During our visit, the customer mentioned she has been having to fill her propane tank up more recent than usual. She also mentioned the propane company checked the tank and service line for leaks. They were unable to locate any issues. I mentioned to the customer that we would have to do a pressure test on the home to validate that there are no leaks in the home. An estimate was approved for this to be completed. We first started with turning off each isolation valve for each gas appliance. I then located the gas line where it enters the home. I disconnected the under ground gas line and gas regulator so I could install an air pressure gauge. I pumped the system up with just over 10 psi for over 30 minutes. The gauge did not loose pressure the entire time. I then made sure the valve was off at the propane tank and installed an air pressure gauge on the service line. I pumped the line up with 10 psi and quickly noticed the gauge was loosing pressure. I was unable to locate any leaks a