China Duct Heaters Manufacturers Suppliers Factory

Your Professional Duct Heaters Supplier

In 1986, we entered the electric heater industry.Our Factory established in 2000. It covers more than 4500 square meters.We located in yangzhong city, jiangsu province, 2 hours drive to Shanghai with convenient transportation access worldwide.Xianglong is a manufacturer with research and development ability.Since 1986, the products are sold all over the country and Japan, South Korea, Europe, the United States, Southeast Asia and other countries.We provide more than products, we help customers to provide electric heater solutions.Our products are widely used in electric power, metallurgy, metal products, chemical industry, renewable new energy and other fields.While ensuring performance, we provide customers with more effective and more economical solutions.

Industrial Air Duct Heater

Industrial Air Duct Heater1.Air Heating2.Power（KW）:153.Design Temperature:60℃

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Air Duct Heater

Duct heaters are composed of open coil, tubular or finned tubular heating elements that are either

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why choose us

Production Market

Our products have been successfully sold to Europe, Malaysia, Vietnam and other places. And our heating pipes are sent to over 10,000 units/ year in Japan.

Our Certificate

Certification: CE，ISO9001，Explosion proof certificate，Work safety certificate

Our Product

Flange heater, Explosion-proof heater, Air duct heater, Circulation heater, Heating element, Control system, etc.

Production Equipment

Automatic powder adding machine, Automatic tube shrinking machine, Automatic wire winding machine, Automatic pipe bender, Automatic argon arc welding machine

Specifications

Dimensions Reference Number	"A"		"B"		"C"		"D"		"E"		"F"		"G"		Number of Elements	Approximate Net Weight
Dimensions Reference Number	in	mm	in	mm	in	mm	in	mm	in	mm	in	mm	in	mm	Number of Elements	lbs	kgs
1	27-7/8	708	20	508	2-3/4	70	6-1/2	165	3	76	3-5/8	92	2-1/2	64	6	22	10
2	27-7/8	708	20	508	4-3/4	121	8-1/2	216	5	127	5-5/8	143	3-1/2	89	12	31	14
3	27-7/8	708	20	508	6-3/4	171	10-1/2	267	7	178	7-5/8	194	3	76	18	41	19
4	27-7/8	708	20	508	8-3/4	222	12-1/2	318	9	229	9-5/8	244	2-3/4	70	24	51	23
5	27-7/8	708	20	508	10-3/4	273	14-1/2	368	11	279	11-5/8	295	3-1/4	83	30	62	28
6	27-7/8	708	20	508	12-3/4	324	16-1/2	419	13	330	13-5/8	346	3-3/4	95	36	73	33
7	27-7/8	708	20	508	14-3/4	375	18-1/2	470	15	381	15-5/8	397	4-1/4	108	42	84	38
8	27-7/8	708	20	508	16-3/4	425	20-1/2	521	17	432	17-5/8	448	4-3/4	121	48	95	43
9	27-7/8	708	20	508	18-3/4	476	22-1/2	572	19	483	19-5/8	498	5-1/4	133	54	106	48
10	27-7/8	708	20	508	20-3/4	527	24-1/2	622	21	533	21-5/8	549	5-3/4	146	60	117	53
11	32-7/8	835	25	635	20-3/4	527	24-1/2	622	21	533	21-5/8	549	5-3/4	146	60	130	59
12	40-3/8	1026	32-1/2	826	20-3/4	527	24-1/2	622	21	533	21-5/8	549	5-3/4	146	60	155	70
13	49-3/8	1254	41-1/2	1054	20-3/4	527	24-1/2	622	21	533	21-5/8	549	5-3/4	146	60	180	82

Advantages of Duct Heaters

Energy efficiency
Duct heaters contribute to energy savings through their precise temperature control capabilities and efficient heating mechanisms. Delivering heat directly into the air stream minimizes heat loss and ensures optimal energy utilization. This energy efficiency reduces operational costs and aligns with sustainability goals, making duct heaters an environmentally conscious choice for industrial heating.

Flexibility and Customization
One of the critical advantages of duct heaters is their flexibility and ability to be customized to meet specific industrial requirements. Manufacturers offer many options, allowing you to tailor duct heaters to match your needs. This customization includes heating capacity, dimensions, control options, and even integration with existing HVAC systems. You can achieve optimal performance and operational efficiency by selecting duct heaters that align precisely with your industrial processes.

Improved process control and Product quality
Duct heaters play a crucial role in maintaining consistent temperatures within industrial processes. By ensuring precise temperature control, they contribute to improved process control, leading to higher product quality. Whether you require uniform heating in industrial ovens, meticulous temperature maintenance in cleanrooms, or proper heat treatment in manufacturing processes, duct heaters provide the reliability and stability necessary to achieve consistent results.

Critical considerations for duct heater selection
When choosing duct heaters for your industrial applications, it is essential to consider different aspects to ensure the best for your specific needs:

Heating capacity
Evaluate the heating capacity requirements of your industrial processes. Consider room size, heat loss, and desired temperature rise to select a duct heater with the appropriate heating capacity. Undersized heaters may lead to inadequate heating, while large heaters can result in energy wastage.

Control options
Assess the control options offered by different duct heaters. Look for features such as built-in thermostats, external temperature sensors, or compatibility with building automation systems. These options allow precise temperature control, optimizing heating operations, and energy savings.

Construction materials
Consider the construction materials of the duct heater, especially when working in challenging industrial environments. Choose fabrics with corrosion resistance and durability, ensuring longevity and reliable performance even in harsh conditions.

Safety features
Prioritize the safety features of duct heaters to protect personnel, equipment, and processes. Look for components such as overheat protection, high-limit switches, and pressure relief valves. These safety mechanisms ensure the secure operation of duct heaters and mitigate the risk of accidents or damage.

Application Areas of Duct Heaters

Industrial ovens and dryers

Duct heaters are extensively employed in industrial ovens and dryers to ensure uniform and precise heating. They contribute to the drying, curing, or baking of various materials used in manufacturing processes. By delivering consistent heat distribution, duct heaters enable efficient and reliable drying operations, resulting in improved product quality and reduced processing times.

Heat treatment processes

Duct heaters are instrumental in maintaining specific temperatures during heat treatment processes such as annealing, tempering, or stress relieving. These processes require precise temperature control to achieve desired material properties. Duct heaters provide a dependable and controlled heat source, allowing manufacturers to achieve optimal heat treatment results consistently.

Chemical and petrochemical industries

The chemical and petrochemical industries rely on duct heaters for heating fluids, process gases, or air streams critical for chemical reactions, distillation, or filtration processes. Duct heaters facilitate the controlled and efficient heating of these substances, ensuring precise temperature control within reaction vessels, distillation columns, or heat exchangers. This contributes to improved process efficiency, enhanced product quality, and compliance with stringent industry standards.

Warehouses and Distribution centers

In extensive storage facilities, maintaining optimal temperatures is crucial for preserving the quality and integrity of stored goods. Duct heaters provide efficient space heating, ensuring consistent temperatures throughout the warehouse. By preventing temperature fluctuations and cold spots, these heaters contribute to the longevity and freshness of stored products.

Manufacturing plants and Assembly lines

Consistent temperatures are paramount in production areas within manufacturing plants and assembly lines. Duct heaters are pivotal in maintaining precise and uniform temperatures, directly impacting product quality and employee comfort. Duct heaters help optimize manufacturing processes, improve product consistency, and enhance employee well-being by preventing temperature differentials.

Cleanrooms and Laboratories

Cleanrooms and laboratories require stringent environmental controls to maintain sterile and controlled conditions necessary for research and manufacturing processes. Duct heaters are of utmost importance in these environments, providing precise temperature control within the HVAC system. By delivering uniform heating, duct heaters help achieve the required temperature stability, ensure sensitive experiments’ integrity, and promote product safety and quality.

Types of Duct Heaters

Electric duct heaters

Electric duct heaters are the most common type of duct heater used in commercial and industrial settings. They are energy-efficient and easy to install, making them a popular business choice. Electric duct heaters come in two types: open coil and tubular. Available coil heaters are ideal for low-temperature applications, while tubular heaters are better suited for high-temperature applications.

Gas-fired duct heaters

Gas-fired duct heaters are another popular choice for businesses. They are typically used in large industrial applications where electricity is unavailable or too expensive. Gas-fired duct heaters are more energy-efficient than electric heaters and can produce higher temperatures. However, they require a gas supply and may only suit some buildings.

Steam duct heaters

Steam duct heaters are used in applications where high-temperature air is required. They are typically used in large industrial settings where steam is readily available. Steam duct heaters are energy-efficient and can produce very high temperatures. However, they require a steam supply and may only be suitable for some buildings.

Hot water duct heaters

Hot water duct heaters are similar to steam duct heaters but use hot water instead of steam. They are typically used in public and industrial applications where hot water is readily available. Hot water duct heaters are energy-efficient and can produce high temperatures. However, they require a hot water supply and may only suit some buildings.

Indirect-fired duct heaters

Indirect-fired duct heaters are used where the heated air must be kept separate from the fuel source. They are typically used in clean rooms or applications where combustion byproducts must be kept separate from the wild perspective. Indirect-fired duct heaters are energy-efficient and can produce high temperatures. However, they require a separate combustion chamber and may not be ready for all buildings.

Certificate

Our Service

Pre-sale service

Quick answers from professionals
Free design drawings
Speed quote: working days: within 24 hours; holidays: within 72 hours
Free samples

In-sale service

Provide OEM & ODM custom service
7*24 online service;We can arrange factory inspection service according to customer's requirement

After-sales service

Professional quality inspection & logistics follow-up
Long warranty period: 18 months
Free installation guidance (telephone & video & on-site)

OUR ADVANTAGES

BUSINESS PARTNER

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Payment & Packing & Delivery

Payment	VISA,TT，Western union，Paypal, etc.
Packing	Wooden case or customized
Shipping	Sea & air & land transportation, etc.
Delivery Time	Sample: 10 working days after payment Other custom products: negotiation

FAQ

Q: Could you help us to manufacture the machines with our logo or design?

A: Yes,we do OEM&ODM.Just tell us your requirements.

Q: Can I visit your factory?

A: Yes.Welcome to our factory any time!

Q: How should I do if meet some trouble while using?

A: We provide English instruction,after-sale online&tel communication.

Q: Could I get a sample?

A: Yes

Q: How long is the warranty period for product?

A: 18months.

Q: When will the order be delivered?How to pack?

A: About shipped in 10 days after payment,with wooden case.

Q: Does a duct heater require a disconnect?

A: Disconnecting Means – All duct heater installations require a disconnecting means at or within sight of the heater controls. We recommend that a built-in, snap- acting, door interlocking disconnect switch with marked “on” and “off” positions be specified on all duct heaters.

Q: How do you calculate duct heaters?

A: The first step in determining the appropriate heater size for your duct heater is calculating the required wattage. This can be done by multiplying the airflow rate (cubic feet per minute or CFM) by the temperature rise (in degrees Fahrenheit) and then dividing by 3.41. The resulting number is the required wattage.

Q: How to control a duct heater?

A: There are many ways to control an electric duct heater: modulating (0-10Vdc), pulse (24Vac or dry contact), On/Off (24Vac) or stages. In this document we will consider on/off or staged control. Stages are a series of On/Off outputs (inputs to the heater) that increase the heater capacity with each step activated.

Q: How does a ducted heater work?

A: The system pushes the warm air through a network of ducts that connect to vents and registers in different rooms. There's also a return air grille that helps circulate air back to the heater, where the whole process starts again. That's why the temperature outside doesn't affect how warm your rooms can be.

Q: What temperature should a duct heater be?

A: Promote heater life by keeping sheath temperature below the 1400°F (760°C) maximum. Measure process temperature in the outlet stream, away from the heater. Maintain wiring integrity by keeping enclosure temperature below 400°F (205°C). Thermal cycling can cause terminations to loosen.

Q: Why use duct heater?

A: A bundle of several smaller duct heaters can be made and assembled in series for high heat duty in specific applications. They are primarily used for heating, ventilation, and air conditioning (HVAC), although they can also be helpful for drying or preheating solid objects.

Q: How do you turn on a ducted heater?

A: Ensure that the gas supply tap, adjacent to the heater is turned ON. Turn ON the 240V power supply at the power point located near the heater, ensuring the plug is firmly located in the socket. Now go to the Wall Control and turn it ON, the heater may now be operated from the Wall Control.

Q: How long do ducted heaters last?

A: 15 years
Help, my ducted heating is breaking down or not performing as it should! The average lifespan of your Ducted Gas Heating System is 15 years, but with regular servicing and maintenance, you can get up to 20 years out of a unit.

Q: How do I choose a duct heater?

A: Selection Criteria. Important parameters to consider when specifying duct heaters are maximum operating temperature, heating capacity and maximum air flow. Other considerations include type of heating element, dimensions and various features.

Q: Why does my ducted heater keep turning off?

A: This could happen due to dirty air filters or loose wiring. Dirty air filters reduce airflow and this can lead to the heater using too much power to heat your home, and in turn, this may lead to the safety switch being tripped. Cleaning out dust and debris regularly from the filters regularly can help prevent this.

Q: Do ducted heaters need servicing?

A: For gas ducted heating, we recommend that servicing takes place at least once every 2 years. Put simply, if you fail to schedule a professional service, your ducts will be dust – Both figuratively and literally full of dust!

Q: How do you size a duct heater?

Q: Do ducted heaters have a pilot light?

A: For all modern appliances this fail-safe switch is built in – if you are worried about an older heater and gas leaks please call us asap to check the safety of the gas appliance. If your pilot light on the central ducted gas heater keeps going off then this is a major issue that needs attention urgently.

Q: What temperature should a duct heater be?

A: Application Hints
Promote heater life by keeping sheath temperature below the 1400°F (760°C) maximum. Measure process temperature in the outlet stream, away from the heater. Maintain wiring integrity by keeping enclosure temperature below 400°F (205°C). Thermal cycling can cause terminations to loosen.

We're professional duct heaters manufacturers and suppliers in China, specialized in providing the best customized service with competitive price. We warmly welcome you to buy high quality duct heaters made in China here from our factory.

Duct Heaters, Air Duct Heater

Duct Heaters

Industrial Air Duct Heater

Air Duct Heater