After your freezer is delivered it is said that you can plug it in right away. It has also been said that you should wait about 12 hours before plugging the freezer in so the gases and liquids can settle. I've always plugged in my new freezers and refrigerators right away. I only waited for the fridge and freezer to hit the right temperature. I've never had a problem when plugging them in right away. You can either plug the freezer in right away or wait a few hours, it's up to you! I hope this helps!