1995 Jeep Cherokee. I've recently replaced the battary in my car, and it was working fine until one day I was driving home and my air conditioning simply stopped. I don't know if the battary and this problem are linked...I turned off the A/C and tried to put on the heater, no air. I put on the defrost and again, no air was coming out of the vents. Now when I get into my car and try to get any sort of air through the vents, it gives a small puff and then nothing. I was wondering if anyone had any idea as to why this is.

1995 Jeep Cherokee. I've recently replaced the battary in my car, and it was working fine until one day I was driving home and my air conditioning simply stopped. I don't know if the battary and this problem are linked...I turned off the A/C and tried to put on the heater, no air. I put on the defrost and again, no air was coming out of the vents. Now when I get into my car and try to get any sort of air through the vents, it gives a small puff and then nothing. I was wondering if anyone had any idea as to why this is.

The HVAC system uses engine vacuum to operate multiple vacuum motors.
I would suspect you've lost one or more of the vacuum motors used to control the diverter valves inside the HVAC plenum. You might also have a vacuum line or lines or a central vacuum connector either leaking, disconnected or broken.

mike
00XJ

First thing... is the AC compressor turning when you turn the AC on?