DC fans use direct current (low voltage), while AC fans use alternating current (high voltage).

By changing the voltage or using PWM (Pulse Width Modulation) signals.

Yes, but it requires a frequency converter or speed controller.

Yes, DC fans are generally more energy-efficient and operate with higher efficiency.

Yes, due to its simpler structure, an AC fan is typically more durable, but its lifespan depends on the application environment.

Yes, DC fans run more smoothly and support speed control, resulting in lower noise levels.

Yes, standard AC fans typically run at a fixed speed.

By measuring CFM (Cubic Feet per Minute) or m³/h (Cubic Meters per Hour).

Static pressure refers to a fan's ability to overcome airflow resistance, making it suitable for high-resistance applications.

Yes, DC fans support finer speed and temperature control.

Yes, higher speeds can shorten a fan's lifespan.

Choose low-noise fans, optimize the installation environment, or adjust the speed.

AC fans typically have a higher startup current, whereas DC fans have a relatively lower startup current.

Most fans use maintenance-free bearings and do not require additional lubrication.

The common types are ball bearings and sleeve bearings. Ball bearings have a longer lifespan, and MEAN WELL uses ball bearings.

Typically -20°C to 70°C, but it varies by model.

The smart control fan features a built-in control module that can automatically adjust its speed based on temperature or load.

Common DC fan voltages: 5V, 12V, 24V.
Common AC fan voltages: 110V, 220V. MEAN WELL offers DC 12V and AC 110V / 220V models.

DC fans are suitable for electronic devices, servers, automotive cooling systems, and portable devices.

AC fans are ideal for industrial machinery, HVAC systems, and household appliances.

Yes, they are highly suitable due to their low power consumption.

Yes, but you need to select models designed for high-temperature resistance.

We recommend compact DC fans or slim-profile fans.

Yes, their low power consumption and lightweight design make them ideal for mobile applications.

Yes, especially high-static-pressure fans.

Select high-airflow, low-noise DC fans based on the server's power consumption and cooling needs.

Yes, AC fans offer stable operation, making them ideal for high-airflow applications.

Choose fans with waterproof ratings (e.g., IP55).

Yes, their low-vibration design makes them highly suitable for precision instruments.

Yes, they can guide and isolate hot and cold airflow.

Yes, they are designed for stable and continuous operation.

DC fans are commonly used in automotive air conditioning and cooling systems.

Choose high-airflow, high-efficiency AC or DC fans.

Yes, but cooling efficiency may be affected by air pressure.

Yes, fans with moisture-resistant designs should be selected.

Yes, high-static-pressure fans provide stable airflow.

Yes, they are suitable for cooling inside wind turbines and other renewable energy equipment.

Common sizes include 40, 80, 120, 172, and 200 mm.

Ball bearing fans have a lifespan of over 50,000 hours, while sleeve bearing fans have a slightly shorter lifespan.

DC: 5V, 12V, 24V
AC: 110V, 220V, 380V

Additional inquiry is required (LINK). Common waterproof ratings include IP54 and IP65.

Typically 20-50 dB, depending on speed and design.

Yes, specially designed for low-noise applications.

Yes, for customized service, please contact us (LINK). customization is available based on size, voltage, and airflow requirements, but there is an MOQ (Minimum Order Quantity) limitation.
 

Typically between 200g and 800g, depending on the model.

Usually between 2550 to 15,000 RPM, depending on the model.

Please refer to the  Selection Guides: AC Fan (LINK)and DC Fan (LINK). Compliance varies by model, meeting standards such as CE, UL, TUV, and ROHS.
 

MEAN WELL fans use ball bearings.

Supports screw mounting.

Common materials include plastic or metal (e.g., aluminum alloy).

The warranty period is typically 2 years.

Yes, an installation manual is provided, and some brands offer technical support.

It depends on the extent of the damage, but most fans are replaced rather than repaired.

Please contact after-sales support (E-mail:info-pnpt@powernex.com ) to check for bearing damage or improper installation.

You can check via the product serial number or the official website→Product→AC Fan (LINK) and DC Fan (LINK) Selection Guides.

Please contact technical support(E-mail: info-pnpt@powernex.com) to check for voltage issues or control signal problems.