• COMPRESSED AIR THERMAL MANAGEMENT

Aftercooler Solutions for Reciprocating & Rotary Compressor Applications

API Heat Transfer covers a wide range of air-to-air and water-to-air aftercoolers designed to meet the needs of both reciprocating and rotary compressor applications — delivering consistent clean, dry compressed air with lower maintenance requirements and improved equipment uptime.

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Flow Capacity

50 to 4,800 SCFM (3.5–135.9 SCMM)

HP Range

5 to 700 HP (45–520 kW)

Construction

Rugged Bar-and-Plate Aluminum

OEM Support

CAD Models & Application Engineering

THE COMPRESSED AIR THERMAL MANAGEMENT CHALLENGE

In compressed air systems, high discharge temperatures introduce heat and moisture into the air stream — reducing air quality, damaging downstream equipment, and compromising process efficiency. Aftercoolers are the critical first line of defense.

High Discharge Temperatures. Moisture Contamination.
Downstream Equipment Depends on Clean, Dry Air.
Temperatures Icon
High Discharge Temperatures
Compression generates significant heat that elevates discharge air temperatures well above safe operating limits for downstream equipment. Without effective aftercooling, heat carries through the system — degrading tools, piping, dryers, and end-use processes.
Discharge temp reduction — near-ambient outlet
Moisture Icon
Moisture in the Compressed Air Stream
As compressed air cools, moisture condenses in piping, tools, and process equipment — causing corrosion, contamination, and premature component failure. Aftercoolers condense and remove moisture at the source before it reaches downstream equipment, protecting the full system.
Moisture removal — downstream protection
System Efficiency Icon
System Efficiency & Equipment Uptime
Undersized or poorly matched aftercoolers increase maintenance frequency, reduce dryer and filter performance, and shorten the service life of downstream equipment. Properly engineered aftercooler solutions deliver consistent air quality with minimal pressure drop and maximum uptime.
Low pressure drop — maximum uptime

A Complete Aftercooler Portfolio for Every Compressor Application.

API delivers both standard catalog and custom aftercooler solutions — including air-cooled, water-cooled, combination aftercooler/oil cooler units, extended surface intercoolers, and BEP-style TEMA heat exchangers — covering the full range of reciprocating and rotary compressor applications with the right technology for each duty.

Air Cooled Aftercoolers Icon Air-Cooled Aftercoolers

Rugged, high-performance bar-and-plate aluminum aftercoolers optimized for high airflow, low pressure drop, and maximum heat transfer — cooling compressed air to near-ambient conditions in a compact, installation-ready package. Standard catalog covers 50–4,800 SCFM for 5–700 HP compressors, backed by downloadable CAD models and full technical documentation.

Water Cooled Aftercoolers Icon Water-Cooled Aftercoolers & BEP-Style TEMA Exchangers

Water-cooled aftercooler configurations and BEP-style TEMA heat exchangers for compressed air packages where higher pressures, continuous operation, and dirtier conditions demand a more rugged, serviceable solution — handling aftercooling and oil cooling duties with reliability and ease of maintenance.

Combo Aftercooler Icon Combo Aftercooler / Oil Cooler Units

Combination aftercooler and oil cooler units for rotary screw compressor applications — cooling both compressed air and lubricating oil in a single integrated package. Reduces footprint, simplifies installation, and supports proper oil performance while preventing overheating.

Extended Surface Icon Extended Surface (ES) Intercoolers & Aftercoolers

ES extended surface finned-tube coolers acting as intercoolers and aftercoolers directly on the compressor — rapidly pulling heat out of the air stream, lowering discharge temperatures, and driving moisture condensation for downstream separation. Together with BEP-style TEMA exchangers, they ensure lower air temperatures, reduced moisture carryover, and improved overall air quality.

compressed air systems efficient ES Coolers + BEP TEMA Exchangers — A Complete System Approach

Extended surface (ES) coolers and BEP-style TEMA heat exchangers work together to keep compressed air systems efficient, reliable, and dry at every stage of the compression process. ES coolers handle direct-on-compressor intercooling and aftercooling — rapidly removing heat from the air stream. BEP-style TEMA exchangers manage aftercooling and oil cooling in water-cooled packages where continuous operation and serviceable design are priorities. Together, they protect dryers, filters, and end-use equipment while maximizing overall system efficiency.

A Complete Aftercooler Portfolio for Every Compressor Application

PROVEN ACROSS COMPRESSOR APPLICATIONS

Compressed air segments and applications we support.

Reciprocating Compressors

Air and water-cooled aftercoolers for reciprocating compressor applications — engineered for the pulsating flow characteristics and high discharge temperatures of piston-driven compression across industrial and process environments.

High Discharge Temp Management, Reciprocating duty rated
Reciprocating compressors

Rotary Screw Compressors

Combo aftercooler/oil cooler units designed specifically for rotary screw compressor packages — cooling both compressed air and lubricating oil in a single space-efficient module for reduced footprint and simplified installation.

Single-Package Integration, Rotary screw optimized
Rotary screw compressors

Water-Cooled Compressor Packages

BEP-style TEMA heat exchangers for water-cooled compressed air systems — handling aftercooling and oil cooling duties where higher operating pressures, continuous run conditions, and dirtier environments demand rugged, serviceable equipment.

High-Pressure, Continuous Duty, Serviceable TEMA design
Water-cooled packages

OEM Compressor Integration

Pre-engineered catalog products with downloadable CAD models, technical documentation, and application engineering support — streamlining integration into OEM compressor packages and reducing engineering lead time from specification to shipment.

CAD-Ready Standard Catalog, OEM integration ready
OEM packages

OEM Compressor Integration

Pre-engineered catalog products with downloadable CAD models, technical documentation, and application engineering support — streamlining integration into OEM compressor packages and reducing engineering lead time from specification to shipment.

CAD-Ready Standard Catalog, OEM integration ready
OEM packages

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Discuss specs, custom solutions, and integration

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Frequently Asked Questions

Common questions about Compressed Air heat transfer applications and API Heat Transfer solutions.

What heat exchanger products does API Heat Transfer supply for compressed air systems?+
API Heat Transfer supplies aftercoolers and intercoolers for industrial compressed air systems including oil-flooded rotary screw, oil-free screw, centrifugal, and reciprocating compressors. Both air-cooled and water-cooled configurations are available. Products are engineered to reduce compressed air outlet temperature, minimize moisture carryover, and protect downstream air treatment equipment.
Does API Heat Transfer supply intercoolers for multi-stage air compressors?+
Yes. API Heat Transfer’s shell and tube and plate heat exchangers are used as intercoolers between stages of multi-stage centrifugal and reciprocating air compressors. Intercooling reduces the temperature of compressed air between stages, improving compressor efficiency and reducing power consumption. Products are engineered for the pressure, temperature, and flow conditions of each compressor stage.
What are the benefits of using a plate heat exchanger as a compressed air aftercooler?+
Plate heat exchangers used as compressed air aftercoolers offer higher thermal efficiency and smaller footprint compared to shell and tube designs for the same duty, enabling compressed air to be cooled closer to inlet water temperature. This maximizes moisture dropout before the air dryer, protecting downstream equipment. API Heat Transfer’s gasketed plate designs allow plate removal for cleaning without disconnecting process piping.