Indoor Air and Health — What Scientific Studies Reveal

Most people spend over 90% of their time indoors — at home, in offices, schools, or commercial spaces. But how good is the air we breathe every day? Scientific studies reveal a concerning reality: indoor air can be up to 5 times more polluted than outdoor air.

The Invisible Particles Entering Your Bloodstream

Fine particulate matter PM2.5 — with a diameter smaller than 2.5 micrometers — is among the most dangerous pollutants in indoor air. They are produced by cooking, combustion, cleaning products, and dust. These particles are so small that they penetrate deep into the lungs, reach the alveoli, and enter the bloodstream within just 15 minutes.

Even more concerning are ultrafine particles (UFP) below 0.1 micrometers, which can even cross the protective barriers of the brain. Studies from the University of Edinburgh have found magnetite particles directly in human brain tissue.

Hidden Pollutants in Your Home

Formaldehyde — classified as a Group 1 carcinogen by the WHO — is released from new furniture, laminate flooring, adhesives, and cleaning products. In newly renovated spaces, levels can exceed 100 micrograms per cubic meter.

Volatile organic compounds (VOCs) come from paints, varnishes, flooring, and cleaners. Studies show that 75% of the highest VOC emissions come from conventional cleaning products. When VOCs interact with ozone, they create formaldehyde and ultrafine particles as secondary byproducts.

Cooking — An Underestimated Source

During cooking, PM2.5 levels can rise to 200–400 micrograms per cubic meter — while the WHO’s 24-hour guideline is only 15. This means that cooking a single meal can expose your family to particle levels up to 27 times above the recommended limit.

Children — More Vulnerable Than Adults

Children inhale 3 times more air per kilogram of body weight compared to adults. Their lungs are still developing until the age of 8. A long-term study with 2,120 children showed that restricted lung function dropped from 7.9% to 3.6% when air quality improved — direct evidence that cleaner air supports lung development.

The Solution: Mechanical Ventilation with HEPA Filtration

HEPA-13 filters remove over 99.95% of particles above 0.3 micrometers — including pollen, mold spores, allergens, bacteria, and viruses. With a single air exchange, 85% of viruses are removed. With two exchanges, removal reaches 96%. Modern ventilation systems combine HEPA filtration with heat recovery, ensuring clean air without energy loss.

Your First Step

Protecting your family starts with understanding the problem. Clean indoor air is not a luxury — it is a necessity for health. Contact us for a free consultation about the air quality in your space and discover how a smart ventilation system can transform your living environment.