Our Favorite Low-Maintenance Industrial Heaters for Remote Applications

Certain applications, like oil and gas processing, hydrocracking, and pasteurization, require precise, uniform heating. The challenge? Many of these applications are run in remote settings with minimal to no on-site technical support to fix potential upsets, and even the smallest temperature variations can have devastating consequences.

Hi-Watt partners with trusted brands like Watlow, BriskHeat, and Chromalox to design and build robust, low-maintenance custom heaters for many precision-demanding remote applications. Some of our recommended brands and models for these applications include:

Watlow FIREROD® Cartridge Heaters

Watlow’s FIREROD® cartridge heaters can be easily adapted for different applications. Watlow revolutionized the process heating industry when the model was first released in 1954, and it remains one of the most adaptable options for food service, biopharma, oil and gas refining, and other critical processes.

Designed for efficiency and durability, FIREROD® features an Alloy 800 sheath that resists corrosion and oxidation, as well as nickel-chromium resistance wire and magnesium oxide insulation for faster startup and reliable use, even after thousands of cycles. For better control, FIREROD can be paired with Watlow’s EZ-ZONE RMA Plus Remote Access Module, providing real-time communication and control at a distance.

Best for: Molds, dies, hot runner systems, lab and test equipment, packaging machinery

Note: Getting the specifications correct is critical. Most cartridge heater failures are caused by improper bore fit or excessive watt density.

Watlow Duct Heaters

Watlow’s Duct Heaters are efficient, controllable, and adaptable to many types of non-pressurized HVAC systems. Individual heating modules can be easily replaced as needed, reducing maintenance and repair costs over time. Plus, with these all-electric heaters, there’s no need for the fuel lines and flues that gas or oil-fired heating coils require. No flue means no waste heat, providing 100% energy efficiency across various airflow levels. Installation is also easy; the heaters can be quickly bolted directly to the exterior of the duct wall.

Best for: Remote enclosures, HVAC systems, equipment shelters, process air heating

Note: Electric heaters eliminate combustion risks, but airflow should be verified before purchasing a duct heater. Low airflow leads to overheating and premature failure.

Watlow HYDROSAFE® Heat Exchanger

Refining gas requires heat exchangers that can provide precise heat control AND withstand extremely high pressures. The Watlow HYDROSAFE® Heat Exchanger is one of the best low-maintenance process heaters for gas refining applications due to its flexible heating capabilities and robust design that prevents seal gas from corroding the heating elements.

HYDROSAFE has a touch-safe exterior, holds complete assembly hazardous certifications, and is around 50% smaller than comparable circulation heaters.

Best for: Oil and gas processing, chemical systems, remote thermal fluid loops

Watlow OPTIMAX® Heat Exchanger

Watlow’s OPTIMAX® is a compact, next-gen heat exchanger that uses optimized film temperature and enhanced fluid-dynamics technology to deliver improved heat transfer and lower pressure drops. The quality and accuracy of both technologies have been tested through CFD/FEA modeling. This heat exchanger is certified for use in some hazardous areas and is compatible with Watlow’s WATCONNECT control panel system for enhanced temperature and process control.

Best for: Oil and gas processing, chemical systems, remote thermal fluid loops

Watlow HELIMAX® Heat Exchanger

Safely achieve gas regeneration goals, address steam superheating challenges, and manage hot-oil heating with Watlow’s HELIMAX® Heat Exchanger. This heater exchanger has a compact, continuous helical flow design that eliminates dead zones and reduces the risk of fouling in high-demand applications. With the HELIMAX®, you can minimize hot spots in essential processes while achieving temperatures up to 1,202°F (650°C) and pressures up to 300 psi.

Best for: Oil and gas processing, chemical systems, remote thermal fluid loops

Chromalox CXH Hazardous Location Unit Heater

Chromalox CXH is one of the best low-maintenance process heaters for sewage treatment plants, oil refineries, and agricultural processes with dust explosion hazards. It’s explosion-proof, approved for numerous hazardous areas, including ATEX, IECEx, UL, FM, and CSA, and built with remote operation in mind.

Best for: Agricultural processes, sewage treatment plans, oil refineries

BriskHeat Self-Regulating Heating Cables (High-Temperature Model)

Process heaters that rely on a constant flow of air or fluid can become damaged when pipes and tanks freeze. BriskHeat’s Self-Regulating Heating Cables provide reliable freeze protection in any industrial setting. These cables can withstand temperatures up to 248°F (120°C), are available in 110-120V or 208-277V configurations, and can be customized with a fluoropolymer overjacket for harsh chemical environments.

Best for: Control panels, remote enclosures, pump stations, industrial shelters, light hazardous locations

What Makes a Heater “Low-Maintenance”?

• Watt Density: The heater has to be sized to the application. Oversized heaters run cooler and last longer but undersized heaters burn out quickly.
• Corrosion Resistance: When used in harsh environments, heaters should be constructed from Alloy 800, stainless steel, or Incoloy for improved corrosion resistance.
• Replaceable Components: Elements within the heater should be easy to replace without complete disassembly.
• Integrated Temperature Sensing: Integrated sensors provide accurate feedback that helps prevent overheating and cycling damage.
• Remote Monitoring Capability: Heaters designed for remote applications will have remote monitoring capabilities that allow you to identify problems before they cause significant failures.

Find Your Solution at Hi-Watt

The right heater can make all the difference in your design, but remember: sensors and controllers matter, too, and can have just as much impact on your process.

If you manage critical applications off-site, get product support and guidance from our experts at Hi-Watt. We regularly design controls, sensors, and heaters for oil, gas, and chemical processing applications, and, as a turnkey supplier, can also provide ongoing support, including installation/integration assistance, troubleshooting/diagnostics, repairs, and calibration services.

Are you ready to find your solution? Contact us today to get started.