Hi, I buy my car on that dealer 3 months ago, but the a/c is not working, do I have to take my car at your place, am I going to pay for?Thank you.

Take your car to them to take a look at it. But, you'll need to contact them directly to determine if under warranty if it's a used vehicle

If it's a used vehicle did you get a warranty with it? If not you might have to pay for it. If it was a new car you should have a warranty on it. That automatically there.

If it has only been 3 months, it is most likely covered (based on my personal experiences which may differ). However, you should call them to schedule a service appointment and have them check it out. They will able to let you know whats wrong and how much it would be to fix it. The service advisors are all very polite and helpful!

Take it back to dealer let them check it out and/or repair