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Hotstart SL Engine Heaters

Hotstart SL Series engine heaters are heavy-duty thermosiphon coolant heaters designed for diesel and gas engines that require higher heat output.

With 3 kW and 4 kW options, SL heaters deliver more power than standard thermosiphon units, making them ideal for larger engines and demanding applications like standby generators, industrial equipment, data centers, and critical facilities.

Using natural coolant circulation, SL heaters require no external pump and can be installed across a wide range of engine systems.

Available in multiple voltage and temperature configurations, including models without built-in thermostats for external control.

Message us to confirm availability and lead time.

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