So I was doing a refrigeration maintenance at one of my clients' warehouse and all of a sudden I thought I should do a comparison between 3 coil cleaners on 3 of the same exact evaporator coils… all with the same level of dirtiness. The 3 coil cleaners i'll be comparing are the Blackhawk by Nucalgon, the No Rinse Evaporator Foam also by Nucalgon and lastly the Viper by Refrigeration Technologies. Watch till the end of the video to see which coil cleaner stands on top of the rest.