Portable kerosene heaters commonly have a internal thermostat installed depending on the particular model, as of 2015. Commercial direct fired heaters are commonly available to purchase with an optional thermostat and can commonly run on diesel, as well as kerosene.
Many forced-air kerosene heaters come with a thermostat preinstalled, but aftermarket thermostats are available for some models. Some kerosene heaters do not need a thermostat and instead use electricity to deliver fan-powered forced-air. Many aftermarket thermostats can be used for units without a thermostat and to replace internal thermostats that stop working correctly, and they can often be used for kerosene and propane heaters.