1. Introduction
This PTC Ceramic Air Heater is an electric heating element designed for various applications requiring automatic constant temperature and energy-saving heating. It features a PTC ceramic heating element and an aluminum tube, ensuring low thermal resistance and high heat transfer efficiency. With its surface insulation and high security, it is ideal for heating small instruments, small box spaces, and can be applied in air conditioners, electric heaters, general appliances, air curtain machines, humidifiers, and more.
2. Safety Information
WARNING: Electrical shock hazard. Improper installation or use can lead to serious injury or death.
- Always disconnect power before installation, maintenance, or troubleshooting.
- Ensure the heater is installed by a qualified professional if you are unsure about electrical wiring.
- Do not expose the heater to water or excessive moisture.
- Ensure proper ventilation around the heater to prevent overheating.
- Keep flammable materials away from the heating element.
- The heater contains 70 degrees temperature control protection. Do not bypass or modify this safety feature.
- Use only with the specified voltage (12V, 24V, 36V, or 48V) for your model.
- The lead wires are made of silicone high-temperature wire; ensure they are not damaged or exposed.
3. Product Overview
The PTC Ceramic Air Heater is a compact and efficient heating solution. Below are visual representations of the product and its typical applications.
Video: PTC Ceramic Air Heater 360-degree view.

Figure 3.1: Front view of the PTC Ceramic Air Heater with pre-attached wiring.

Figure 3.2: Side view showing the compact dimensions of the heater.

Figure 3.3: Example application in a small room environment.

Figure 3.4: Example application for heating within an appliance like an oven.
4. Specifications
| Feature | Description |
|---|---|
| Model Number | PTC air heater insulation |
| Material | Aluminum products |
| Weight | 127g / 4.5oz |
| Heating Material | PTC Thermistor |
| Heating Mode | Heat radiation by air flow |
| Lead Wire Material | Silicone high temperature line |
| Voltage Options | 12V, 24V, 36V, 48V (DC) |
| Power Options | 150W (for 12V), 200W (for 24V, 36V, 48V) |
| Mounting Distance Dimensions | 55mm x 68mm |
| Temperature Control Protection | Heater contains 70°C temperature control protection |
| Size (L×W×H) | 75.5mm × 76.5mm × 26mm (3in × 3in × 1in) |
| Corrugation Length | 30mm |
| Origin | Mainland China |
5. Setup
Careful installation is crucial for the safe and effective operation of your PTC Ceramic Air Heater.
5.1 Mounting
- Identify a suitable location for the heater, ensuring adequate airflow and clearance from flammable materials.
- The heater has mounting holes with a distance of 55mm x 68mm. Use appropriate screws or fasteners to secure the heater firmly to a stable surface.
- Refer to Figure 3.2 for visual guidance on mounting dimensions.
5.2 Wiring
CAUTION: Ensure power is OFF before connecting wires.
- The heater comes with pre-attached silicone high-temperature lead wires (typically red/yellow and black/brown).
- Connect the bare ends of these wires to your power source. For DC voltage models, the bare line can be connected regardless of positive and negative polarity, as long as the rated voltage is supplied.
- Ensure all connections are secure and properly insulated to prevent short circuits or electrical hazards.
- Verify that the supplied voltage matches the rated voltage of your specific heater model (e.g., 12V, 24V, 36V, or 48V).
- Refer to Figure 3.1 for a visual of the wiring.
6. Operating Instructions
Once properly installed and wired, operating the PTC Ceramic Air Heater is straightforward.
- Ensure all safety precautions have been observed and the heater is securely mounted.
- Apply the rated voltage to the connected lead wires.
- The PTC ceramic heating element will automatically heat up and maintain a constant temperature. This product is designed for energy-saving operation.
- The heater includes a 70°C temperature control protection, which will prevent it from exceeding this temperature under normal operating conditions.
- To turn off the heater, simply disconnect the power supply.
7. Maintenance
Regular maintenance helps ensure the longevity and efficient operation of your PTC Ceramic Air Heater.
- Cleaning: Periodically inspect the heating element and aluminum fins for dust or debris accumulation. With power disconnected, gently clean with a soft brush or compressed air. Do not use liquids for cleaning.
- Inspection: Regularly check the lead wires for any signs of wear, fraying, or damage. Ensure all electrical connections remain secure.
- Ventilation: Ensure that the area around the heater remains unobstructed to allow for proper airflow and heat dissipation.
- Do not attempt to disassemble the heater beyond what is necessary for cleaning or inspection.
8. Troubleshooting
If you encounter issues with your PTC Ceramic Air Heater, refer to the following common troubleshooting steps:
- Heater not turning on:
- Check if the power supply is connected and active.
- Verify that the voltage supplied matches the heater's rated voltage.
- Inspect wiring connections for looseness or damage.
- Insufficient heating:
- Ensure adequate airflow around the heating element. Obstructions can reduce heat transfer efficiency.
- Confirm the power supply is stable and providing the correct voltage and current.
- Overheating or unusual smells:
- Immediately disconnect power.
- Check for any obstructions blocking airflow.
- Do not operate if you detect burning smells or see smoke. Contact support.
9. User Tips
No specific user tips were available from reviews or Q&A for this product. However, general advice for PTC heaters includes:
- For optimal performance, integrate the heater into an enclosure or system that allows for forced air circulation (e.g., with a small fan) to maximize heat transfer.
- Consider the ambient temperature of your application, as this can influence the heater's output and efficiency.
- When designing DIY heating tools, ensure the enclosure material can withstand the heat generated by the element.
10. Warranty & Support
For warranty claims, technical support, or any questions regarding your PTC Ceramic Air Heater, please contact the retailer or the Mandopet Official Store directly. Keep your purchase receipt as proof of purchase.