Like all the others have suggested, you can lower the wattage of your light bulb, or get a CHE and a dimmer switch.
How does your enclosure open? If it is top opening and your herps cannot escape, you could partially leave your cage top open to let in some ventilation.
Another option, if it is feasible is to get a small battery powered clip on fan. Just be sure that it is out of reach of your herp(s).
Maybe herpers in hot arid areas can give more advice on this..