Used Heat Exchangers for Sale
Used heat exchangers are industrial systems designed to transfer heat between two or more fluids without direct contact. These systems are widely used in chemical processing, food production, energy, and HVAC applications where efficient temperature control is essential. Heat exchangers support processes such as heating, cooling, condensation, and evaporation across a wide range of operating conditions. Aaron Equipment offers used heat exchangers for sale in various designs, materials, and configurations to meet specific thermal performance requirements and process demands. Browse available inventory below or explore heat exchanger types to find equipment aligned with your application.
Stock No.:
54110001Used Gulf Coast Exchanger Shell & Tube Heat Exchanger | 1733 Sq. Ft. | 300 PSI | U-Tube | 2017
Used Gulf Coast Exchanger Shell & Tube Heat Exchanger | 1733 Sq. Ft. | 300 PSI | U-Tube | 2017; SA-789 U-tube construction; SA-516-70 shell construction. 300 psig shell side design pressure; Full vacuum pressure; 390 psig shell side test pressure; 500 degrees F shell side design temp.; -20 degrees F shell MDMT; 1 pass shell side. 300 psig tube side design pressure; Full vacuum pressure; 390 psig tube side test pressure; 500 degrees F tube side design temp.; -20 degrees F MDMT; 2 pass tube side. (306) U-tubes .75" OD x approx. 13'3" straight length. OAD: 35.25" D x approx. 215.5" L. SN 824114, NB #103. Built 2017.
MFR: Gulf Coast Environmental
Stock No.:
52049004Installed But Unused Southern Heat Exchanger Model 29-144-E-STC Reboiler 1,761 Sq. Ft. Carbon Steel Shell & Tube Heat Exchanger
Installed but unused Southern Heat Exchanger Model 29-144-E-STC Reboiler vertical shell and tube heat exchanger with 1,761 sq. ft. of heat transfer surface area and carbon steel construction. Carbon steel shell is rated for 413 pounds per square inch/full vacuum at -20 to 650 degrees F. Equipped with (789) carbon steel 3/4" O.D. x 12' long x 12-gauge tubes rated for 610 pounds per square inch/full vacuum at -20 to 650 degrees F. Features (2) 8" shell-side openings and side lug mounting. Shell only, no heads included. Serial #8-00022, National Board #13099, built 2008. Overall dimensions approximately 202"L x 60"W x 60"T with a weight of approximately 18,200 lbs. Possible applications include industrial reboiling, process heating, vaporization and heat transfer service with suitable process fluids compatible with carbon steel construction.
MFR: Southern Heat Exchanger
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52862017Doyle and Roth Vacuum Cooler Condenser
Used- Doyle and Roth Vertical Shell and Tube Condenser, Approximate 18 Square Feet. Carbon steel shell rated 150psi / FV external at -20 to 300 degrees F. (50) 3/4" diameter x 24" long 316L Stainless Steel tubes rated 15 psi / FV at -20 to 350 degrees F. Baffle spacing 3.5". Single pass. Side lug mounted. National Board# 20757, Serial# S1998.
MFR: Doyle & Roth
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52052015Doyle & Roth 1,824 Sq Ft. Heat Exchanger
Used- Doyle & Roth Shell & Tube Heat Exchanger, 1,824 Square Feet. (929) 304 stainless steel .75" diameter x 10' long Tubes rated 86 psi/ FV at 400 degrees F. Carbon steel Shell rated 150 psi at 150 degrees F. National Board# 15755, Serial# J-6759-4, Built 1992.
MFR: Doyle & Roth
Stock No.:
52862009Used Anhydro Vertical Falling Film Reboiler – 19.5 Sq Ft, Hastelloy Tubes
Used- Anhydro Vertical Falling Film Reboiler / Heat Exchanger, Approximate 19.5 Square Feet. Carbon steel shell rated 200psi / FV at -20 to 400 degrees F. (19) 1" diameter x 47" long Hastelloy C-276 tubes rated 15 psi internal / 200 psi external at -20 to 400 degrees F. Openings: (2) 2", (2) 1". 40,000 BTU/h. Side lug mounted. Certified by Orbit Industries, National Board# 1026, Serial# 8306-PV-3. No bottom head.
MFR: Anhydro
Stock No.:
52862010Steam Heated Falling Film Reboiler
Used- Anhydro Vertical Falling Film Reboiler / Heat Exchanger, Approximate 19.5 Square Feet. Carbon steel shell rated 200psi / FV at -20 to 400 degrees F. (19) 1" diameter x 47" long Hastelloy C-276 tubes rated 15 psi internal / 200 psi external at -20 to 400 degrees F. Openings: (2) 2", (2) 1". 40,000 BTU/h. Side lug mounted. Certified by Orbit Industries, National Board# 1027, Serial# 8306-PV-4. No bottom head.
MFR: Anhydro
Stock No.:
52862016Doyle and Roth Vertical Shell and Tube Condenser
Used- Doyle and Roth Vertical Shell and Tube Condenser, Approximate 19.6 Square Feet. Carbon steel shell rated 150psi / FV external at -20 to 400 degrees F. (55) 3/4" Diameter x 24" long Hastelloy C-276 tubes rated 15psi / FV at -20 to 450 degrees F. Approximate 12,733 BTU/h.Single pass. 3.875" Baffle spacing. Side lug mounted. National Board# 20736, serial# S1993-2.
MFR: Doyle & Roth
Stock No.:
54110002Used Doyle & Roth Shell & Tube Heat Exchanger | 1963 Sq. Ft. | Alloy 400 Tubes | 300 PSI | 2006/2018
Used Doyle & Roth Shell & Tube Heat Exchanger | 1963 Sq. Ft. | Alloy 400 Tubes | 300 PSI | 2006/2018. Monel/Alloy 400 tube side construction. Full vac/300 psig shell side design pressure; 390 psig shell side test pressure; 650/15 degrees F shell side max./min. design temp.; 1 pass shell side. Full vac/250 psig tube side design pressure; 325 psig tube side test pressure; 650/15 degrees F tube side max./min. design temp.; 3 pass shell side. OAD: 32" D x approx. 248" L. (300) 1.25" D x 240" L tubes. Built 2006, Repaired by Ohmstede in 2018. NB #20179. Original SN S-1443-4, new SN 824114.
MFR: Doyle & Roth
Stock No.:
52862011Used Doyle and Roth Vertical Shell & Tube Heat Exchanger – 20.2 Sq Ft
Used- Doyle and Roth Vertical Shell and Tube Heat Exchanger, Approximate 20.2 Square Feet. Carbon steel shell rated 150 psi / FV at -20 to 200 degrees F. (27) .75" diameter x 48" long Hastelloy C-276 tubes rated 15 psi / FV at -20 to 300 degrees F. Openings: (1) 4", (2) 1", (3) .75". 40,025 BTU/H. Single pass. Baffle spacing 4.125". Side lug mounted. National Board# 20734, Serial# S1989-4, 2008. No bottom head.
MFR: Doyle & Roth
Stock No.:
52862012Doyle and Roth Vertical Shell and Tube Heat Exchanger. Used.
Used- Doyle and Roth Approximate 20.2 Square Feet Vertical Shell and Tube Heat Exchanger. Carbon steel shell rated 150 psi / FV at -20 to 200 degrees F. (27) .75" diameter x 48" long Hastelloy C-276 tubes rated 15 psi / FV at -20 to 300 degrees F. Openings: (1) 4", (2) 1", (3) .75". 40,025 BTU/H. Single pass. Baffle spacing 4.125". Side lug mounted. National Board# 20733, Serial# S1989-3, 2008. No bottom head.
MFR: Doyle & Roth
Stock No.:
52862013Doyle and Roth Shell & Tube Exchanger – 20.2 Sq Ft, Side Lug Mount
Used- Doyle and Roth Shell and Tube Vertical Heat Exchanger, Approximate 20.2 Square Feet. Carbon steel shell rated 150 psi / FV at -20 to 200 degrees F. (27) .75" diameter x 48" long Hastelloy C-276 tubes rated 15 psi / FV at -20 to 300 degrees F. Openings: (1) 4", (2) 1", (3) .75". 40,025 BTU/H. Single pass. Baffle spacing 4.125". Side lug mounted. National Board# 20732, Serial# S1989-2, 2008. No bottom head.
MFR: Doyle & Roth
Stock No.:
52862014Cataract Steel Industries Shell and Tube Heat Exchanger
Used- Cataract Steel Industries Shell and Tube Heat Exchanger, Model SG-33006-SETT, Approximate 21.2 Square Feet. Carbon steel shell rated 60 psi at -20 to 300 degrees F. (27) 3/4" diameter x 48" long 316L Stainless steel tubes rated 100 psi at -20 to 300 degrees F. Openings: (2) 6", (2) 2", (2) 3/4". Side lug mounted. National Board# 4639, Serial# 33006, built 2013. No top or bottom heads, Flange cut on one side.
Types of Used Heat Exchangers Available
Aaron Equipment offers a range of used heat exchangers designed to support heat transfer, process cooling, and thermal management applications:
Shell & Tube Stainless Steel Heat Exchangers – Versatile exchangers with tube bundles enclosed in a shell, ideal for high-pressure and high-temperature applications.
Shell & Tube Carbon Steel Heat Exchangers – Durable exchangers suited for non-corrosive fluids and heavy-duty industrial heat transfer applications.
Plate Type Heat Exchangers – Compact exchangers with stacked plates that provide efficient heat transfer in a small footprint.
Air Cooled / Fin Fan Heat Exchangers – Systems that use ambient air and finned tubes to dissipate heat without requiring water cooling.
Scraped Surface Heat Exchangers – Specialized exchangers designed for viscous, sticky, or fouling materials requiring continuous surface cleaning.
Spiral Heat Exchangers – Compact units with spiral flow paths that enhance heat transfer efficiency and reduce fouling.
Heat Exchanger Applications & Industry Uses
Used heat exchangers are essential across industries where controlled heating or cooling is required for process efficiency and product quality. Common applications include:
Chemical Processing: Heating and cooling of process streams and reaction control
Food & Beverage: Pasteurization, cooking, and cooling of liquid products
Energy & Utilities: Heat recovery, steam condensation, and power generation support
Pharmaceutical Manufacturing: Temperature control for sensitive formulations
HVAC Systems: Facility heating, cooling, and air handling
These systems play a critical role in improving energy efficiency, reducing operating costs, and maintaining process stability.
Used Heat Exchanger Buying Considerations
When selecting a used heat exchanger, it is important to evaluate both process requirements and equipment condition:
Condition & Maintenance History: Review refractory lining, heating elements, and prior use
Heat Transfer Requirements: Evaluate temperature differences and thermal duty
Fluid Compatibility: Ensure materials match corrosiveness and cleanliness requirements
Pressure & Temperature Ratings: Confirm suitability for operating conditions
Design Type: Shell & tube, plate, or air-cooled based on application
Fouling & Maintenance Needs: Consider ease of cleaning and maintenance
Condition & Service History: Review wear, scaling, and prior usage
Why Buy Used Heat Exchangers
Buying used heat exchangers provides a cost-effective solution for improving or expanding thermal systems without the long lead times of new equipment. Used units offer proven performance and are often available for immediate shipment, helping facilities maintain uptime and reduce capital investment.
Aaron Equipment sources high-quality heat exchangers from leading manufacturers, providing reliable solutions for a wide range of industrial applications.
Sell Your Used Heat Exchangers
Aaron Equipment actively purchases surplus heat exchangers, including shell & tube, plate, and air-cooled systems. Whether upgrading equipment or decommissioning assets, our team can help maximize value.
A heat exchanger is a system that transfers heat between two fluids without mixing them. It is used to heat or cool process streams in industrial applications.
Common types include shell and tube, plate, air-cooled, scraped surface, and spiral heat exchangers. Each type is designed for specific heat transfer requirements and applications.
Choosing the right heat exchanger depends on temperature requirements, fluid properties, pressure conditions, and required heat transfer efficiency.
Yes. Used heat exchangers are built for long service life and can remain highly reliable when properly maintained, cleaned, and inspected.
Heat exchangers are used in chemical processing, food production, energy, pharmaceuticals, and HVAC systems where temperature control is critical.