Description
This Electric Auxiliary PTC Heater is a high-performance, compact heating module designed for integration into forced-air HVAC systems. Engineered with advanced Positive Temperature Coefficient (PTC) ceramic technology, it delivers rapid, efficient, and safe supplemental heat. With a substantial power rating of 4000W (4KW) and a slim profile of 500mm in length, 75mm in width, and a mere 15mm in thickness, it is perfectly suited for installation within standard air ducts or air handling units (AHUs). This unit serves as an ideal solution to boost air temperature quickly, providing auxiliary or emergency heating in various commercial and residential applications.
Specification
| Name | PTC Air Heater |
| Voltage | 220V |
| Power | 4000W or Customized |
| Size | 500x75x15mm or Customized |
| Medium | Air |
| Material | Aluminum |
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Features
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Advanced PTC Ceramic Heating: The core component self-regulates its temperature. As it heats up, its electrical resistance increases, preventing overheating. This ensures inherent safety, energy efficiency, and a long operational lifespan without the risk of dangerous overheating.
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High Power & Rapid Heating: At 4000W (4KW) of power, the heater provides a substantial and immediate heat output, ensuring a swift temperature rise of the airflow passing through the duct.
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Compact & Slim Design: The dimensions (500x75x15mm) offer a streamlined form factor. This allows for versatile and space-efficient installation directly into air ducts, fan coils, or central air systems without causing significant airflow restriction.
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Robust Construction: Built with durable aluminum fins and a sturdy metal casing, the unit is designed to withstand continuous operation in various environmental conditions within the ductwork.
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Safe Operation: In addition to PTC self-regulation, the heater typically features built-in safety protections such as over-temperature fuses or thermal cutoffs, providing an extra layer of safety.
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Easy Installation: Designed for straightforward integration, it comes with standard mounting brackets or can be easily secured, and features standard electrical terminals for connection to a 220V AC power supply and system controller.

Application
This auxiliary PTC heater is versatile and suitable for a wide range of applications where supplemental duct heating is required:
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HVAC System Boosters: Integrated into central heating, ventilation, and air conditioning systems to provide additional heat during extremely cold weather or to compensate for heat loss in long duct runs.
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Heat Pump Supplementary Heating: Acts as an efficient backup for air-source heat pumps during defrost cycles or when outdoor temperatures drop below the heat pump's optimal efficiency range.
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Fresh Air Ventilation Systems: Heats incoming cold fresh air in Energy Recovery Ventilators (ERVs) or Heat Recovery Ventilators (HRVs) to maintain comfortable indoor temperatures.
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Drying & Industrial Process Air: Used in specialized equipment for drying processes, industrial air handling units, or livestock farming ventilation where controlled warm air is necessary.
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Commercial & Residential Fan Coils: Installed within fan coil units to enhance their heating capacity for zonal temperature control in hotels, offices, and apartments.

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