This will depend on a few things, but normally they add a small charge of refrigerant with a leak detector dye, send you away for a day or so and then re check with a UV light, this shows up the dye stain, they can also try and check it on the spot if the leak appears bad, cost will be sub $50 I feel, but get a price first.
Tuesday, October 18th, 2011 AT 9:20 PM