SNT Energy designs and manufactures heat-exchange equipment for energy and process plants, including air-cooled heat exchangers, heat recovery steam generators (HRSG), surface condensers, and selective catalytic reduction (SCR) systems.
Its core product, the air cooler, cools process fluids at refining and petrochemical plants using air instead of water, making it especially valuable in the Middle East where industrial water supply is constrained.
The company holds the number-one position in the global air cooler market and has a track record dating back to 1990, when it became the first in Korea to localize high-frequency fin-tube production, a core HRSG component.
In 2022 it acquired domestic competitor KHE to expand production capacity, consolidating its position as Korea's only comprehensive air cooler supplier.
Its second pillar, HRSG, recovers waste heat from gas turbine exhaust at combined-cycle, cogeneration, and nuclear power plants to generate steam, and it recently formed a joint consortium with Doosan Enerbility to participate in a large domestic LNG combined-cycle project.
Daishin Securities noted in a March 2026 report that, based on 2025 revenue, air coolers accounted for 81.4%, HRSG for 16.6%, and other products such as SCR for 2%.
The customer base is diversified across Saudi Aramco and ADNOC in the Middle East, global oil majors such as Chevron and ExxonMobil in the United States, and domestic clients including SK Ecoplant, GS Caltex, GS E&C, and state-run power generators such as Korea Southern Power, Korea Western Power, Korea East-West Power, and SK Innovation E&S.
In the competitive landscape, BHI has held the number-one global position in HRSG for two consecutive years, so SNT Energy is pursuing a strategy of extending its air cooler dominance into HRSG.
More recently, the company has moved to secure a North American production base by building an integrated local manufacturing facility in Louisiana through SNT Global, a joint venture with SNT Motiv.