Hidden Evaporator Leaks and the Reality of a Dash Pull Repair

Hidden evaporator leaks are difficult to diagnose because they are contained inside the dash and leave no visible residue. Standard pressure tests often fail due to temperature-dependent sealing. Reliable diagnosis requires specialized electronic sniffers to confirm the refrigerant leak is inside the HVAC case before committing to a costly dash-pull repair. Why These Leaks Stay […]