperature and humidity
🚨 Why It Matters
Poor IAQ can lead to:
- Health problems: headaches, allergies, asthma, fatigue, respiratory issues
- Worsening of chronic conditions (like COPD)
- Mold growth, which can be toxic and damaging
- Decreased productivity or focus (in schools/workplaces)
- Long-term exposure may even lead to serious illnesses
🧪 What Affects IAQ?
Here are the major contributors:
1. Pollutants
- Biological: mold, bacteria, dust mites, pet dander, pollen
- Chemical: cleaning products, paint fumes (VOCs), pesticides, off-gassing from furniture or carpets
- Combustion: tobacco smoke, gas stoves, fireplaces, candles
2. Ventilation
- Lack of fresh outdoor air = stale, polluted air buildup
- Poor airflow traps moisture, allergens, and toxins indoors
3. Humidity Levels
- High humidity = mold and dust mites thrive
- Low humidity = dry skin, irritated sinuses, and more airborne particles
4. Temperature
- Extreme temps can worsen perception of air quality and affect comfort/stress levels
✅ How to Improve Indoor Air Quality
Ventilation
- Open windows when weather allows
- Use exhaust fans (bathrooms, kitchens)
- Consider an HRV or ERV system for mechanical fresh air exchange
Air Filtration
- Use high-quality HVAC filters (MERV 8–13 for most homes)
- Consider HEPA filters or standalone air purifiers
Control Humidity
- Use humidifiers/dehumidifiers to keep indoor levels around 30–50%
Reduce Pollutants
- Vacuum regularly with a HEPA-filter vacuum
- Limit use of harsh chemicals
- Don’t smoke indoors
- Fix water leaks quickly to avoid mold
Routine Maintenance
- Clean ducts, vents, and filters
- Service HVAC systems regularly