Home Air Quality Risk Score

Yes, full basement

Highest radon risk — test immediately

Yes, crawl space

Significant radon and moisture risk

No — slab or raised foundation

Lower radon risk but still worth testing

Chronic headaches or fatigue

Linked to CO, VOCs, and poor ventilation

Respiratory issues or allergies

Linked to mold, dust mites, and pet dander

Eye, nose, or throat irritation

Linked to formaldehyde and VOCs

No symptoms that I know of

Many hazards have no immediate symptoms

Yes, gas stove with no range hood

Critical — install ventilation immediately

Yes, but I use a range hood

Better — but still at risk

No — electric or induction

Lower combustion risk

Yes — water damage and musty smells

Mold is almost certainly present

Musty smell but no visible damage

Hidden mold behind walls or under flooring

Water damage but it was dried quickly

Test anyway — mold can grow in 24 hours

No water damage or musty smells

Good — but test humidity levels

Yes — young children (under 12)

Highest vulnerability — act with urgency

Yes — elderly family members

Increased vulnerability to respiratory hazards

No — only adults

Still at risk but lower vulnerability