The cost of air quality testing in the United States typically ranges from $100 to $500 per sample, depending on the type of test, the complexity of the inspection, and the provider. For basic indoor air quality (IAQ) assessments, such as carbon monoxide or formaldehyde screening, prices often fall between $100 and $200. More specialized tests, like mold spore analysis or asbestos sampling, usually cost $300 to $500. Service fees for sample collection, lab analysis, and report preparation are also included in these estimates.

The variation in cost stems from multiple factors. First, the type of testing required significantly impacts pricing. IAQ tests for common pollutants like VOCs or radon are less intricate and thus cheaper, while mold or asbestos inspections demand specialized equipment, trained technicians, and laboratory processing, driving up expenses. For example, mold testing requires air sampling and culturing, which takes longer and costs more than a simple carbon monoxide check. Second, geographic location influences prices due to regional demand and regulatory requirements. Urban areas with higher pollution levels or stricter building codes may charge 10–20% more than rural regions. A 2022 report by the National Environmental Health Association (NEHA) found that mold testing in major cities averaged $450 per sample, compared to $350 in suburban areas. Third, the reputation of the testing company and certification of technicians also affects costs. Certified professionals with credentials from the American Industrial Hygienists Association (AIHA) or National Environmental Balancing Association (NEBA) often charge premium rates. Additionally, additional services like remediation recommendations or follow-up testing can increase the total expense. According to the Environmental Protection Agency (EPA), the average cost for a full IAQ assessment, including multiple samples and a comprehensive report, is approximately $400–$600. These factors collectively explain the cost spectrum, ensuring homeowners and businesses budget accurately for necessary air quality evaluations.