Thermosiphon Heaters

Hotstart's externally mounted thermosiphon engine heaters circulate heated coolant throughout the engine block. Convection heating allows coolant to naturally rise from the heater and circulate through the engine's water jacket without a pump. Hotstart thermosiphon engine heaters maintain an engine's operating temperature during downtime and offer excellent cold weather or emergency starting while eliminating needless idling.

Markets served: Power Generation, Hazardous Location, Machinery, Truck & Bus

Compact heaters that feature a built-in thermostat and multiple heat and voltage options for diesel or gas engines.

Made from pressure die-cast aluminum tanks, HOTSTART’s CB series of heaters are the compact, heavy-duty solution for heating your diesel or gas engine. Featuring a built-in high-limit thermostat,…

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CL heaters are heavy-duty thermosiphon heating solution,  providing higher wattage options for increased heat output.

HOTSTART’s CL heaters are the heavy-duty thermosiphon heating solution, providing higher wattage options for increased heat output. The CL series features the same pressure die-cast aluminum tank,…

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Hazardous location approved systems that are hard wired into the main electrical system.

HOTSTART’s EE heaters are hazardous location approved systems available in both single and three phase configurations that are hard wired into the main electrical system. The EE series features the…

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Engine block heater used for heating coolant consists of a metal tank  with power cord and thermostat enclosure attached

Made from pressure die-cast aluminum tanks, HOTSTART’s SB series of heaters are the compact, heavy-duty solution for aftermarket applications requiring heat for your diesel or gas engine. Featuring…

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Engine block heater used for heating coolant consists of a metal tank  with power cord and thermostat enclosure attached

Made from pressure die-cast aluminum tanks, HOTSTART’s SL series of heaters are the compact, heavy-duty solution for aftermarket applications requiring heat for your diesel or gas engine. The SL…

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Engine block heater used for heating coolant in diesel engines consists of plastic bell shaped tank with 120 volt power cord

HOTSTART’s TPS thermosiphon heating system is a coolant preheater, developed to maintain optimal temperatures for diesel and gas engines in stationary land power, marine, construction equipment, and…

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Engine block heater used for heating coolant consists of a metal tank  with thermostat enclosure attached but no power cord

HOTSTART’s WL heaters are the three phase option for dependable heating of original equipment manufacturers' engines. The WL series features the same pressure die-cast aluminum tank, built-in high…

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