Common Indoor Air Pollutants
Particulate Matter
| Pollutant | Source | Size | Health Effect |
|---|---|---|---|
| Dust | Skin cells, fabric fibers, soil tracked in | 1-100 microns | Respiratory irritation, allergies |
| Pollen | Enters through windows, doors, clothing | 10-100 microns | Allergic rhinitis, asthma attacks |
| Pet dander | Cats, dogs, and other animals | 0.5-10 microns | Allergies, asthma triggers |
| Dust mite waste | Bedding, upholstery, carpets | 1-10 microns | Allergies, asthma, eczema flares |
| Mold spores | Damp areas, bathrooms, basements | 2-20 microns | Respiratory infections, allergic reactions |
Gases and Volatile Organic Compounds (VOCs)
VOCs are chemicals that evaporate at room temperature and enter the air you breathe:- Formaldehyde — Released by pressed wood furniture, flooring, and building materials. A known carcinogen.
- Benzene — Found in paints, adhesives, and tobacco smoke.
- Toluene — Present in paint thinners, nail polish, and adhesives.
- Cleaning product fumes — Many household cleaners release irritating or harmful gases.
- Off-gassing — New furniture, carpets, mattresses, and electronics release VOCs for weeks or months after purchase.
Biological Contaminants
- Bacteria — Spread through coughing, sneezing, and surface contact
- Viruses — Airborne transmission is a primary route for respiratory infections
- Mold — Black mold (Stachybotrys) and other species release spores and mycotoxins
- Smoke particles — Wildfire smoke, cooking smoke, and tobacco smoke contain fine particulate matter and hundreds of chemical compounds
Who Is Most Affected?
Certain groups are more vulnerable to poor indoor air quality:- Allergy and asthma sufferers — Airborne allergens trigger symptoms that can range from mild congestion to severe asthma attacks
- Children — Breathe more air relative to body weight and have developing respiratory systems
- Older adults — May have reduced lung function and weakened immune response
- Immunocompromised individuals — Greater susceptibility to airborne infections
- Pet owners — Continuous exposure to dander, fur, and associated allergens
Sources of Indoor Air Pollution
Indoor pollutants come from everyday activities and materials:| Source | Pollutants Released |
|---|---|
| Cooking | PM2.5, nitrogen dioxide, carbon monoxide |
| Cleaning products | VOCs, ammonia, chlorine fumes |
| Furniture and flooring | Formaldehyde, VOCs (off-gassing) |
| Pets | Dander, fur, tracked-in pollen |
| Fireplaces and candles | Soot, particulate matter, carbon monoxide |
| Outdoor air infiltration | Pollen, wildfire smoke, vehicle exhaust |
| HVAC systems | Mold, dust, bacteria (if poorly maintained) |
| Personal care products | VOCs, fragrances |
Why Air Purification Matters
Improving ventilation helps, but it is not always practical. Opening windows brings in outdoor pollutants, pollen, and wildfire smoke. HVAC filters typically capture only large particles and are not designed for fine particulate or gas removal. A dedicated air purifier with HEPA 14 filtration and activated carbon addresses the full range of indoor pollutants:- HEPA 14 removes 99.9% of fine particles down to 0.1 microns, including dust, pollen, mold, pet dander, bacteria, and smoke
- Activated carbon adsorbs VOCs, odors, and chemical fumes
- UV-C sterilization neutralizes bacteria and viruses that pass through the physical filters
Simple Steps to Improve Indoor Air Quality
- Use an air purifier with medical-grade HEPA 14 filtration in rooms where you spend the most time
- Control humidity between 30-50% to discourage mold and dust mites
- Ventilate when outdoor air quality is good
- Choose low-VOC products for paints, cleaners, and furnishings
- Clean regularly to reduce dust, pet dander, and allergen buildup
- Maintain HVAC systems and replace filters on schedule
- Address moisture problems promptly to prevent mold growth
Related: Product Overview · How It Works · Room Coverage Guide