Why introduce heat and cold to your car when you can remove a dent WITHOUT it? I would be very concerned if someone wanted to heat up and cool down my car/paint. There is always a search for that "magic pill," and in my opinion, I have to think that this is not the better cure. Experienced dent remaval guys/girls can remove dents safely without this "new" technology, since there is no need for it. PDR has been the around for 15 plus years with no problems of paint damage and or metal fatigue/warpage, and produces 100% results in capable hands. Here's another NEW idea that is hitting the market: Glue on dent removal. This type of repair has you glue a stick onto the dent and pull it out. Recommended only for factory paint and will take off paint if you're not careful. Unbelievable! Very interesting though, however not for my car or my clients.