PDF Catalog

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

Latest blogs

Motor Controllers

News
Sep 17 2020

Every electric motor, regardless of its size or purpose, requires some sort of controlling mechanism. Motors come in a large variety of sizes and applications. Simple motors are found in home appliances such as hairdryers in the bathroom, juicers in ...

Over-The-Side Heater Installation Types

News
Sep 9 2020

Over-the-side heaters are versatile heating systems, offering convenient, reliable heating for a variety of applications. They are used in important processes including degreasing tanks, parts cleaning, heat transfer fluids, and plating tanks. OTS he...

Tank Heaters for Shale Gas Storage

News
Sep 8 2020

The shale boom in the USA has hit peak productivity. While Americans enjoy the benefits of plentiful, cheap gas, producers face new challenges. Namely, there is an increased need for shale gas storage due to the vast quantities produced. To maintain ...

Warning Signs to Look for During Heating System Maintenance

News
Sep 7 2020

Proactive heater maintenance is the key to getting the best performance and value out of your industrial heating system. Taking advantage of regularly scheduled maintenance saves you money, increases safety, and maximizes the operational efficiency o...

Oil Water Separation Using Heating Elements

News
Sep 4 2020

Oil/water separation is an important process in the production of oil and gas. It is especially necessary where fracking methods are employed. A major component of downstream refining processes, separating the oil and water from other fluids makes it...

How to Choose the Right Digital Control Panel for Your Heating System

News
Aug 21 2020

A digital control panel is the brain of your industrial heating system. Controlling the processes, temperatures, operations, and safety of your heaters, it is essential that you choose the right digital control panel and components for your ap...

Desalination – Freshwater Production of the Future

News
Aug 20 2020

Kyle Petitt What is Desalination? Desalination is the process of removing the salt from saline water to make it into drinkable freshwater. Once in the form of fresh water it can be distributed for consumption, agriculture, and other industrial proces...

Electric Heaters in Food & Beverage Pasteurization Systems

News
Aug 18 2020

Product safety and quality are paramount in the food and beverage industry. For many products, those factors rely on pasteurization systems that use electric heaters. The Use and Importance of Pasteurization in the Food Industry The pasteurization pr...

Preventing Condensation in Gas Turbines Before Combustion

News
Aug 13 2020

Electric heaters play a critical role in power generation. In nuclear power they are a driving force, creating the steam that turns in the turbines. Although gas turbines use combustion, not steam, electric heaters can still play an important part in...

High-Velocity Oil Flushing in Circulation Heater Systems

News
Aug 11 2020

A long-lived, efficient heating system relies on proper maintenance and regular cleaning. Industries that use hydraulic or lubrication systems need oil flushing to keep equipment in good working condition. Although there are three main different me...

Nanoparticle Enhanced New Heat Transfer Fluids | Needs & Trends

News
Aug 5 2020

Guest Post: Professor Alina Adriana Minea Fluids are essential for many heat transfer processes in the majority of engineering equipment. Conventional heat transfer fluids include water, ethylene glycol, thermal, and engine oils. Modern processes p...

Defeating the Duck Curve

News
Aug 5 2020

Guest Post: Kyle Petitt Renewable Energy Renewable energy technologies have historically struggled to compete with fossil fuel energy production. Renewables provide clean, carbon emission-free energy production. But, until recently, have been more ex...

Coalescer Skid Systems for Oil & Gas Applications

News
Jul 16 2020

Coalescer filter systems are a key component of Canada’s oil and gas industry. These specialized filtration systems are integral to purifying the hydrocarbon mix, and are an important component of larger separation units. Without a coalescer, oil a...

Identifying & Preventing Thermal Fatigue in Electric Heaters

News
Jul 13 2020

Any industry that works with electric heaters of any kind needs to be aware of thermal fatigue. This type of ongoing thermal stress on your electric heater can easily cause a failure of the machinery, leading to catastrophic losses while endangering ...

Process Skids for Pipeline Heaters

News
Jul 10 2020

Both upstream and downstream pipelines rely heavily on industrial heaters for the transportation, preparation, and maintenance of oil products. Accurate, efficient heaters improve productivity and product quality – while minimizing loss. Electr...

Glycol Uses for Industrial Heating Systems

News
Jul 10 2020

Industrial heating systems, like circulation heaters, generally use either water or glycol mixtures for fluids. In applications where glycol is a suitable fluid, it is almost always the superior option. This article examines the benefits of glycol an...

Role of Electric Heaters In Chillers | Refrigeration Heater

News
Jun 5 2020

Heat plays an essential role in the chilling process. Accurate, reliable, and quick heating is relied on to provide efficient chiller performance. This has made electric heaters an ideal solution for chilling applications. How Chillers Work Refrigera...

How Direct Contact Heaters Evolved to Outperform CFHWs in Power Plants

News
Jun 3 2020

Direct Contact Heaters (DCHs) have become more efficient than Closed Feedwater Heaters (CFHWs). CFHWs have been a mainstay in power plants for decades. Modern technological advances, however, have made DCHs the ideal solution for current and future p...

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

Motor Controllers

Over-The-Side Heater Installation Types

Tank Heaters for Shale Gas Storage

Warning Signs to Look for During Heating System Maintenance

Oil Water Separation Using Heating Elements

How to Choose the Right Digital Control Panel for Your Heating System

Desalination – Freshwater Production of the Future

Electric Heaters in Food & Beverage Pasteurization Systems

Preventing Condensation in Gas Turbines Before Combustion

High-Velocity Oil Flushing in Circulation Heater Systems

Nanoparticle Enhanced New Heat Transfer Fluids | Needs & Trends

Defeating the Duck Curve

Coalescer Skid Systems for Oil & Gas Applications

Identifying & Preventing Thermal Fatigue in Electric Heaters

Process Skids for Pipeline Heaters

Glycol Uses for Industrial Heating Systems

Role of Electric Heaters In Chillers | Refrigeration Heater

How Direct Contact Heaters Evolved to Outperform CFHWs in Power Plants

Common Industries that Wattco works with

Chemical

Oil and Gas

Food

Defense

HVAC

Pharmaceutical

Case Studies View All

Wattco News View All

Most Popular Blogs View All

Downloads