Fired Heaters

Proven Innovation.

Engineered Performance.

For over a century, Struthers Wells™, now a product line of Thermal Engineering International (TEi), has set the industry standard for fired heater technology. From pioneering the first all-welded carbon steel pressure vessel to developing the world’s first Once-Through Steam Generator (OTSG) for thermal enhanced oil recovery, we continue to push the boundaries of innovation and performance.

With more than 2,500 direct-fired heaters installed globally, Struthers Wells has built a reputation for delivering trusted, high-performance equipment across the refining, petrochemical, chemical, and energy industries.

Our wide range of fired heater designs ensures optimal solutions for any process requirement or site condition:

Direct-Fired Process Heaters
Refinery Heaters
Steam Superheaters
Thermal Fluid Heaters & Systems
Fired Heater Revamp & Upgrade Services
Waste Heat Recovery Units (WHRUs)
EDC Furnaces
Ketene Pyrolysis Furnaces
Once-Through Steam Generators (OTSG) for Thermal EOR

Flexible Designs for Any Configuration

Available in horizontal or vertical configurations with serpentine or helical coils, these versatile heaters are the workhorse of the industry.

Serpentine Coils: Durable and flexible; excellent for general-purpose process heating.
Helical Coils: Inherently drainable; ideal for freeze-prone applications (e.g., molten salts, liquid metals).
Horizontal Layouts: Offer simple maintenance with all service points accessible at grade level.

Ideal for larger capacities or modular field assembly, cabin heaters can be configured with:

Single or Double-Sided Firing: For uniform heat distribution
Multi-Cell Radiant Chambers: For better control of heat flux
Vertical or Horizontal Tube Arrangements: Based on process requirements

Preheated Combustion Air Systems: Plate or tubular heat exchangers recover energy from flue gases and boost system thermal efficiency—often achieving up to 90%.
Advanced Burner Systems: TEi engineers complete combustion solutions, including burner selection, fuel trains, control systems, and Burner Management Systems (BMS).

Custom Mechanical & Structural Design
Built to ASME Section I / VIII, B31.1, NFPA and API 560 Standards
Integrated Circulating Fluid System Design: Including expansion tanks, pumps, valves, and piping
Comprehensive Auxiliary Systems & Controls

Designed for Results

Every TEi fired heater is designed to meet the unique requirements of your process. Whether you’re looking to optimize performance, improve energy efficiency, reduce emissions, or revamp aging equipment, we offer end-to-end engineering and manufacturing capabilities that deliver.

From concept to commissioning, TEi delivers fired heater solutions that perform reliably – day in and day out.