American Fresh Air

Most of what's in your air, you put there yourself.

Five questions. About thirty seconds. No email required.

Which of these are in your home?

Tap all that apply. There are no wrong answers.

How tight is your house?

A rough sense is fine.

How often does the furnace filter get changed?

Whatever's true.

What's in your air

Caught by an ordinary filter

A standard pleated filter handles these.

    Needs treating

    These settle into the filter media and stay there.

      Needs activated carbon

      These are vapors, not particles. They pass straight through any filter that has no carbon in it.

        The EPA reports indoor VOC levels run consistently higher than outdoors — up to about ten times higher. EPA: Volatile Organic Compounds' Impact on Indoor Air Quality

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        This is a map of what's in your air, not a measurement of it. Nothing short of a lab test can give you a number, and anyone who offers you one online is guessing. The items marked "common to most homes" are ones we added, not ones you told us about.