Air Conditioner noise?

Can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. You can upload it here with your response. Do you have any warning lights on?

The "deep breath" sound you're hearing every 15 seconds or so when your air conditioner is running on your 2017 Jeep Grand Cherokee could be related to the normal operation of the AC system, or it could potentially indicate a problem. Here are a few possibilities:

Normal Operation: The air conditioning system in a vehicle operates by compressing and then expanding refrigerant. When the AC compressor cycles on and off, it can sometimes create a noticeable sound, especially if the ambient noise level is low. This on-and-off cycling is normal and is part of the system’s design to maintain the desired temperature. The frequency of this cycling can change with the outside temperature, humidity level, and the temperature setting inside the car.

Possible Problem - Compressor: The AC compressor could be cycling too frequently. This can happen if the refrigerant level in the system is low, causing the compressor to work harder and turn on and off more frequently. The low refrigerant level could be due to a leak in the AC system.

Possible Problem - Expansion Valve: If the expansion valve is sticking or not working properly, it could create a pressure buildup in the system that might create the sound you're hearing.

I didn't see the video, but the fact it loses air from the vents and white mist is telling us the system is low on refrigerant. The low side pressure is too low, and it causes the evaporator to ice up. Please go over this video to see how to charge the system.

https://youtu.be/4EqdrBVb0sY

This should fix the problem.

Thanks for the video. It sounds like the expansion valve maybe cycling, I would like to install a set of A/C gauges to see if the high side pressure changes when this sound occurs. When you said I added coolant did you mean refrigerant? The system may be overfilled?

No problem, I think the A/C system may be a little low on refrigerant but if you connect a gauge set, we can tell for sure. Please check out the video in the above post.

You need to see the high-side pressure, but I would give a little more to be closer to the top of the green area. Please let me know.