Do Bathroom Fans Use a lot of Electricity

Do Bathroom Fans Use a lot of Electricity

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This is one of the most common questions asked by a majority of homeowners. Today, following an increase in the cost of electricity or energy at large, one question every buyer must ask himself when purchasing any electrical appliance is the energy efficiency or the cost of operation. Depending on the quality, the intention, and the type of bathroom fan you’re intending to buy, you’ll notice that the cost of electricity will vary greatly.

Bathroom fans are essential, especially for those people living in extremely hot areas. During summer, temperatures rise to unforgiving measures, making you feel uncomfortable when working or doing your daily chores. To combat such setbacks, one way is through installing bathroom fans to aid in eliminating excess humidity as well as support precise air circulation throughout the room.

Types of fans: Do Bathroom Fans Use a lot of Electricity?

The rate by which bathroom fans consume energy greatly depends on the type of fan you’re using. Unlike in the past where fans were binary, today’s units are classic and more versatile, allowing you to enjoy more options than ever before. With that being said, let’s go through a number of common bathroom fans available in the market and see how each one of them consumes electricity.

Table fan

A table fan is one of the smallest, cheapest and readily available types of fan you’ll find in the market. Designed with a base at the bottom to keep it upright, this type of fan releases short bursts of cool wind towards the surrounding area, keeping the room fresh and free from odors. Due to its small size, this fan is powered by a small capacity motor meaning it doesn’t consume a lot of electricity.

Tower fan

This type of fan is quite unique as it’s designed with the shape of a tower. Operated by a motor, this fan also allows a precise circulation of air throughout the room thus eliminating bad odors and smoke. Apart from ventilating the room, this type of fan comes with additional features that include filtration and ionization making it usable in various situations.

Ceiling/Bathroom fans

This type of fan is mostly found in bathrooms and is designed to eliminate odors, dampness, and smells. Available with a powerful fan mounted on the ceiling, this unit works by sucking out bad odors, steam, and moisture from the bathroom to the open air above. This type of fan is designed with a large motor and it’s the most expensive due to its three in one functionality (fan/warm/light).

Calculating the cost of running a bathroom fan

Back to our main question; let me mention that the rate by which bathroom fans consume electricity greatly depends on a few factors that include the size of the motor, the features, the speed settings, and how frequently the motor is used.

Electrical appliances are usually measured in watts. Each bathroom fan must have a watt rating, a voltage rating, and an ampere rating. Usually, the larger the motor, the faster it will need to spin, hence the more watts it will consume. In the table below, I will explain deeper supposing we have a three-speed fan with a maximum output of 45 watts and an electricity usage rate of 28.7c/kWh.

Fan Speed Power Hourly Running Cost Annual Running Cost
1 (Low) 4.5 Watts 0.13c $1.90
2 (Medium) 18.6 Watts 0.53c $7.79
3 (High) 45 Watts 1.29c $18.86

As you can see in the table above, the cost of electricity for a single bathroom fan is less expensive. However, the cost might increase depending on the type of fan you’re using, how long you’re operating the unit, and the additional features available in the fan.

Which is the best to consider?

After this short explanation of how bathroom fans consume electricity, I believe that you’re now fully informed on which quality to consider. Bathroom fans vary depending on the size of the motor and the speed settings. They come in different capacities and wattage ranging from 10W to 100W. For those powerful fans (let’s say 60W to 100W units), the cost of operating such a bathroom fan may cost as much as 2.87c/h which converts to about $42 per year.

Finally, for those who don’t know how to calculate the amount of power used by a single bathroom fan, this mathematical explanation will show you how to do it. 1 Kilowatt-hour (kWh) = 1000 watts. In case a fan has a 20 watts rating, the amount of electricity consumed by this fan is (20÷1000=0.02) meaning it consumes 0.02 units at its maximum speed.

Having explained all that, I will conclude this post by recommending bathroom fans to all homeowners due to their affordability and low electricity usage. Although bathroom fans are inexpensive to operate, some models may be more expensive than others due to the available features and the speed of operation.

About the Author Joe Borges