It should feel somewhat warm. Are you feeling the glass, or the pad itself? They do take some time to heat up, so if you just plugged it in, then give it a while. My Zoomed gets up to 125F if run wide open, and that's a fairly small one. I imagine you have a probe thermometer? Use that to see if it's getting up to temp. They always feel very warm to me (so do my snakes when they have been lying on the warm spot), but I have cold hands, some people have warm hands so of course they would feel less warm to them. I'm sure you know this, but I'll add it just in case: you must use a thermostat, or that the very least (and preferably on the short term) a rheostat and probe thermometer with a UTH.