electric duct heater elements

Applications

Consumer Appliances: Central air conditioning auxiliary heating, residential heat pump systems, smart home ventilation units.

Industrial Equipment: Commercial HVAC duct heaters, industrial air handling systems, agricultural greenhouse climate control, warehouse dehumidification/warming systems.
Specialized Use: Cleanroom heating, data center HVAC modules, cold storage pre-heating, marine vessel ventilation systems.

Product parameters and specifications

Power range:
Household: 500W–2000W (small HVAC system, split air conditioner auxiliary heating)
Commercial/industrial: 2000W–20kW (central air conditioning, industrial HVAC duct heating)
Working voltage: 110V/220V single-phase AC or 380V–480V three-phase AC (global power grid compatible, error ≤±5%).

Resistance value: 3Ω–50Ω (accurately matched by voltage and power, error ≤±3%).

Working temperature:
Conventional model: continuous and stable operation of 80°C–150°C (self-limiting temperature design, anti-overheating).
High temperature model: short-term tolerance of 200°C (customized heat dissipation structure and ceramic coating are required).

Material:
Heating element: nickel-chromium alloy (NiCr, high temperature oxidation resistance) or PTC ceramic chip (self-limiting temperature characteristics).
​​Heat dissipation structure: aluminum fins (thermal conductivity ≥ 200W/m·K) or stainless steel tubes (corrosion resistant).
​​Surface treatment: anodized layer (corrosion resistant) or enamel coating (anti-peeling).
​​Dimensions:
Tube diameter: Φ8mm–Φ50mm, length 100mm–1500mm (supports U-shaped, spiral or flat customization).
Fin spacing: 5mm–30mm (adjustable wind resistance and heat dissipation efficiency).
​​Service life: 15,000–60,000 hours (based on operating temperature and heat dissipation conditions).
​​Customizable services: support power, voltage, temperature control mode adjustment, optional explosion-proof certification (Ex d IIB T4), IP protection level (such as IP66), integrated NTC sensor, etc.

Core advantages

Efficient heating and energy saving:

PTC ceramic self-limiting temperature technology: Automatically reduce power when the temperature exceeds the set value to prevent overheating and combustion, and reduce energy consumption by 30% compared with traditional resistance wire.

The thermal conductivity of the nickel-chromium alloy heating element is ≥150W/m·K, and the temperature rises to 100°C within 3 minutes, which is suitable for the rapid heating needs of air conditioners.

Safe and reliable:

IP66 protection level: dustproof and splashproof, suitable for humid or dusty industrial environments.

Automatic power off when tilting: Immediately power off when the tilt angle is greater than 15°, in line with UL/CE safety standards.

Uniform heat dissipation and silent operation:

The aluminum fin design optimizes airflow distribution, and the heat exchange efficiency is ≥95%, avoiding local overheating.

No mechanical vibration noise, suitable for low-noise operation at night.

Corrosion resistance and long life:

316L stainless steel or anodized aluminum is resistant to salt spray corrosion (test ≥500 hours), and the life is 2-3 times longer than ordinary resistance wire.
​​Intelligent compatibility​​:
Supports PWM power regulation and IoT access (APP remote temperature control), and is compatible with smart home systems (such as HomeKit/Alexa).
Can integrate humidity sensors and link air conditioning dehumidification mode to prevent heating from causing excessive dryness in the room.
​​Environmental protection and adaptability​​:
Zero emissions, no odor, in line with the EU ErP energy efficiency directive (A+++ grade).
High humidity resistant design (RH 95%), suitable for air conditioning systems in tropical/coastal areas.