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Marlo Heat Exchangers

March 6, 2025 by

Marlo Heat Exchangers

Heat transfer solutions to cool, heat, and dehumidify air streams

Marlo heat exchanger

Our teaming agreement with Marlo Heat Transfer Solutions enables us to manufacture Marlo’s quality heat transfer, refrigeration, and air handling coils for industrial, commercial, utility, and marine markets. These custom-engineered solutions are used in various configurations to cool, heat, and dehumidify air streams for process and building comfort.

Product Overview

Combining Energy Steel’s manufacturing expertise with Marlo’s proven designs, we deliver custom-engineered heat transfer solutions resulting in superior performance for applications ranging from standard comfort heating and cooling to complex industrial processes. DRS Marlo Coils are custom-designed and are available in a wide range of special materials and thicknesses to meet the rugged demands of industrial and commercial applications. We design and manufacture a broad range of coil styles, including fluid coils, steam coils, refrigerant coils, specialty products, and shell and tube heat exchangers.

Key Benefits

  • Custom Engineered Solutions: Coils designed around your specific project requirements
  • Computational Fluid Dynamics (CFD): Advanced analysis technology to predict air and water flow patterns
  • AHRI Certification: Performance tested over a wide range of operational conditions by independent laboratories
  • Hairpin Tubes: Minimize braze joints for the highest quality and leak protection
  • Extruded Tube Holes: Create smooth surfaces that prolong coil life under constant thermal cycling
  • Heavy Gauge Casings: Provide robust support during lifting and handling
  • Staggered Tube Design: Maximizes heat transfer efficiency
  • Integrated Pitched Casing: Promotes drainage even when installed level
  • Quality Systems: Available coils conform to ASM, ARI, PED, CRN, and ISO standards

Available Options

Material Options

Fin Options:
Materials: Aluminum, Copper, 90/10 Copper/Nickel, Carbon Steel, 304 & 316 Stainless Steel
Fin Thickness: Various options from .007″ to .025″
Fin Spacing: 4 to 14 fins per inch (FPI) depending on model
Fin Styles:

  • Turbex (corrugated design for greater heat transfer)
  • Flat (smooth design for lower air side pressure drop and easier cleaning)

Tube Options:
Materials: Copper, Aluminum, Copper/Nickel, Admiralty Brass, Carbon Steel, Stainless Steel
Special Materials Available: AL6XN, Red Brass, Carpenter 20, Incoloy, Hastelloy, Monel, SMO254, Titanium
Tube Sizes: 5/8″ or 1.0″ O.D.
Tube Wall Thickness: Options from .020″ to .083″ depending on material

Casing Options:
Standard: Galvanized steel (16 to 10 gauge)
Alternative: Stainless steel (16 to 10 gauge)
Special Requirements: Custom materials available on request

Coil Configurations

Rows and Circuits:
Available rows: 1 to 16 rows
Multiple circuit options available based on row count
Custom circuits available for specific requirements

Stratomizer® Specifications:
Casing: 14-gauge galvanized or stainless steel
Bypass Baffles: 16-gauge galvanized or stainless steel
Damper Blades: Extruded anodized aluminum with integral EPDM edge seals
Shafts: “D” shaped damper shafts with stainless steel primary drive shafts
Bearings: Oil-impregnated bronze
Controls: Pneumatic or electrical proportional actuators, including direct drive options

Applications

  • HVAC Systems
  • Comfort Cooling and Heating
  • Energy Recovery
  • Process Heating and Cooling
  • High-Sediment Environments
  • Moisture Removal
  • Vapor Recovery
  • Power Plants
  • Marine Applications
  • Limited Space Installations
  • Contamination Prevention
  • Low Temperature Applications

You May Also Need

  • Bolts
  • Channel
  • Cover Plate
  • Fins
  • Gasket
  • Lifting Lugs
  • Nuts
  • Rib
  • Screws
  • Spacer
  • Tube Plate
  • Tube Sheet
  • Tubes
  • Washers

Product Type Details

Fluid Coils

Fluid heat exchangers include standard water coils (W & P Models) for chilled water, hot water, glycol, and special fluid applications. For demanding environments, we offer cleanable coils (J, X & K Models) with brass end caps for interior access, and removable box header coils (Q, Y & R Models) specifically designed for high-sediment applications like river or lake water systems.

Steam Coils

Energy Steel manufactures the complete line of Marlo steam coils, including distributing steam coils (D & H Models) with same-end supply and condensate connections, standard steam coils (S & V Models) with straight-through steam paths, and M Coils featuring inner steam tubes supplied from both ends with a single condensate header. Our steam solutions are ideal for low or high-pressure applications in various commercial and industrial settings.

Refrigerant Coils

Refrigeration solutions include direct expansion evaporator coils (E Models) and condenser coils (C Models) compatible with most refrigerants. Each coil undergoes rigorous quality control to ensure contaminant-free interior surfaces.

Specialty Products

Energy Steel manufactures Marlo’s innovative specialty products, including split core coils for limited-space installations, removable coil modules (RCM) for easy replacement in existing systems, air-tight housing coils for environmental containment, and the patented Stratomizer® dampered face and bypass coil system for reliable preheating and tempering of fresh outside air.

Shell and Tube Heat Exchangers

Shell and tube heat exchangers feature round housings designed for applications requiring higher pressures and optimized tube bundles for efficient heat transfer. These units are particularly well-suited for industrial processes and facilities with access to steam, such as power plants, hospitals, universities, and manufacturing facilities.

Marlo Heat Exchangers

Fill out the form, and one of our product experts will be in touch shortly to answer your questions, provide detailed information, and guide you through the process.

Energy Steel

Energy Steel, since 1982, offers equipment fabrication, material supply, machining, engineering, and repair services to the nuclear industry. It supports complex projects and addresses obsolete components with OEM partnerships.

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