Your air conditioner will always make some noise. It’s got a big job to do, after all. But there are certain sounds that indicate that it’s operating properly—the hum of the compressor, the whir of the fan—and other sounds that indicate your AC needs repairs.
If you hear anything sudden, loud, or unexpected from your air conditioner, you need to get a technician to take a look at it. Here are some of the sounds an AC unit might make, and what kind of issues could cause it to make those noises.