The Dryer makes a humming noise that is different from my old dryer
Because this dryer runs on a compressor, you may hear noises that are related to the compressor. You may hear a humming noise that is similar to a refrigerator or an air conditioner. This is normal, and is operating as designed.
There is also a drain line for removal of moisture, and you may hear gurgling from the pump trying to remove that moisture. This is also normal.