For automotive cooling applications, choosing the right fan type can impact durability, efficiency and cost. As a professional manufacturer of automotive radiator fans, Hongjiang Electric aims to help you understand the key differences - so you source smarter and avoid surprises.
What does "brushed" actually mean?
In the context of electric motors (and thus cooling fans), a brushed motor uses physical carbon brushes that make contact with a commutator on the rotor to switch the current winding as the motor spins. In contrast, a brushless motor (often called BLDC) replaces that mechanical commutation with electronic control.
So when we talk about a "brushed cooling fan", we mean the motor inside the fan assembly has these brushes and commutator contacts; "brushless" means no brushes, fewer moving contacts, and usually more electronics driving it.
Tell Brushed vs Brushless Radiator Fan apart by photos?
For a cooling fan assembly already installed in the car, it's nearly impossible to tell just by looking at the fan blades. You need to observe the motor itself (the hub behind the fan) and its wiring.
Here are the main distinguishing features:
1. Look at the wiring connector and the number of wires
This is the most reliable external feature to tell them apart.
Brushed Fan:
Has a simple structure, usually with only 2 wires.
These 2 wires are simply the positive (+) and negative (-) terminals for the motor. It generally only has "on" and "off" states (or high/low speed adjusted by changing voltage).
Brushless Fan:
Has a complex structure, usually with 3 or more wires (e.g., 3, 4, or even 5 wires).
This is because, in addition to the positive and negative power lines, it requires extra wires to receive control signals (like PWM speed control) from the ECU (Engine Control Unit) and/or to send speed feedback signals.
2. Look at the motor housing and control module
Brushed Fan:
The motor housing (the "back" of the motor) is typically a relatively simple, smooth metal cylinder.
Due to the internal carbon brush friction, some (especially older, serviceable) motor housings might have two round caps that can be unscrewed to replace the internal brushes (but this is rare on modern sealed car fans).
Brushless Fan:
Because it relies on an electronic controller, this controller (electronic control module) is usually integrated onto the motor housing or is right next to it.You will see a "black box" (usually plastic or an aluminum casing with cooling fins) attached to the motor housing.
The wiring connector plugs into this box, not directly into the motor itself.
Simple table for quick identification:
| Feature | Brushed Fan | Brushless Fan |
| Number of Wires | 2 Wires (Positive & Negative) | 3 or More Wires (Includes power & control signal lines) |
| Motor Housing | Simpler, typically a cylindrical motor. | More complex, often has an integrated electronic control box. |
| Operating Noise | May have a slight "hissing" sound (carbon brush friction). | Runs smoother and quieter (only bearing and wind noise). |
| Part Label | No special identification. | May be labeled "Brushless" or "BLDC". |
Advantages & Disadvantages
Here is a summary table based on manufacturer notes and forum/user discussions:
| Type | Advantages | Disadvantages |
|---|---|---|
| Brushed | Lower initial cost; simpler motor and drive electronics | Shorter life (brush wear) monolithicpower.com+1; more maintenance; potentially higher noise and lower efficiency |
| Brushless | Longer lifespan (no brush wear); higher efficiency; lower noise; better control of speed/torque xtyautoparts.com | Higher upfront cost; more complex electronics; potentially more sensitive to voltage/heat conditions |
From forum user feedback:
"Brushed type fans are not dead or old technology. They work and work well. Brushless fans are very nice, albeit a little expensive."
How should you choose?
When sourcing radiator fans for workshops, distributors or automotive parts supply, consider these criteria:
Application & budget – If it's a high-usage vehicle, long-life requirement or premium market, brushless gives better return. For low-usage or cost-sensitive markets, brushed may suffice.
Installation environment & reliability – For vehicles exposed to harsh conditions, a brushless fan may deliver fewer failures.
Supplier quality & support – Because aftermarket fans vary widely in quality, choose a manufacturer that offers full testing, clear specs and either option.
Compatibility & electrical system – Make sure your fan matches voltage, connector type and control signal of the vehicle. If you upgrade to brushless, check the vehicle's control system supports it or whether additional wiring/driver required.
Why Hongjiang Electric
At Hongjiang Electric we serve global distributors and workshops with both brushed and brushless radiator fan assemblies, including our best-selling range for the Toyota Camry series(brushless type is more popular).
We have two motor production workshops, which can guarantee the production capacity of 1600 motors per day
If you're looking to stock or distribute cooling fans, or seeking a trusted manufacturer partner who offers both brushed and brushless options, let's talk.
Rotor winding machine
All the components of our products are manufactured by ourselves, and we use advanced rotor winding machines to ensure the quality of motors.
Injection molding machine
We have four injection molding machines to produce frames and fans.All the raw materials we use are new.Our company own has more than 500 molds.We can produce products at once when you need.
Dynamic balancing tester
We have the most advanced dynamic balancing tester in the market. Each product is tested before it leaves the factory to ensure its performance is qualified.