Fan Is How Much Watt – But how much electricity does a ceiling fan use? How does a ceiling fan compare to floor fans, tower fans, box fans and other cooling fans you might have in your home?
To find out, I measured the power consumption of all of them and combined them all into one easy to understand guide.
Fan Is How Much Watt
My test rig for measuring how much electricity a ceiling fan uses. I wanted to eliminate ANY guesswork to get the best information possible – so I installed a 52-inch ceiling fan and plugged it in.
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Knowing that there is no substitute for hands-on testing, I wired the fan to run a power meter to see how much electricity the ceiling fan was using.
So I decided to learn once and for all. To do this, I plugged a solid 52-inch ceiling fan into the AC outlet.
I then plugged it into a high quality extension cord and used my trusty Kill-A-Watt meter to measure power consumption in watts.
I Measurements in Watts for the power consumption of ceiling fans. I really expected more force to be used, but I was wrong! In fact, a high-speed ceiling fan uses less electricity than many other low-cost fans. (Note: Only light power consumption is measured, while power consumption in watts is for three 15W LED bulbs)
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As you can see, I was very surprised to find that even at top speed (speed 3 or “high” when pulling the fan speed selection chain), a standard 52″ ceiling fan doesn’t exceed 50 watts.
The most surprising thing is how little power is consumed when set to the lowest speed: only 12 W! It’s cheaper than the air purifiers and small desk fans I’ve tried.
Basic formula for calculating fan power consumption in Amps (also spelled Ampere “A”). To find out how many amps a fan uses, we can easily find the right number if we know its power (watts) and the voltage it uses. Since the fans are “inductive” motors, things get more complicated as we have to use a power plant.
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It is not difficult to determine how many amps a ceiling fan uses. The most important thing is to know how much power the fan is using in watts and the voltage it is using. In most homes this is about 120 volts (V).
However, this is a bit more complicated as conventional ceiling fans use an electric motor powered by alternating current (AC) and magnetic fields.
Note: Some electrical testers can easily measure current if you can connect them in series to a fan. Others include the amplifier used in the spec sheet or the sticker on the fan you have.
If not, we can easily calculate it ourselves and get a relatively accurate number in seconds!
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Some modern fans use high-end designs that convert home AC power to DC via electronics built into the fan.
However, most of those sold today use a conventional induction motor. It therefore uses magnetic fields produced by the AC voltage in your home to power the fan motor.
In this case, we use the base number to boost and tune the additional amplifiers the fan draws. This is called a number.
Power factors for many common appliances, including ceiling fans. Power factor is a number that describes how much electric current is lost to the magnetic fields instead of the power used to start the motor. For example, 1 = 100% efficiency and a power factor of 0.5 means 50% additional current is required.
How Much Electricity Does A Ceiling Fan Use? A Helpful Guide For Everyone
As you can see, even at maximum speed, a typical ceiling fan uses less than 1 amp of current. Much less than you expect! (Note: This table shows the fan used with the lights off)
In fact, it is some of the electrical appliances (usually using 10-20 amps or more) like heaters.
These are rough numbers, but most standard ceiling fans should be pretty close as well. Even if your ceiling voltage is slightly below 120V AC, the output will still be in the field.
Apparently, ceiling fans use some of the electricity used by air conditioners (AC units). I measured the strength of the two and created a real, accurate graph comparing the two so you know what to expect.
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Why? Why? This is because electric fans need enough power to spin the motor that turns the blades, so do air conditioners.
I measured the power output of two watts to compare the two. For air conditioner capacity numbers, I measured the wattage of a typical small window air conditioner you would buy for your home.
As you can see, a ceiling fan uses only 12% of the power of an air conditioner installed on it.
If you’re wondering why an AC unit consumes 1.2 W when turned off, it’s because of the power required to store memory settings such as the last set temperature, other features, or controls.
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An air conditioner that uses electronic controls rather than mechanical controls typically has some circuitry that requires backup power even when the room is not cooled like clockwork.
Left: A home AC unit compressor that circulates the refrigerator using an electric motor. Right: An automotive AC compressor powered by a motor that uses a magnetic clutch to rotate the internal pistons when cooling is required.
Cooling coils are an important part of an AC system because cooling is provided by the thermal properties of the refrigerant gas (add or remove heat) when compressed.
An air conditioner must circulate a refrigerant (called “Freon”) through a pump to create these pressure differences to cool the air.
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There are several refrigerant tubes around the air conditioners (window-mounted and central systems) in your home. The compressor pumps refrigerant under pressure, which removes heat when the fan blows, cooling the air in your home. During operation, the heat from the indoor air is given to the outside.
At home and in your car, this requires a lot of power because the compressor needs a lot of power to turn the pistons inside.
Because it is under pressure (and due to the friction of its moving parts), it requires more physical effort and more electricity. When you compare a ceiling fan to an AC unit and understand the differences in their operation, it becomes clear why there is such a huge difference in power consumption.
Ceiling fans and other fans operate differently from AC systems. Instead of removing heat from the air in the room, they blow air directly onto your body and surfaces that remove heat. This creates a cooling effect.
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Ceiling fans are the best because they don’t require a heavy electrical draw like AC units. works for them
I measured the power consumption of a standard rotary floor fan at 3 speeds. I also measured the rotational and non-rotational power consumption in use.
A graph showing how much electricity a ceiling fan uses compared to a floor fan. Except for the lowest speed, they are very close in power consumption.
Both have advantages and disadvantages. For example, a floor fan is only good for very strong airflow on a small scale. However, for the same energy consumption, a ceiling fan is better to cool the room.
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Comparing the Honeywell QuietSet 5 speed tower fan to a ceiling fan is an interesting example. Note that not all tower fans use the same speed as other makes and models.
In this case, I measured the power consumption of a 5-speed tower fan. Since it is designed as a quiet room fan, the fan speed is not as high as others.
Since the speed comparison between 3 and 5 is wrong, I adjusted the low and medium speed to make it more clear.
Note: Dimensions are closed for tower furniture. In tests with this it was 19W, 20.8W, 26W, 26.3W and 27.7W. This means that the rotary motor adds 1-2W to its power.
How Many Amps Does A Ceiling Fan Use
Some models, such as the Honeywell shown above, are designed to run very quietly. This affects the amount of power consumed as the fan runs silently.
Box fans are my favorite because of the amount of white noise they can produce. This is one of its advantages over ceiling fans.
As with the other products in this post, I measured the power used by a standard box fan. What I found was interesting – they can use almost twice as much energy as a high ceiling fan.
As you can see above, the disadvantage is a
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