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Custom Engineered Exchanger Mode Heating 

Custom Engineered Exchanger Mode heating. Take advantage of your central heat source to provide precise indirect temperature control where you need it.

EMO Series Custom Engineered Exchanger Mode Heated Hot Oil Systems offer Safe Reliable Performance in an industrial-grade system that takes advantage of your facility’s central heat source to precisely control temperatures in a specific secondary closed loop of your process using indirect heat exchange. 

For use with available plant steam or an existing hot oil central heating source, the EMO Series system provides precise indirect temperature control with maximum operating temperatures up to 650°F. Capable of using up to 600 Volt, 3-Phase, 50/60Hz power and heating capacities up to 10MM Btu/hr. If plant steam or an existing central heating source is not available, combine with one of HEAT’s SL Series hot oil systems to provide the necessary heating capacity.  

Our engineering team will work with you to design a system based on your unique process or application. EMO Series systems typically include a Circulating Pump, Heating Circuit, Cooling Circuit, Expansion Tank, and Control Panel. These units are constructed with all-welded Carbon Steel or Stainless-Steel wetted materials, are insulated with Non-Wicking Cellular Glass Insulation, and assembled on a drip-proof, seal-welded plate-and-channel fluid containment base. 

HEAT offers four distinct levels of customization, ranging from minimal customization to fully built-to-specification designs. Each unique system undergoes a Factory Acceptance Test in accordance with HEAT standard practice prior to shipment. 

Why Custom Design?


  • Maximum Operating Temperatures up to 650°F
  • Steam or Thermal Fluid Heating
  • Heating Capacities Up to 10MM Btu/hr.
  • Up to 600 VAC, 3-Phase, 50/60Hz Power Capabilities
  • General Purpose and Hazardous Area Designs
  • Designs Temperatures of 300°F, 450°F, 550°F, and 650°F 
  • 4 Levels of Customization
  • Indoor/Outdoor Installation
  • Heat Only & Heat/Cool Designs Available
  • Uses Existing Plant Steam or a Central Hot Oil Loop as a Heat Source
  • Fluid Maintenance & Sampling Ports
  • Seller Standard or Custom Paint Colors 
  • Centrifugal and positive displacement (PD) options
  • Mechanical and Seal-less designs
  • Air- and water-cooled pump designs
  • Single and dual pump configurations 
  • Shell & Tube or Welded Plate exchangers available
  • TEMA / ASME exchanger designs available
  • Heat Input controlled by Proportional Control Valves
  • Condensate pump removal modules available for steam heating 
  • Integral and modular designs
  • TEMA / ASME exchanger designs available
  • Air-to-Oil and Water-to-Oil cooling options available
  • Proportional and on/off control  
  • Top mounted and remote mounted designs
  • Single and double expansion line designs
  • Non-pressurized and pressurized configurations 
  • ASME U/UM designs available 
  • Welded and flanged construction
  • Carbon steel and stainless steel available
  • ASME B31 Piping Materials 
  • Skid mounted and remote mounted control panels
  • Digital PID Temperature Control or Remote Operation Control
  • Configurations for external control from PLC, DCS or other external control 
  • NEMA 4, NEMA 4X, NEMA 12, NEMA 7, Class I, Division I and Class I, Division 2 
  • NFPA 87, NFP70, NFPA 79, NEC, UL, cUL, CSA 

Heat Systems: Safe by Design

Learn more about our Standard Design Practices for Custom-Engineered Hot Oil Systems
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