Today I arrived on site to verify the AmeriStar AHU in the basement and the Trane condenser unit in the right side of the house to trace the dye leaks. Initial Assessment: Investigated a reported dye leak in the 1st floor AC system. Leak Inspection: Located possible dye leaks within the Evap coil. Note: The leak confirmation was not definitive. When I arrived at the property, the client gave me access to the one where the AHU is installed in the engine room. I proceeded to verify the AHU Evap coil for visible dye leaks. Apparently some samples possibly of Dye appear but they are a little confusing. It is necessary to let the system operate for a longer period of time to recheck the dye leak. I didn't ensure that the small dye samples are 100% visible.. I suggest that the operating system be given more time to return at another time to identify that the leak is present in the Evap coil or in some other part of the system. I proceeded to inspect the condenser unit coil. I didn'