Dunham-Bush

Dunham-Bush is a long-established American brand in the heating, ventilation, air conditioning (HVAC), refrigeration, and steam specialty equipment industry. Founded in 1894 by Dunham and Bush, the company built its reputation on steam heating products, including the well-known Dunham-Bush steam trap, and later expanded into commercial and industrial refrigeration and air conditioning systems. The brand is recognized globally, with manufacturing and distribution operations in North America, Europe, the Middle East, and Asia. Dunham-Bush products are used in commercial buildings, industrial processes, and institutional facilities. The company has undergone various ownership changes over its history but remains an active brand in the HVAC and refrigeration sector. Its steam traps are widely referenced in maintenance and repair contexts, with aftermarket solutions such as Tunstall steam capsules available for repairing Dunham-Bush steam traps. The brand also produces thermostatic radiator control valves and other steam specialties. Today, Dunham-Bush operates through a network of subsidiaries and distributors, with a significant presence in markets such as Malaysia and the wider Asia-Pacific region.

Dunham-Bush was founded in 1894 by Dunham and Bush in the United States. The company initially focused on steam heating equipment, developing a reputation for quality and innovation in steam traps and heating specialties. Over the 20th century, Dunham-Bush expanded its product lines to include refrigeration and air conditioning equipment, becoming a significant player in the HVAC industry. The brand established manufacturing facilities and sales offices in various countries, including the United Kingdom, Canada, and later in Asia. In the mid-20th century, Dunham-Bush was acquired by various corporate entities, including a period under the ownership of the Signal Companies. In the 1980s and 1990s, the company underwent restructuring and ownership changes, with operations in different regions sometimes operating under separate management. Despite these changes, the Dunham-Bush brand continued to be associated with steam traps, HVAC, and refrigeration products. In the 21st century, Dunham-Bush has maintained a presence in global markets, particularly in Asia and the Middle East, with manufacturing and distribution operations. The brand's steam traps remain well-known, and aftermarket repair solutions such as Tunstall steam capsules are available for maintaining Dunham-Bush steam traps. The company's official website, dunhambush.com, serves as a portal for information on its HVAC and refrigeration equipment, as well as steam trap repair options.

• 2000

  Continued global presence in HVAC and refrigeration.

• 1980

  Ownership changes and restructuring.

• 1950

  Expansion into refrigeration and air conditioning.

• 1900

  Company establishes itself in steam heating equipment.

• 1894

  Dunham-Bush founded in the United States.

Dunham-Bush positions itself as a provider of reliable HVAC, refrigeration, and steam specialty equipment for commercial and industrial applications, with a heritage dating back to the late 19th century.

• Dunham-Bush Steam Trap

  Steam traps for steam heating systems, repairable with Tunstall steam capsules.

• HVAC Equipment

  Commercial and industrial heating, ventilation, and air conditioning systems.

• Refrigeration Equipment

  Commercial and industrial refrigeration systems.

• Thermostatic Radiator Control Valves

  Valves for controlling radiator temperature.

1. 1Dunham-Bush Steam Trap Cage Unitdunhambush.com