Manometers


If both columns on the manometer are level, equaling zero, the fan is no longer in service.

non working radon manometer

Fan is Off

working radon manometer

Fan Engaged

Periodically review the systems manometer tubing to verify that the fan is creating vacuum under the slab.

The manometer is a pressure gauge measuring the inverse relationship between suction and air flow. It is not a measure of Radon concentration.