16-Inch Solar Attic Fan(ESUN40)

The solar exhaust fan is a rooftop ventilation and cooling device designed, developed, and manufactured by the Yifeng team. By combining solar panels with a ventilation system, it achieves airflow several times greater than natural ventilation alone. It is suitable for hot and stuffy environments such as residential rooftops, logistics warehouses, building pipe shafts, factories, greenhouses for agriculture, and livestock sheds.

Yifeng's patented solar exhaust fan features an integrated solar panel and fan design. The housing and fan blades are made from composite engineering plastic steel (30% glass fiber-reinforced nylon), offering excellent stability, impact resistance, high toughness, wear resistance, corrosion resistance, enhanced physical and mechanical properties, and flame-retardant surface treatment.

1. Solar-powered green energy, no need for power outlets or batteries—eco-friendly and safe.
2. Expels hot air and moisture to the outside, improving indoor temperature and freshening the air.
3. DC motor delivers high efficiency with low noise.
4. Engineered plastic steel housing is strong, durable, and typhoon-resistant.
5. Simple structure, easy to install, no wiring required, and maintenance-free.
6. Innovative air guide hood design increases airflow efficiency and effectively prevents rainwater backflow caused by crosswinds.
7. High-efficiency vortex drainage cap boosts wind speed and quickly channels rainwater away.
8. The new generation top cover features a water-blocking inner ring and drainage channels, preventing water accumulation. The solar panel is secured with embedded reverse-lock screws—no need for sealant, offering a cleaner look.
9. Built-in 100–240V wide-voltage input power supply provides stable 24V output and supports global AC mains. During cloudy days or at night when solar voltage drops below 9V, users can manually switch to mains power to ensure continuous and stable operation of the unit, protecting your environment without interruption.
10. Optional 2.4G wireless remote control system allows power on/off and speed adjustment (increase/decrease). The maximum effective range is about 20 meters (line of sight). It also supports automatic power switching when used together with item #9 for greater convenience.
11. Remote speed adjustment functions properly only when voltage is between 18V and 24V. Below 18V, speed control may not be noticeable.
12. Power on/off functions are always available regardless of voltage. Before turning off the device, please set the fan speed to maximum (press the speed-up button 12 times) for smoother startup next time.