Exo Terra Heat Mat Self Regulating PTC

The Exo Terra PTC Self-Regulating Heat Mat uses carbon fibre heating technology to deliver consistent, uniform under-tank warmth for reptiles, amphibians, and invertebrates. Available in four sizes to suit enclosures of different scales, this heat mat is designed to replicate the conductive heat of sun-warmed surfaces — a critical component of effective thermoregulation in captivity.

PTC Carbon Fibre Technology

The PTC (Positive Temperature Coefficient) carbon fibre element distributes heat evenly across the entire mat surface, eliminating the concentrated hotspots associated with conventional heat mats. This uniform conductive heating supports healthy metabolism, appetite, digestion, and general activity levels in your animals. An electrothermal conversion efficiency exceeding 95% means the heat generated closely matches the energy drawn, making the most of every watt.

Self-Regulating and Built-In Safety

The mat includes an automatic fail-safe mechanism and a self-regulating maximum temperature ceiling, meaning the element responds to its own heat output and adjusts accordingly. Warm-up is rapid, and the mat will cut off if temperatures reach unsafe levels. That said, Viperia strongly recommends pairing this mat with a suitable thermostat for accurate, consistent temperature control — self-regulation alone is not a substitute for a properly calibrated thermostat.

How and Where to Use It

The heat mat permanently adheres to the base of the terrarium, forming a solid bond that optimises heat transfer into the enclosure substrate. It works as a primary or secondary heat source and is particularly well suited to nighttime heating, where visible light sources are not appropriate. Rubber spacers are included to allow safe mounting. Always ensure cold spots remain accessible within the enclosure so animals can thermoregulate freely.

Combining Heat Sources

Conductive heat from the mat works well alongside radiant infrared heat from a basking bulb. Together, these two heat sources allow animals to fine-tune their body temperature more effectively — the mat providing background warmth from below, and a basking spot delivering directed overhead heat. The addition of UVA from a basking bulb also supports physiological wellbeing and can stimulate natural behaviours.

Choosing the Right Size

The range spans four wattage and size options, from compact mats suited to small species enclosures through to larger formats for bigger terrariums. Select the variant that covers an appropriate footprint for your setup — as a guide, the mat should heat one area of the enclosure floor, not the entire base, to preserve a meaningful thermal gradient. Check the variant options on this page for the full size and wattage breakdown.

Whether you are housing a small gecko or a larger terrestrial species, the Exo Terra PTC Heat Mat range gives keepers a reliable, low-maintenance heat source that integrates cleanly into any thermostat-controlled setup.