Air quality testing

How it works

A calibrated pump pulls a measured volume of air through a cassette for a set number of minutes. We always run one outside first as the control. Indoors, each room gets its own cassette. The lab counts and identifies the spores on each one; the report compares every room to the outdoor baseline.

A room that reads higher than outside, or shows types that are not in the outdoor air, has a source. The moisture readings and photos from the inspection usually say where.

When to ask for it

• A musty smell with nothing visible.
• Allergy or asthma symptoms that ease when you leave the house.
• After a leak or flood that has been dried, to confirm nothing is growing behind the wall.
• Before buying, or before signing a lease, when the seller or landlord says it is fine.
• After a remediation, as the clearance test that proves the job is done.

Pricing

Air sampling is part of the base mold test ($400 for two samples). Each additional room is $75. Results in 48 hours; next business day for $100.