Engineered-to-Order Box Furnaces

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prodSingleMainImgPlchldr Box furnace engine

Engineered-to-Order Box Furnaces

Box furnace engine
direct fired batch furnace

If you are looking for a custom box furnace, contact Surface Combustion today. Surface® furnaces have a worldwide reputation for providing greater value through an unmatched combination of reliability, repeatability and rugged performance. We will help you determine the optimum solution for your process, product and material from our pre-engineered or custom designs.

Engineered-to-Order Box Furnaces - Product Description

Surface engineered box furnaces are built to your specifications. Our customers rely on us to provide them with reliable, repeatable and rugged systems and equipment to improve the performance and competitiveness of their products. With over 250,000 thermal systems installed worldwide, Surface will partner with you to determine whether a pre-engineered or custom design is best to meet your process, product and material requirements. We have designed furnaces with load ratings exceeding 1,000,000 pounds.

Surface has a well-known reputation for providing solutions that are rugged and built to last. Our furnaces have proven to be extremely reliable due to our robust design practices. We love to hear stories about how furnaces we built over half a century ago are still producing quality work. A big part of that is how we design our casings with heavy plate that is supported by large sectioned structural shapes. Steel plate roofs assist in saving energy and provides access to roof mounted components. Furnace casings are welded gas tight or are properly gasketed to prevent atmosphere contamination and excess heat loss. Surface understands how casings grow and shrink during the furnace cycles and engineers the right thermal expansion joints into our designs.

Surface will work with you to choose from the latest technology in heating, energy efficiency and controls. Surface understands the difference between convection and radiation heat transfer. For low temperature furnaces, Surface designs the furnace chamber to allow high wind flow from the heat source through the work area using our proprietary high capacity, high temperature alloy fans. For high temperature applications, we engineer the furnace chamber geometry to provide rapid and uniform radiation heat transfer to the workload. When an all-in-one solution is needed, Surface has provided furnaces that operate uniformly at any temperature between 300°F and 2200°F.  Recuperation, providing added efficiency (up to 29% in some cases), is standard on all gas-fired high temperature furnaces.

Surface box furnaces can be direct-fired with high velocity burners if the products of combustion provide a suitable atmosphere for the product. Surface provides direct-fired solutions that have high convective flow to provide fast heating and uniform soak temperatures.

For atmosphere processing, Surface is your best partner. Surface has long been known for its expertise in atmosphere processing. Whether the furnace uses RX® endothermic gas, DX® exothermic gas, nitrogen, nitrogen/methanol, nitrogen/hydrogen or any other process gas mixture, Surface has the experience and expertise to provide an effective solution. Surface atmosphere box furnaces can be heated by gas-fired radiant tubes or electric resistance heating elements. Surface provides many different varieties of radiant tubes and heating elements, including our patented TridentTM and ProlectricTM designs. Our proprietary high temperature fans efficiently distribute the furnace atmosphere through the load for consistent results.

Surface has a trusted reputation for providing box furnaces for incineration, pyrolysis, pyrometallurgy, torrefaction, and thermal destruction of toxic materials. For more information, contact us.

All Surface Combustion batch furnace designs allow for flexibly tailoring each portion of the heat treat cycle: purging, heating, soaking and cooling. Surface batch furnaces are designed to be used for multiple different cycle recipes, allowing one furnace to flexibly perform a diverse range of materials, products and processes.

Our vertically lifted doors allow front loading and uses Surface’s proprietary heat and atmosphere tight door design. The furnace may be loaded with simply a fork truck or an advanced automated charging system. Multiple furnace hearth designs are available to support light or heavy workloads and enable automation.

Surface box furnaces can be designed to stand alone or be part of a new or existing furnace line. Surface provides a wide range of companion equipment, advanced controls and support services for single source responsibility. This allows you piece of mind that your installation will run smoothly, and your equipment will be taken care of for the long term.

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Aerospace Components




Cast and Ductile Iron









Hand Tools

Long Products

OCTG Products



Powdered Metal

Rock Bits

Rod & Bar

Rod Coil


Sheet Coils


Stainless Steels



Tool Steels



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Washers and Dunk Tanks

Loading Cars

Load/Unload Tables

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Ready to Get Started?

Please call us when you are ready to discuss a new furnace or maintain, upgrade or replace your furnace or any part of your furnace. At Surface, we look forward to helping you with any thermal processing needs.

Call Surface with the following information ready to initiate your furnace solution.

  • furnace cyclecycle
  • furnace operationoperation
  • hours per yearhours per year
  • available spaceavailable space
  • operating temperature rangeoperating temperature range
  • heat sourceheat source

Give Us a Call

(800) 537-8980