Are DC fans quieter than AC fans?

Asked By: Vishal Tarife | Last Updated: 23rd June, 2020
Category: home and garden home appliances
4.2/5 (343 Views . 24 Votes)
The new technology in the motors means that DC fans are generally much quieter than AC motors. DC fans use up to 70% less energy than an AC fan. DC fans are generally faster to respond to the remote control, have more speed options and have the reverse function on the remote.

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Likewise, what is the difference between AC and DC motors in ceiling fans?

AC means alternating current and DC means direct current. The difference between the two is in how the motors handle the electrical current they receive from the wiring in your ceiling. AC motors use the supplied power from your electrical wiring directly, regulating speeds by controlling the frequency of the current.

Subsequently, question is, which motor is used in fan AC or DC? Alos, talking about mixers used in our houses do use a motor, which can both run on ac and dc as it being a universal motor. But when talking about Indian Railways, the fans used there runs on dc nowadays. They are termed as BLDC(Brushless DC fan). Because in trains, the distribution of power is in form of DC.

Just so, which ceiling fan is quietest?

To help you choose, I've compiled a list of some of Ceiling Fan Direct's quietest fans.

  • Aeration 3 Blade Designer Eco Efficient Ceiling Fan. This unique fan makes almost no noise.
  • Martec Lifestyle Ceiling Fan.
  • Hunter Carera Three Blade Ceiling Fan.
  • Martec Envirofan T6 Ceiling Fan.
  • Swift Ceiling Fan With Timber Blades.

Are DC Motor Ceiling Fans quieter?

DC Motors: Ceiling Fans with DC Motors use the latest technology and run cooler and quieter than conventional AC ceiling fan motors because they have permanent magnets that do not generate ANY electrical buzz. Almost every fan on our site that has a DC motor will have a quality rating of 5.

36 Related Question Answers Found

Are AC or DC fans better?

The new technology in the motors means that DC fans are generally much quieter than AC motors. DC fans use up to 70% less energy than an AC fan. DC fans are generally faster to respond to the remote control, have more speed options and have the reverse function on the remote.

Are DC fan motors better than AC?

DC fans are widely regarded as the most efficient type of fans. They consume significantly less power than AC fans. In fact, DC fans consume up to 70 percent less energy to produce the same output as traditional AC fan types. This means, that a 25-watt DC-driven yields the same results as 100-watt AC fan.

Can a DC fan run on AC?

There are no specific working of either DC or AC. Motors are designed on both the supply and based on consumers usage, cost, speed torque ratio and smaller sizes they are build. Most of the fans which you see in home(Ceiling fans) work on AC supply.

Why are DC motors better than AC?

DC motors have the advantage of: higher starting torque, quick starting and stopping, reversing, variable speeds with voltage input and they are easier and cheaper to control than AC. AC motor advantages include: lower power demand on start and minimal maintenance.

How is AC converted to DC?


A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification, since it "straightens" the direction of current.

What is a brushless fan?

The brushless DC fan is a combination of a powerful BLDC motor, shaft, and fan blades. These fans are durable, reliable, and highly energy efficient. They do not produce sparks in the circuit and operate noiselessly.

Which is the best fan for home?

  • Crompton HS Plus (Best Ceiling Fan Overall)
  • Atomberg Gorilla Fan (Best BLDC Ceiling Fan)
  • Orient Ecotech Plus (Best Popular Brand BLDC Ceiling Fan)
  • Havells Pacer (Best Non-Energy Efficient Ceiling Fan)
  • Crompton Aura (Best Decorative Non-Energy Efficient Ceiling Fan)

Is a 3 or 4 blade fan better?

So, it is ideal to find three blade ceiling fans for optimum airflow that works with lesser friction. In this case, the motor load is also manageable, and you are protected from unnecessary noises. While having four blades might improve the aeration, it can increase the amount of load on the motor.

Are 3 or 4 blade ceiling fans better?

There is not a great deal of difference between the performance features of a 3,4 or 5 bladed fan – so it's about the fan design you prefer. Though with 5 blade fans these will usually require a larger motor to rotate the blades and larger motors generally means higher energy consumption.

Is a ceiling fan worth it?


An air conditioner costs $0.36 per hour, and a ceiling fan only $0.01 per hour. If air conditioning costs are lowered even by a few cents per hour, fans could still be worth it. On average, ceiling fans can help save four to eight percent on cooling costs when combined with an air conditioner.

Are 3 blade ceiling fans any good?

Many believe that the more blades your fan has, the cooler it is, but it isn't secret that industrial style and commercial fans usually only have two or three blades. Why is this? When a fan has fewer blades, there is less drag on the motor and it can go faster and move more air more efficiently.

How many blades are best on a ceiling fan?

Blade pitch is one key factor that affects how much air a ceiling fan can move. Falahat and his team in 2011 found that four blades was the optimum number of fan blades, and these blades should be tilted between 45 to 55 degrees, as shown in this chart.

How do I choose a good ceiling fan?

The more space between the ceiling and the blades, the better for air flow and circulation. Ideally, aim for at least 12 inches. Low Ceilings: For rooms with ceilings eight feet or shorter, flush mount fans like the Cirrus Flush Mount Ceiling Fan from Modern Fan Company are the ideal option.

What makes a good fan?

Ceiling Fans
They're the biggest fans you'll find, which makes them perfect for cooling large spaces, but sizing them right is important. A typical small bedroom should have a 36" to 42" unit; a typical master bedroom needs a 44" fan; and living rooms or other large spaces require something in the 50" to 54" range.

What ceiling fan moves the most air?


A flush-mount ceiling fan with a high CFM will move the most air for you. You'll want to look for a high-flow model that has a 7000 CFM rating at minimum if you want a lot of air movement in your room.

Which current is used in fans?

A fan will either be powered using alternating current (AC) or direct current (DC), and each current has a different set of voltages (V). An alternating current fan will have a voltage rating above 100 such as 110V or 240V. In contrast, a direct current fan will have a lower voltage rating such as 5V or 48V.

Why capacitor is used in fan?

So in general capacitor is used for p4oviding starting torque or starting rotation to single phase motor., because for rotation any equipment in magnetic field we require phase difference but in single phase motor only one phase use so we connect capacitor in starting winding by this phase difference generate and our