Is there a test that can find an IAQ problem?

There is no single test to find an IAQ problem. You should check measurements of temperature, humidity, and air flow. In addition, regular inspections and testing of the ventilation, heating, and air conditioning systems (to make sure it is working according to specifications for building use and occupancy) should be performed. Also, building walk-throughs should be done to check for odors and look for water damage, leaks, dirt, or pest droppings.

Sources that may lead to IAQ problems need to be eliminated. Standing water in humidifiers, air conditioning units, on roofs, and in boiler pans can become contaminated with bacteria or fungi. In some circumstances, specific testing for radon or for asbestos may be required as part of building occupancy. For instance, in schools asbestos needs to be checked every three years and re-inspected every six months under the Asbestos Hazard Emergency Response Act (AHERA).