Now that you mention it, it probably doesn't! I only had the car since april 4.th and always drive with the top down, but there has been a couple of days of rain with the top up, I have had to use the fans inside the cocpit and it only produced normal temperature air when positioned "cold". So I guess I just answered my own question... Thanks
So just replace it then? Looked like an easy job, when I had the bumper off...