To answer ur question it will absolutely work with a heat lamp. However the only problem is the prob will need to be literally laying in exactly the spot you dont want to get overheated. For instance it will need to be right in the middle of the animals basking spot. Its really not recommended fpr this purpose as ur lamp will literally be turning on an off a million times a day. What are u doing raising ambient temps (because that it will work well for) or adding an actual basking spot? That it will not be as effective at. If its a certain temp basking spot ur after finding the correct distance to the spot and the correct bulb is all u need not a thermostat. If ur raising ambient temps this will work fine, if u find the lamp turning on and off too often back the lamp off the top a little of no matter what it does this lower the watts of the bulb ya know. Either way keep a digital temp guage on that side n get a cheap temp gun.