Radon

You can't see or smell it, but long-term exposure to this radioactive gas is the top cause of lung cancer in non-smokers.

Particulate matter (PM 2.5)

Fine particulate matter (PM2.5) reaches deep in the lungs causing short-term discomfort and long-term health risks.

Carbon Dioxide (CO2)

When it reaches high levels indoors, carbon dioxide (CO2) can cause poor sleep and trouble concentrating.

Temperature

Temperature is not just a matter of comfort, it can negatively affect sleep quality, mood, and alertness.

Airborne chemicals (VOCs)

Volatile organic compounds (VOCs) are airborne chemicals emitted by everyday items - many are harmless but some are toxic.

Air pressure

Changes in air pressure affect radon levels and, for some, they can trigger headaches, joint stiffness and pain.

Humidity

High humidity promotes mold growth and aggravates asthma symptoms, while too-dry air can lead to skin and throat irritation.