Instruct: Classify the given Amazon review into its appropriate rating category
Query: Works great for insulating a portable air condition.

The exhaust hose on a portable air condition can get up to 115-120 degrees. This make sure that the heat goes out the duct and does not stay in the room that you are trying to cool. Plus it's a little quieter too. Worth it, especially if you have a permanent installation through the wall like I do.