Thermal Engineering International (TEi) logo

moisture separator reheater on a dock

Design Solutions for Pressure Vessels and Heat Transfer Equipment Including Replacements and Upgrades

Thermal Engineering International—TEi— has installations across the globe and is backed by more than 165 years of experience in the design and manufacture of high quality Pressure Vessels and Heat Transfer Equipment for the power generation and process industries.

TEi markets include Fossil, Nuclear, and Solar Power as well as Oil, Gas and Chemical Industry applications.  TEi offers a full range of services from Consultancy and Spares to Manufacture and Installation of new system designs, replacements and upgrade equipment.

Encompassing a number of highly respected legacy brands including Struthers Wells, Perfex, EFCO, Southwestern Engineering Company (SWECO), Senior Engineering Company, Marley and Westinghouse Feedwater Heaters, TEi has an unmatched pedigree in technology and experience in its field and prides itself in its ability to support a massive installed base of equipment.

Additionally, TEi is a proud member of the following institutions: HTRI, HEI, and TEMA.

High Quality Products for Power Generation

TEi’s innovative Power Generation product line includes a wide variety of Main Steam Condensers, Feedwater Heaters, Moisture Separator Reheaters (MSRs) and Auxiliary Heat Exchangers. From the largest condensers currently operating in the U.S. to the extensive list of supercritical feedwater heater designs to the unparalleled MSR retrofit references and the most sophisticated rotor air coolers for advanced combined cycle plants, TEi has unmatched solutions for Power Industry applications.

In the Renewable Energy Sector, particularly Solar Thermal, TEi possesses a strong reputation and reference list dating back to the 1980s and continues today to be a market leader in heat exchangers for energy storage and steam generation as Solar Thermal power continues to develop into a sustainable, economical solution for generation by day or night. These designs originated through Struthers Wells and complement our Power product line.

Further information relating to our Power and associated products are linked below for:

Heat Transfer Solutions for Oil, Gas, Chemical Industries and More

Through the Struthers Wells brand TEi also has a broad portfolio of solutions for specialty High Pressure Heat Exchangers, Process Fired Heaters and Heat Transfer Equipment targeted at the Oil, Gas and Chemical Industry as well as process applications where specialty thermal fluids and conditions are part of the heat transfer process.

The range of products also includes High Pressure Breechlock Heat Exchangers, Waste Heat Boilers and Sulphur Recovery Units and other specialized products as well as the specialized Solar Heat Exchangers that can be found on the Struthers Wells applications page.

Specialized Consulting to Drive Operating Improvements

Drawing upon TEi’s decades of diverse experience in heat transfer equipment, we also make our expertise available to select customers to help them develop strategies to bolster the efficiency, reliability and performance of their units, regardless of the unit’s age or original manufacturer. The capabilities of our Engineering Consultants include performance, cycle, failure,thermal, and structural analysis; condition assessment; conceptual system redesign; design optimization; finite element and piping flexibility analysis; solid modeling; and much more.

Need Parts?

We also manufacture high quality replacement parts for feedwater heaters, heat transfer condensers, heat exchangers, steam moisture separator reheaters, and other heat transfer equipment.

We have all your components and spare parts within reach, including parts for units built by Thermal Engineering International (TEi), Southwestern Engineering Company (SWECO), Struthers Industries, Struthers Wells, Senior Engineering Company (SECO), BDT Engineering, Berlin Operation — McQuay/Perfex, Industrial Products Milwaukee — BTA-Perfex, Engineers & Fabricators Company (EFCO), Marley Heat Transfer and Westinghouse.

Installed Locations

  • Feedwater Heater
  • Condenser
  • Moisture Separation Reheater (MSR)
  • Industrial Heat Exchanger

You’re Backed by the Substantial Resources of BPI

TEi is part of Babcock Power Inc., an international company with multiple specialized business units all working independently and together as needed to best meet customer needs. For example, we often work in conjunction with our sister company TEiC Heat Exchanger Services, which has extensive field resources across North America and delivers high quality onsite repair and installation services. Additionally, we often work in conjunction with sister company Struthers Wells in serving many process industry customers.

Contact TEi Today

Find out more about putting a proven TEi solution to work in your operation—new or replacement:


  • 323-726-0641

Aftermarket Parts

  • 323-726-0641 ext. 1153 & 1164


Start typing and press Enter to search