It is a 2009 Polaris Ranger 700 XP, and still under warranty. It is has around 56 hours on it. It has always put out a lot of heat. It feels like the fan kicks in and blows all the heat on your feet. I have not got to enjoy this machine, because it this. One relply said to put the thermostat in boiling water to open it up, I hope that will help. Thanks for your input.