AOL Series – Compressed Air

Thermal Transfer Products Compressed Air Aftercoolers

API Heat Transfer’s line of Thermal Transfer Products compressed air aftercoolers is a complete series of standard catalog air-to-air and water-to-air aftercoolers for compressed air and lube oil cooling. All Thermal Transfer Products aftercoolers are available with a wide variety of standard options to best suit each application.


  • In-Line shell and tube
  • Up to 5000-cfm capacity
  • Large range of standard sizes
  • Low approach temperatures
  • Copper, copper-nickel, or stainless steel tubing


  • Belt Guard or fan-cooled units
  • Up to 5000-cfm capacity
  • Large range of standard sizes
  • AC, hydraulic, or air-motor fan drives
  • Copper tube aluminum fin
  • Brazed aluminum (P-BAR)
  • Heresite coating for offshore or corrosive environment operation

Customer Focused and Driven

  • All catalog products are available with short lead-times 
  • Expert application engineers available to select and size the right product for your application 
  • Custom designs are available

For application help and quoting, visit our Full TTP site or contact

Contact Us/Request a Quote


  • Compressors
  • Industrial Markets
RatingsMaximum Operating Pressure 250 PSI
Maximum Operating Temperature 300°F
*CRN Rating 235 PSI at 250°F
MaterialsLegs - Steel with baked enamel finish
Shroud - Steel
Standard Core - Brazed Aluminum Bar and Plate
Tanks - 5052 Aluminum
Nose Bar & Little Bar - 3003-H Aluminum
Air Fin, Plate, Turbulator & End Plate - 3003-O Aluminum
Fan - Aluminum Hub, Plastic Blades
Motor - TEFC
Fluid CompatibilityPetroleum/mineral oils
Oil/water emulsion
Water/ethylene glycol

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