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Duct Heaters

WATTCO™ duct heaters come in various sizes and dimensions to fit any compartment. There are three types of duct heaters available: open coil, tubular or finned tubular heating elements that are either flanged or inserted in the duct. Air duct heaters are primarily used in air flowing ventilation systems and comfort-heating applications while process duct heaters are mainly used for industrial process heating applications (ovens that require re-circulated air or forced circulation). WATTCO™ designs and configures your electric heating element according to your specifications. Our team is dedicated to research and development, using the latest technologies while striving to meet every customer’s needs by manufacturing high quality industrial heating products. Since 1969, WATTCO™ has expertise in developing and manufacturing electrical heating elements that make Wattco duct heaters, the most easily adaptable industrial heating solution for most non-pressurized, air-heating systems.

A broad range of custom-built electric duct industrial heaters with capacities up to 1000kW is available upon request. WATTCO™ heaters can be used for applications with the following voltages: • 347 volts/1 phase • 600 volts/1 phase • 600 volts/3 phases • 208/240 volts/1 phase • 208 volts/3 phases WATTCO™ duct heaters have the international, American recognized, Canadian Standards Association (CSA us) label, which set the standards for the electric heating industry. Duct heaters can include proper built-in safety devices to extend the service life of the heater. Get a quote on a duct heater today. WATTCO also manufactures other industrial heating products such as infrared heaters, control panels, immersion heaters and more. Click here to view all of our products

TERMINAL HOUSINGS

Coiled duct heater

duct heater finned

Duct Heater Slip into Duct

Duct Heater Flanged

Tubular duct heater

X section tubular duct heater

Specifications Applications Features & Benefits Literature & Downloads

Finned Tubular Elements vs. Unfinned tubular elements

Finned tubular elements	Unfinned Tubular elements
The most common design	Available for approved special orders only
Include the highest wattage/cross section duct area	Increase corrosion resistance High humidity environments Corrosive chemical contaminants in the air stream
Energy saver	Protect from electrical shock
Made of a steel tube with a corrugated steel fin wrapped around it and brazed together	Made of steel or stainless steel tube
Maximize the heat transfer surface of the element	Can be installed close to a register or grill
Provide lower operating temperature	N/A
Designed for low maintenance	Designed for low maintenance

KEY FEATURES	BENEFITS
16-gauge satin coat steel. Exclusive modular construction with stock frame components used with 2” verticaland horizontal dimensional increments for faster delivery; Single and three-phase tensions; Stainless steel supports; Field replaceable heating elements, if required; ¼” (6 mm) inside diameter thermophile; 3 ½ ” (90 mm) thick insulation; General purpose terminal enclosure; Primary linear cutout: 160ºF (71ºC) 277/600 VAC 25/10 AMP non-inductive Secondary linear cutout: Manual reset with back-up magnetic contactor on units of 300V, 30 kW and less. 225ºF (107ºC) 277/600 VAC 25/10 AMP non-inductive Special sizes, wattages, and materials available upon request; Built stainless steel frames available upon request; American and Canadian Standards Associations (CSA, CSA us & UL) certified.	Versatile Corrosion and oxidation resistant Easy to maintain Easy to install Durable Compatible with local power supplies Built for safety Maximal dielectric strength and heat transfer Minimal heat loss Maintained wiring cooler Clean heat Easy service Minimal downtime

KEY FEATURES

BENEFITS

16-gauge satin coat steel.
Exclusive modular construction with stock frame components used with 2” verticaland horizontal dimensional increments for faster delivery;
Single and three-phase tensions;
Stainless steel supports;
Field replaceable heating elements, if required;
¼” (6 mm) inside diameter thermophile;
3 ½ ” (90 mm) thick insulation;
General purpose terminal enclosure;
Primary linear cutout:
- 160ºF (71ºC)
- 277/600 VAC
- 25/10 AMP non-inductive
Secondary linear cutout:
- Manual reset with back-up magnetic contactor on units of 300V, 30 kW and less.
- 225ºF (107ºC)
- 277/600 VAC
- 25/10 AMP non-inductive
Special sizes, wattages, and materials available upon request;
Built stainless steel frames available upon request;
American and Canadian Standards Associations (CSA, CSA us & UL) certified.

Versatile
Corrosion and oxidation resistant
Easy to maintain
Easy to install
Durable
Compatible with local power supplies
Built for safety
Maximal dielectric strength and heat transfer
Minimal heat loss
Maintained wiring cooler
Clean heat
Easy service
Minimal downtime

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Fin Performance

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Welding Techniques for Industrial Heaters

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Heat treating	Air drying operations	Air handling equipment
Forced air comfort heating	Core drying	Fan coils
Booster air heater	Air pre-heating	Terminal reheating
Multizone reheating	Heat pump auxiliary systems	Return air heating
Resistor load banks	Annealing

Our Products

Duct Heaters

Finned Tubular Elements vs. Unfinned tubular elements

Duct Heater Applications

Latest blogs

Heat Conduction Boundary Conditions

Applications & Advantages of Molten Salt in Heating Systems

Over-the-Side Heater Applications & Advantages

Heating Considerations for Cold Climate Operations

Molten Salt as Heat Transfer Fluid

Immersion Heater Application in Colder Climates

Achieving Carbon Neutrality With Electric Air Heaters

Corrosion Resistance: Ferrous vs Non-Ferrous Metals for Process Heaters

Electric Heaters for Propane Dehydrogenation in Petrochemical Industry

Seal Gas Heater System & Applications

Dry Seal Gas Heating System

Fin Performance

Propane dehydrogenation

Electric Heaters for Plastics Processing

Drywell Immersion Heaters in the Mining Industry

Improving Solar Battery Performance With Electric Heaters

Welding Techniques for Industrial Heaters

Heat Exchanger Configurations

Common Industries that Wattco works with

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Oil and Gas

Food

Defense

HVAC

Pharmaceutical

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