I had an HVAC tech out that said that my fan had been running in the wrong direction. I have been having problems with my A/C all summer (Sometimes blowing out warm air, Sometimes running continuously without being able to satisfy cooling conditions and having insanely high electric bills) and I'm wondering if the fan running the wrong direction for the last two months could have been the cause of this.
So what sort of damage can be done by a fan that has been running in the wrong direction for 2 months? Can if cause the things that I've described? What sort of damage can that do to the unit as a whole??