"The fin comb is used to clean and straighten the fins on an air conditioning unit.This is done so that the air conditioner will be more efficient in cooling the home.One of the main causes of your air conditioner not blowing properly is because there is dirt on the fins.Here is a link for more
Read more.... information:http://www.wonderhowto.com/how-to/video/how-to-fix-your-home-s-window-air-conditioner-220142/"