Industrial Equipment Company

since 1936

Collection: Hotstart CL Engine Heaters

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, built-in high-limit thermostat, and optional flow-through thermostat as our line of CB heaters. The CL adds an all-metal mounting bracket and heat power up to 6 kW, making it ideal for heavy-duty large engine applications.

Mounted externally from the engine block and utilizing convection – the natural rising of heated fluid – thermosiphon heaters require no additional pump and can be installed on a wide range of engines without requiring a specific part to conform to the water jacket. This adaptable and effective heating system makes thermosiphon heaters the ideal option for a wide variety of engine heating applications.

Preheating diesel or gas engines ensures they are ready to start and assume full load quickly with minimal wear to critical components. Industries that rely on their engines or backup power systems to ensure day-to-day operations run smoothly, such as fleet vehicles, excavation, mining, data centers, and hospitals, depend on the benefits provided by consistent engine heating to maximize their equipment investment and eliminate downtime.

Not intended for hazardous locations.

Markets

  • Power Generation
  • Marine
  • Machinery 

Applications

  • Construction and Excavation
  • Fire Pumps
  • EV Public Transportation
  • EV Machinery
  • On-Site Power

Heating Information

Primary Heating

  • Coolant Mix

Primary Heat Power

  • 3 kW
  • 4 kW
  • 5 kW

Power Specifications

Power Sources

  • AC, Single-Phase, 50/60 Hz

Voltages

  • 120
  • 208
  • 240
  • 277
  • 380
  • 480

Power Connectors

  • Hardwired

Temperature Control

Primary Temperature Control

  • 100–120 °F (38–49 °C)

Mount Types

  • Bracket

Inlets / Outlets

Inlets

  • 1in NPT

Outlets

  • 1in NPT

Ingress Options

System Ingress

  • NEMA 4

Certifications

  • CE-compliant models available
  • UL-C / US listed