Reptile Heating: Basking Lamps, Heat Emitters, Mats and Thermostats

A Gradient, Not One Temperature

In the wild a reptile warms up in the sun and cools down in the shade. Your enclosure should copy that: a hot basking spot at one end, a cooler area at the other, and a range in between. Your species page gives typical temperatures for each zone, for example about 105–115°F (40–46°C) on a bearded dragon's basking stone but only about 75–80°F (24–27°C) for a crested gecko. Check with your vet or a specialist keeper for your species.

Basking Lamps for Day-Active Species

A halogen or incandescent basking lamp above the enclosure gives heat and bright light together, the way the sun does. Most keepers now prefer halogen floods for basking species. Aim the lamp at a flat stone or slate so the reptile warms evenly, and keep it outside the enclosure or behind a guard so the animal can't touch it.

• Control it with a dimmer or dimming thermostat, not an on/off switch.
• Use two smaller lamps side by side for larger reptiles, so the whole body is warmed.
• Put lights on a timer for a steady day and night cycle.

Ceramic Heat Emitters and Night Heat

A ceramic heat emitter gives heat with no visible light. It's useful when a room gets cold at night or for species that don't need extra light. Because it doesn't glow, you can't see when it's running too hot, so a thermostat matters even more. Emitters get hot enough to burn: mount them in a ceramic-socket dome with a guard.

Many species are fine with a natural drop in temperature at night. Add night heat only if your room falls below the range your species page gives.

Heat Mats: Never Without a Thermostat

A heat mat warms from below. Put it under one end only, so there is always a cool retreat, and always on a thermostat with the probe where the animal lies. An unregulated mat can run hot enough to burn a reptile that is resting on it, and some reptiles don't move away from heat in time. Mats give little warmth to the air, so they work best as a supplement to overhead heat.

Measure, Don't Guess

• A digital thermometer with probes at the warm and cool ends.
• An infrared thermometer to read the basking surface itself.
• Check readings at different times of day, and compare them with the thermostat setting. Thermostats drift; stick-on dial gauges are often wrong.

Safety Checklist

• Every heat source on a thermostat or dimmer.
• Lamps and emitters out of reach, with guards and ceramic sockets.
• Cables tidy and plugged into a surge protector; never overload a socket.
• A plan for power cuts and heatwaves: know how warm your room gets and how long your reptile can cope.

Medicines, parasites and treatments: see your vet or a pet supply store with trained staff. A reptile with a red, raw or blistered patch near a heat source needs a reptile vet, not a home remedy.