Sometimes, but not always. Whether a millipede needs extra heat depends on three things: the species, the room temperature, and whether the enclosure stays stable and moist. Many millipedes do well at normal room temperatures if the habitat is set up properly, while others may benefit from gentle, controlled heat in cooler rooms.
The important point is that millipedes are not pets that should be warmed up by default. They live in the substrate, where conditions should stay stable, moist and safe. If heat is used, it should support that environment rather than create a dry or hot area in the tank.
If you are still building a habitat or checking whether your setup is suitable, start with our Millipede Enclosure & Substrate Guide and the wider Millipede Setup & Substrate Guides.
Do all millipedes need extra heat?
No. For most commonly kept millipedes, the goal is not to make the enclosure warm in the way you might for a reptile. The aim is to keep conditions stable and appropriate for the species. A room that feels comfortable to you may already be perfectly adequate. In a cooler room, especially in winter, a little added warmth may help, but only if it is controlled carefully.
Species matters. Tropical millipedes generally come from warmer, more humid environments than temperate species, so their preferred conditions are not identical. If you are keeping a specific species, always check its individual care needs rather than assuming all millipedes want the same temperature.
What millipedes need to do well
Millipedes are substrate-dwelling detritivores, so most of their life happens below the surface, where they burrow, rest, feed and moult. That means the enclosure matters more than any single piece of equipment. Deep, organic substrate, leaf litter, decaying wood and steady moisture are the core requirements.
Heat only becomes relevant once those fundamentals are already in place. If you do need to add warmth, use a controlled, gentle source and keep the heat external and localised rather than flooding the whole enclosure with warmth. The goal is usually a mild temperature lift, not a hot spot. Millipedes should still have access to cooler, moister areas so they can choose the conditions they prefer.
Good millipede care is about balancing temperature with moisture. Warmth can increase evaporation, so a heated enclosure may dry faster than expected. If you add heat, check the substrate more often and make sure the lower layers remain damp, loose and earthy rather than drying at the edges or becoming compacted.
For setup basics, see How to Set Up a Millipede Enclosure. If you want to understand how moisture and heat affect each other, read How Humid Should a Millipede Enclosure Be?. Airflow also matters, because ventilation can either help prevent stale conditions or dry the habitat too quickly. See Do Millipedes Need Ventilation?.
Everyday care
In day-to-day husbandry, the best approach is to monitor the enclosure rather than chase a target temperature blindly. A simple room thermometer is often enough to tell you whether the habitat is sitting in a sensible range. If the room stays stable and the millipedes are active, feeding and burrowing normally, there may be no need for heat at all.
A good practical routine is simple:
- check room and enclosure temperature regularly
- keep the substrate deep and slightly damp below the surface
- watch for drying at the top layer if any heat is added
- make sure the millipede can choose cooler, moister areas
- adjust gently rather than making sudden changes
It also helps to remember that millipedes often spend long periods underground. That is normal. If the enclosure is set up well, burrowing, hiding and inactivity are not necessarily signs that something is wrong. In many cases, the animal is simply doing what millipedes naturally do.
Common mistakes
The most common mistake is assuming extra heat is always beneficial. In practice, unnecessary heat can dry the substrate, stress the animal or create a poor gradient inside the enclosure. Millipedes need stable, usable habitat conditions, not just a warm tank.
Another frequent issue is placing a heat source in a way that dries one section of the enclosure while the rest stays cool and wet. That can create an uneven setup, with a dry hot zone and a damp cold zone. Millipedes may avoid both if the balance is poor. If heat is used, it should be controlled carefully and never allowed to create a drying hotspot.
Overheating is especially risky in shallow setups. Millipedes rely on substrate depth to buffer changes in temperature and moisture. A thin layer of bedding loses moisture quickly and gives the animal nowhere sensible to retreat. If your setup is shallow, the priority should be improving the enclosure first, not adding more heat.
It is also a mistake to treat all millipedes as identical. A species from a warm, humid habitat may need a different temperature range from one adapted to cooler conditions. Keepers often get into trouble by copying general advice without checking the species they actually own.
Finally, avoid using heat as a fix for poor husbandry. If the substrate is too dry, the enclosure too shallow, or the habitat too sterile, warmth will not solve those problems. Millipedes do best in a substrate-first enclosure with leaf litter, decaying wood and steady moisture.
So, do millipedes need heat?
Sometimes yes, sometimes no. The answer depends on the species, your room temperature and how well the enclosure holds moisture. Many millipedes can thrive without added heat if they are kept in a properly built habitat. Others may need a modest, carefully controlled heat boost in cooler conditions.
The safest approach is to think about the whole enclosure, not just the number on a thermometer. If the substrate is deep, the moisture stable and the habitat balanced, your millipede is far more likely to do well. Heat should support those conditions, not replace them.