Yeah, I don't use one on mine for now either. If anything, I've had to float a plastic tub of ice thru the feeding cover to keep my temp down which has worked really well. I don't feel buying a chiller for this size is worth it. I live in NorCal and in the valley to boot where it gets quite warm. We'll see in the winter months how this changes though. I have seen short ones for sale that will fit in the 1st chamber so that you don't have to break through the grate on the bottom.