Some of the tests are actually quite reliable, but they can be difficult to read correctly without the proper experience. Additionally, these tests don't give a full picture of the issue, as they don't tell you what kind of mold is present, where it's located and if it's toxic or not.

borescope: This is a camera that can visualize suspected mold growth and other problems inside plumbing pipes and structural elements through an opening in the component. rotameter: This device measures the air flow rate, which can be helpful to determine if the home has conducive conditions for mold growth.