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Ozone, smoke, and allergies

Ozone, CARB, wildfire smoke, DIY air cleaners, and allergies.

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Ozone generators and ionizers

Why ozone is a health risk.

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CARB certified air cleaners, explained

California's ozone rule.

A white cylindrical air purifier below a wide two-pane window looking out on hazy hills

Air purifiers and wildfire smoke

Clean rooms and filters.

A white box fan with a pleated filter panel across its front, blades faintly behind it, unplugged, cord coiled on light oak

DIY box fan air cleaners, explained

What EPA research found.

A freshly made bed with a plain air purifier beside it

Air purifiers, allergies, and asthma

What EPA says, plainly.

Start with ozone and ionizers

Why ozone is a health risk.

Read ozone and ionizers

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