Had the exact same thing happen over the Summer. Heard a hissing sound coming from the front, then a little while later there was no cold air. They said condenser issue, fixed it under warranty. Here is the kicker, coming home the other day on a fairly cold Michigan day, the heat went out. First, it was totally out, then it was only the passenger and back seats out. Its is currently in the dealer getting looked at again. Been a HVAC nightmare so far with this car.