Exo Terra PTC Self Regulating Heat Mat 4W 18x10cm PT2031

The ET PTC Self Regulating Heat Mat is a carbon fibre PTC heating mat designed to deliver uniform conductive heat across the vivarium floor, replicating the warmth of sun-heated substrate. Sized at 18x10cm and rated at 4W, this is a compact heat source suited to small terrariums housing reptiles, amphibians, or invertebrates where a reliable belly-heat source is needed around the clock.

PTC Carbon Fibre Heating Technology

PTC (Positive Temperature Coefficient) carbon fibre construction means the mat is inherently self-regulating — as it reaches its maximum temperature, resistance increases and heat output is automatically reduced. This built-in fail-safe mechanism eliminates concentrated hotspots and delivers consistent, even warmth across the entire mat surface, making it significantly safer than conventional resistance-wire mats. Electrothermal conversion efficiency exceeds 95%, meaning very little energy is wasted.

Thermoregulation for Reptiles, Amphibians and Invertebrates

Conductive belly heat is essential for proper thermoregulation in many species. It directly supports metabolism, appetite, digestion, and general activity levels — particularly important for species that rely on substrate warmth rather than ambient air temperature. This mat creates the warm end of a thermal gradient; always ensure a cooler area remains accessible so animals can regulate their body temperature as needed.

Primary or Secondary Heat Source

This mat functions as a 24-hour heat source and is well suited as either a primary or secondary option depending on the species being kept. It is particularly useful as a nighttime heat source when overhead lighting and basking lamps are off. For daytime setups, pairing it with an infrared-A basking lamp allows animals to benefit from both conductive and radiant heat simultaneously, supporting more complete thermoregulation.

Installation

• Permanently adheres to the terrarium base for a solid bond and optimal heat transfer
• Rubber spacers included to allow slight air gap where required
• Rated at 4W, sized 18x10cm — suitable for small enclosures

Use with a Thermostat

Although the PTC technology provides a degree of self-regulation, using this mat with a compatible thermostat is strongly recommended. A thermostat gives you precise control over surface temperature, protects your animals from overheating, and ensures consistent conditions regardless of ambient room temperature fluctuations.

A well-placed heat mat paired with a reliable thermostat is one of the most straightforward ways to maintain the stable thermal environment that reptiles, amphibians, and invertebrates need to thrive.