Cannot regulate temp due to the many permanent holes in the kettle and the rear space in the lid. It just flows air unrestricted, and it cannot be changed. Any temp control by the large vent holes is nominal. This may be OK for those who just warm up food; but, if you really want to GRILL a steak, or char a burger, you will not be able to char the surface of the meat, except where the grill marks are. If you get the grill really hot for a semblance of char, needed for a med/rare steak, the "porcelain" finish comes off. I have used this grill 4 times, and am ordering a new grill grate so I can sell this.