Industrial Air Coolers

Custom Design & Fabrication

Air-cooled heat exchangers, otherwise known as air chillers or aerial coolers, are available as forced draft, induced draft or natural convection. At Exchanger Industries Limited (EIL), with a full team of highly experienced air-cooled thermal and mechanical design experts on staff, our engineering department can take on your most complex heat exchanger design challenge.

From the bitter cold of the arctic to the hot deserts of the Middle East, we provide solutions and equipment to our customers worldwide that meet, and indeed exceed, our customer’s expectations for performance.

Our aerial coolers can include either box, cover plate or billet headers for a wide spectrum of services. EIL engineers design systems to API Standard 661 and winterization where required. Additionally, our industrial cooling equipment experience includes designs for marine and tropical environments.

Finally, EIL collaborates with customers to carefully balance CapEx and OpEx considerations to minimize product life cycle costs.

EIL can provide you with complete support in the design, fabrication and lifecycle of air-cooled heat exchangers. Using innovative design and our multiple global supply chain options, we can custom tailor an option suitable for your company’s needs. We also provide aftermarket services for maintenance and parts. The team at EIL is ASME U, S, R, NB certified. We meet API and relevant industry standards and can tailor our products to the detailed specifications of many major oil and gas producers.

Forced Draft Air-Cooled Heat Exchangers

In a forced draft air-cooled exchanger, the fans are located below the tube bundles and air is pushed across the tube surface. This design allows for better accessibility for maintenance and fan-blade adjustment. As a result, less structural support is required, it can have a longer mechanical life and the capital costs may be lower.

Induced draft air-cooled heat exchangers

Induced draft air-cooled exchangers have the fans located above the bundle, with the air pulled across the finned tube surface. Due to lower air velocity, this can provide a more even distribution of air. An induced draft air-cooled exchanger is less likely to recirculate exhaust air and isn’t as susceptible to sudden temperature changes. This is because only a portion of its surface is exposed to the elements.

Natural draft air-cooled heat exchangers

Natural draft air-cooled exchangers operate in the way you might think by the name. There are no fans used to either push or pull air through the tube bundle. Instead a chimney is built above the tube bundle and will create the draft needed to drive air through the tube bundle.

Specifications at a Glance


  • Header box/plug
  • Cover plate
  • Billet


  • Carbon steel
  • Low Alloy (1.25 Cr, 2 Cr, 5 Cr, 9 Cr, 13 Cr)
  • Austenitic 300 series stainless (304, 316, 317, 321, etc)
  • Duplex stainless steels
  • High alloy (600, 800, 825 series)
  • Weld overlay (300 series, high-alloy)


  • Atmospheric up to 6,000 PSIG (welding up to 3 inches thick)


  • Width – 26 feet
  • Length – 70 feet
  • Weight – 20,000 lbs to 150,000 lbs


  • T.R.I. – Category III member
  • Aspentech TEAMS, Compress
  • FE/Pipe and Nozzle/Pro
  • Customized software
  • AutoCAD, Inventor
  • FEA – ANSYS (sub-contracted)

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World Leader In Industrial Heat Transfer Technology