The thermostat is on the side(looks like a normal house thermostat). The peg board is only on the top section. I added the fan on bottom because I was getting a thermometer reading lower than the others. However I don't think it really helped. I think that thermometer was just off.Brad~ where is the thermostat? Is the ped board just on the top part where the big fan is or does it go down farther? Now i know how to build one of these.