Since I've been told I have a big leak somewhere (the contractor said the system was empty; the R-22 had leaked out apparently), the contractor is coming back to perform a dye leak test. I'd like to know any comments on the die leak test. I had a soap bubble test done and that came up with nothing except a leak at a shraeder valve. Is this going to be any better? I'm thinking there's a chance it's in the lineset. I think I've always had a leak for quite some time; perhaps it has continued getting bigger. I told him about an "electronic sniffer" test you guys had mentioned, and he didn't make much of a comment. We are using the emergency heat and will continue to until the dye is ordered and this is scheduled, but I will probably be pushed back since I have some kind of heat (understandable). Thanks in advance.