Why Choose Our Furnace Wiring Harness?
- Supports OEM/ODM customization.
- A professional team of engineers will provide you with support to help you optimize your drawings.
- The furnace wiring harness has UL, RoHS, and REACH certifications.
- Choose well-known connector brands such as Tyco, Molex, and Amphenol for cooperation.
- Over 20 years of experience in the field of home appliance wire harness manufacturing.
Your Reliable Custom Furnace Wiring Harness Supplier
Furnace wire harnesses are used to connect electrical power and control signals in a variety of heating systems, including HVAC furnaces, industrial heaters, and gas furnaces. It can ensure that the electrical connections between components such as burners, fans, sensors, and control panels are both safe and stable.
Ecocables can customize wiring harnesses based on boiler drawings or samples, or provide personalized designs according to specific customer needs. Our products feature a variety of wire color options—including red, black, and white—with 18-30AWG. Connector options include reputable brands such as Moeller and Tyco, and multi-branch structural designs are also available for customization.
If you are currently seeking a supplier for heating system wiring harnesses, please do not hesitate to contact us!
Types Of Furnace Wiring Harness
Designed specifically for the high-temperature environments of heating furnaces, these wiring harness solutions can be categorized by function into types such as power harnesses, heating harnesses, and ignition system harnesses.
Its main function is to power the heater, and it has high current and high temperature resistance characteristics.
This product can be connected to heating elements and features excellent resistance to high temperatures and thermal cycling stability.
The part is mainly responsible for the ignition system of the power supply and signal transmission, and has excellent flame-retardant properties.
It connects a thermocouple to monitor the temperature and has EMI anti-interference performance.
This device can connect to pressure, temperature, and airflow sensors, providing stable connectivity and electromagnetic interference (EMI) shielding.
The device can be connected to PCB, PLC, and temperature controller, and has long-term stability.
This part is connected to the fan motor and has anti-vibration performance.
This component is connected to the heating furnace door system and has excellent bending resistance.
Application of Furnace Wiring Harness
Heating furnace wiring harnesses are mainly applied in built-in ovens, microwave ovens, water heaters, dishwashers, and other household appliances, and their performance varies.
Built-In OvenDue to prolonged exposure to high-temperature environments, the heating furnace wiring harness features excellent heat resistance and flame-retardant properties.
Microwave OvenThe heater wiring harness is utilized for high-voltage transformer connections and other applications, featuring high-voltage insulation and anti-interference capabilities.
Water HeaterThe material is widely used in heating elements of water heaters and thermostats. It has excellent waterproof performance and high temperature resistance.
DishwasherIt is suitable for heating pipes, water pumps, motors, and other parts, and has waterproof, moisture-proof, and corrosion-resistant properties.
Why Choose Our Furnace Wiring Harness?
Our furnace harness set has high temperature resistance, moisture-proof, anti-corrosion, and anti-vibration performance in one, comprehensively preventing insulation melting, terminal loosening, and other problems, prolonging the life of the equipment and improving the safety of operation.
It can prevent the melting of the insulating layer and cracking of the wire harness and prolong the life of furnace wire harnesses.
Reduce terminal loosening and poor contact, and maintain electrical stability.
To prevent abnormal electrical fires, improve equipment safety.
It avoids excessive current causing fever, and the wiring harness is not damaged, guaranteeing the stability of equipment operation.
It can reduce the influence of external electromagnetic signals on the control circuit and improve the accuracy of temperature control.
Prevent the oxidation of the terminal and conductor corrosion, prolonging service life.
It can prevent connectors from coming loose and ensure long-term mechanical reliability.
We can customize furnace wiring harnesses based on wire harness drawings or samples, such as wire length and color.
Professional Engineer Support
Ecocables has a professional engineering team that can quickly understand your furnace wiring harness drawings. We can custom-manufacture heating furnace wire harnesses based on your drawings or samples, providing bilingual documentation in both Chinese and English. Additionally, we offer recommendations for drawing optimization, proposals for structural improvements to the wire harnesses, and alternative solutions designed to help our clients reduce costs.
100% Electrical Testing
Ecocables conducts 100% electrical testing on every furnace wiring harness prior to shipment, thereby strictly controlling harness quality. Continuous testing verifies the conductivity of each wiring harness, thus preventing intermittent faults; short-circuit testing aims to improve the safety of the furnace wiring harness. Open-circuit testing checks for breaks in the wiring to prevent functional failures. The withstand voltage test and wire harness insulation resistance test are to check insulation performance and insulation withstand voltage, and the pin test is to prevent wire harness assembly errors. The crimping resistance test is used to check the quality of the wire harness crimping.
Resources
Quickly understand our company’s wiring harness services and clearly identify the types of wiring harnesses.
Company Advantage
Ecocables has always been dedicated to home appliance wiring harness services and has over 20 years of industry experience in the manufacturing of heating furnace wiring harnesses. It has its own 800-square-meter factory, and there are over 100 sets of fully automatic and semi-automatic wiring manufacturing equipment, as well as more than 10 sets of wiring inspection equipment. And it complies with the ISO9001 quality management system standard. It supports rapid prototyping within 3-7 days, provides free samples, and issues inspection reports. After you confirm the sample comparison, proceed with mass production.
The Furnace Wiring Harness Failure Solution
To address issues with existing furnace wiring harnesses, we have implemented solutions—such as upgrading material selection and optimizing structural design—to enhance the performance of your wiring harnesses.
To address issues such as terminal loosening caused by thermal cycling and difficulties in installation within furnace wiring harnesses, we have adopted UL-certified silicone wiring. This significantly enhances heat resistance, thereby preventing terminal loosening induced by thermal cycling. In addition, connectors with locking structures have been added to prevent them from falling off during vibration; at the same time, the wiring harness layout has been optimized to simplify assembly. Ultimately, these measures have resulted in a 20% reduction in equipment assembly time and a significant decrease in field failure rates.
In view of the rapid aging of the PVC insulation layer in the wiring harness of the heating furnace, resulting in frequent shutdown and wire cracking in the heating area. We use PTFE-insulated wires to greatly improve the high-temperature resistance. We also added glass fiber sleeves to strengthen the heat protection capability; at the same time, we optimized the wiring isolation layout in the high-temperature areas to reduce the impact of heat concentration. Finally, the service life of heating furnace wire harness is significantly extended, and the operation stability of furnace equipment is effectively improved.
The heating furnace equipment has the risk of unstable ignition and high-pressure leakage, which seriously threatens the safety of use. We specifically selected high-voltage insulated cables, optimized the crimping process to guarantee terminal connection stability, and conducted 100% high-voltage withstand testing to eliminate hidden risks of leakage. After the improvement, the ignition performance of the heating furnace wiring harness has been enhanced, the operation is stable and reliable, and the electrical safety has been comprehensively strengthened.
The internal space of furnace equipment is compact, the assembly process is complex, and it must meet customized requirements. To address this problem, we designed a compact, multi-branch furnace wiring harness, selected flexible silicone cables to accommodate wiring in confined spaces, and introduced a customized labeling system for easy identification and installation. Finally, the assembly operation was successfully simplified, and the installation error rate was significantly reduced.
Parameters
Help you select the appropriate heating furnace wiring harness based on the relevant parameter table.
- Wire Harness Temperature Resistance Parameter Table
- Materials for Different Temperature Zones
- AWG Current-Carrying Capacity
- Insulation Material Performance Comparison
| Material | Continuous Temp Rating | Short-Term Temp | Flexibility | Main Applications |
| PVC | 80–105°C | 105°C | Good | Low-temp control area |
| XLPE | 125°C | 150°C | Medium | Medium-temp zones |
| Silicone | 180–200°C | 250°C | Excellent | HVAC furnace, moving areas |
| FEP | 200°C | 250°C | Good | Industrial furnace |
| PTFE | 250°C | 300°C | Medium | Heater zones |
| Fiberglass | 450°C+ | 550°C | Low | Extreme heat protection |
| Ceramic Fiber | 600°C+ | 800°C | Low | Ultra-high-temp areas |
| Furnace Area | Typical Temperature | Recommended Material |
| Heating Zone | 250–450°C | PTFE + Fiberglass |
| Near Heating Element | 400°C+ | Ceramic protection |
| Door Area | 100–180°C | Silicone wire |
| Fan Motor Area | 80–120°C | Flexible PVC / Silicone |
| Control Area | 60–100°C | UL control cable |
| Sensor Area | 80–200°C | Shielded PTFE cable |
| AWG | Cross Section (mm²) | Typical Current | Typical Applications |
| 30AWG | 0.05 mm² | 0.5A | Signal wiring |
| 26AWG | 0.13 mm² | 1A | Sensor harness |
| 22AWG | 0.33 mm² | 3A | Control harness |
| 18AWG | 0.82 mm² | 7A | HVAC systems |
| 16AWG | 1.31 mm² | 10A | Blower motor |
| 14AWG | 2.08 mm² | 15A | Heater wiring |
| 12AWG | 3.31 mm² | 20A | High-power heater |
| 10AWG | 5.26 mm² | 30A | Industrial furnace power |
| Material | Heat Resistance | Chemical Resistance | Flexibility | Cost |
| PVC | Low | Medium | Good | Low |
| Silicone | High | Medium | Excellent | Medium |
| PTFE | Very High | Excellent | Medium | High |
| FEP | High | Excellent | Good | High |
| Fiberglass | Extreme | High | Low | Medium |
Testimonials
The delivery schedule is very stable and fully meets our production plan requirements. The quality of each batch of heating furnace wiring harnesses is also very stable, thereby reducing the subsequent inspection workload. During the drawing design and sample production stages, the engineering team was able to provide timely support.
Purchasing ManagerAssembly time has been shortened due to the optimized arrangement and marking of the boiler wiring harness. The furnace wiring harness is perfectly compatible with our furnace control system and requires no modifications.
OEM Manufacturer
The temperature tolerance of a furnace wiring harness depends on the specific materials used in its construction. These wire harnesses are specifically engineered for high-temperature environments（including applications subject to rigorous thermal cycling) to ensure continuous and stable operation. Silicone-insulated wires can withstand temperatures up to 200°C, PTFE-insulated wires up to 250°C, and fiberglass-insulated wires up to 450°C or higher.
Different heating furnace areas have different wiring harness requirements. The materials used for the heating furnace wiring harness vary depending on the temperature range it operates in. At the same time, it also depends on the electrical load conditions, such as current and voltage, as well as the working environment conditions, such as high temperature and vibration. The power supply requirements and other conditions determine the selection of the appropriate wiring.
Ordinary wiring harnesses are usually made of PVC and are suitable for normal-temperature environments. However, when used in a long-term high-temperature environment, such as an electric heater, ordinary wiring harnesses are more prone to aging and hardening.
The heating furnace wiring harness has excellent high-temperature resistance, usually made of Silicone wire, PTFE wire, Fiberglass sleeving, and can withstand high temperatures up to over 250 degrees Celsius.
Compared with ordinary wiring harnesses, the thermal cycling stability of heating furnace wiring harnesses is also stronger.
Yes, our boiler wiring harnesses have passed UL product safety certification, RoHS environmental certification, and REACH certification. Furthermore, our factory holds ISO 9001 quality management system certification, making us a trustworthy supplier of wiring harnesses. In addition, we offer free samples and conduct tests on them, issuing test reports.