Marine Duct Heater

Name: Marine Duct Heater | Hazerdous Location Inline Maritime Duty
Brand: Indeeco

Marine HVAC designers and shipyard procurement engineers specify Marine Duct Heaters for reliable, corrosion-resistant heating in critical vessel ventilation systems. Knape Associates distributes these units in a range of configurations, including side or bottom-terminal boxes and flange-mount or slip-in models, to fit diverse duct layouts.

Each marine-grade duty heater prevents condensation, protects equipment, and complies with stringent marine commercial and non-combat naval applications standards.

Certifications

ABS approved
U.S. Coast Guard 46CFR111.87
UL 1996 (File # E23192)

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Performance, Compliance, and Construction

The Marine Duct Heater resists shock and vibration per MIL-S-901 and MIL-STD-167-1. It meets optional low-magnetic-permeability requirements under MIL-I-17214. The heating element uses Monel 400 finned tubular construction with hermetic terminal seals. The frame is fabricated from Type 304 stainless steel for long-term corrosion resistance in saltwater environments.

Marine Duct Heater Mounting & Installation

You can install the heater by slipping it into the duct wall or by bolting its flange to the duct. Captive nuts come pre-installed in the mounting holes. These nuts let you attach the heater quickly with standard hardware. You can position the terminal box on the side or bottom. You can also set the airflow direction to match your duct layout.

Electrical & Safety Features

The heater includes a thermal cutout that shuts the power off if it overheats. A magnetic contactor controls the power circuit. An airflow switch prevents heating when air stops flowing. A built-in control transformer supplies the correct voltage to the controls. To match your system needs, you can add pilot lights, SCR panels, or step-type electronic controls.

What are Marine Duct Heaters used for?

What are Marine Duct Heaters used for? Marine Duct Heaters are used to heat air in commercial and non-combat Naval vessel ventilation systems. They provide corrosion-resistant, controlled heating and meet U.S. Coast Guard, UL, and ABS standards for safety and performance in marine environments.

Marine Duct Heater Manufactures

Indeeco Marine Duct Heaters

HVAC Integration of Marine Duct Heaters

The Marine Duct Heater connects directly to standard HVAC control panels and PLC systems. Temperature sensors mount inside the duct and send continuous feedback to your building management system. This feedback loop keeps duct air within target ranges and prevents overheating or energy waste. Integration uses familiar signal protocols, so you avoid costly custom coding or exotic hardware.

Precision Power Control with SCR Modules

Silicon Controlled Rectifier (SCR) modules let you fine-tune heat output without steps or jumps. The module adjusts current flow in real time, smoothing temperature ramps and protecting ductwork from thermal stress. You gain tighter temperature regulation and lower peak power demand. This level of control supports compliance with MIL-spec transient requirements and reduces wear on electrical components.

Organized Wiring via Terminal Strips

All field wiring terminates on labeled terminal strips inside the heater’s junction box. Technicians trace circuits at a glance, speeding diagnostics and repair. Strips keep conductors neat, prevent loose connections, and simplify future expansions.

Flexible Conduit and Cable Options

Choose from flexible conduit, armored cable, or standard junction-box entries to match your vessel’s wiring practices. Flexible conduit bends around obstacles in tight mechanical spaces. Armored cable protects conductors from vibration, moisture, and abrasion in engine rooms. Standard entries let you use existing raceways without rework. This adaptability ensures a code-compliant installation in any marine environment.

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Tailored Heating Solutions for Optimal Marine Ventilation

Knape Associates will help you choose the ideal Marine Duct Heater configuration for your vessel’s unique ventilation system and performance needs. Their expert team analyzes your duct dimensions, airflow rates, and control preferences to recommend the right mounting style, heating element rating, and control accessories.

Count on Knape Associates for precise spec validation, hands-on installation guidance, and fast fulfillment, so your system meets safety standards and runs at peak efficiency from day one.

Supplying Ventilation Equipment

Knape Associates can provide fast quotes on the right industrial products for your application.

We are official representatives of industrial ventilation products that covers Texas and beyond.

We can also send out a trained specialist to assess the area and make sure the proper equipment is being used for your specific application.