A/C Leak Detection
Some AC leaks can be pretty hard to find. Sniffers are just about obsolete now. Dye seems to be the way to go. However it can be hard to tell if a leak at the schrader valve is really a leak because it can be contaminated with dye from when you installed the dye in the first place. Here’s a way I’ve found to confirm that the schrader valve is truly the source of the leak.