The Carolina Reaper is the hottest pepper, followed by the Habanero and then the Scotch Bonnet. The Carolina Reaper has an average heat level of 1,569,300 Scoville Heat Units (SHU), while the Habanero has an average heat level of 100,000-350,000 SHU and the Scotch Bonnet has an average heat level of 100,000-350,000 SHU.