I am using a TIF 8800 to check for gas leaks and sewer gas in sink drains. I have been finding a lot of leaks and my last 2 inspections I have detected sewer gas in some of the sinks. Does anyone know if these things have a tendency to give false positives? I have tried to confirm the gas leaks with some gas-leak detecting soapy stuff and the sink drains didn’t seem to have sewer gas once I ran water to make sure the trap was full. These are only mock inspections… I am just starting out. But I don’t want to alarm customers in the future if there is a chance I am getting false positives. It just seems like a pretty high percentage of gas leaks and potentially blocked plumbing vents, etc.
I would appreciate any input. Thanks.