How Much Energy Does A Window Fan Use – Expert advice from Bob Vila, the most trusted name in home improvement, home remodeling, home repair and DIY. Tried, true and trusted housing advice
The best window fans we tested in 2022 Relax while controlling your energy bills with the right window fan for your space and budget.
How Much Energy Does A Window Fan Use
When it comes to keeping your home cool and your utility bills down, you can’t beat a window fan. These units are located under a typical window frame and circulate air to provide a breeze that uses much less energy than an air conditioner.
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We sampled the fans who made our list, walked through the facility, and heard the Wing trailer for ourselves. Many draw outside air in and allow you to reverse the action to expel hot indoor air and odors, which is why window fans can be such a huge asset in the kitchen.
While they’re hardly high-tech devices, the best cooling fans have some features that are tailored to specific tasks, so it pays to be a savvy buyer. Read on to learn what to look for in a window fan and how these criteria and our hands-on tests informed our top picks.
Keep these features in mind as you browse the wide and varied selection of window fans available today. Some fan features will be more appropriate for your location and it’s important to know that when shopping for the best cooling performance.
When shopping for the best cooling fan, it’s important to consider which of the three types is best for the job. Window fans are available in three different types: standard frame, desk, and floor.
Speed Twin Window Fan Reversible Air Cooling Indoor Water Resistant Exhaust
Standard frame: This type of window fan is designed to sit on the inside of the window between the frame and the frame. Unlike a box fan, which simply sits on the frame, a window fan installs with mounting brackets and has adjustable panels that fill the gaps on either side of the fan. These fans can also be placed with sliding windows. Some standard frame fans are vertical window fans that may have single or double blades.
Unlike other types of fan, a standard frame fan is often reversible, allowing it to act as an intake or exhaust fan or both at the same time. Because a standard frame sits inside a window, it does the best job of moving air into or out of a room.
Desk: A desk fan is smaller than a window fan, but has a base that allows it to stand upright on a flat surface, such as a desk, without having to be installed near a window. Unlike standard frame fans, which have a fixed position, desk fans have a tilt function that allows the user to straighten them up or down.
Floor: Like desktop models, floor fans are mounted on a base. They sit higher than desk fans and usually have larger blades, so they can move more air through screen doors and low windows. Like desk fans, they usually have adjustments that allow the user to tilt them up or down.
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Since a window fan is designed to fit inside a window, it should be no larger than the dimensions of the window itself. For this reason, most standard window fans can fit windows approximately 26 inches to 38 inches wide.
When purchasing a window fan, make sure you choose a model that is small enough to fit the dimensions of the window when it is open, making sure there are no large gaps around it that allow warm air to escape into the room. or allow access to the room. Bug if there is no screen in the window. Many window fans have sliding screens on the sides that cover these holes to prevent drafts around the fan and keep out insects and rain.
Window sashes consist of a casing consisting of one or two blades, protected by a grid. These parts are usually made of high quality plastic or metal.
Blades: Window fans have plastic or metal blades. Fans with plastic blades are lighter and therefore more energy efficient than metal fans. However, since plastic parts are not as strong as metal, they do not produce as much air flow.
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Metal blowers, although heavier, can withstand more stress and can therefore be equipped with larger motors that generate more revolutions per minute (rpm). As a result, metal fans can produce up to 3,500 cubic feet of airflow per hour. minutes (cfm) or more, compared to plastic fans, which are limited to about 2,500 cfm.
Grilles: All fans have a metal or plastic grill that prevents objects or hands from coming in contact with the blades. Although metal grills are more durable than plastic and can take more abuse, they are also more susceptible to rust and corrosion.
Housing: Most window fans have a housing made of durable plastic. Although not as sturdy as metal, the plastic housing helps keep the overall weight of the fan down. Plastic is also impervious to rust and corrosion, which can eventually destroy metal fans.
A fan’s airflow, an indicator of its cooling effect, measures the speed at which air moves into or out of a room. Airflow will be listed on the fan manufacturer’s website and on the fan’s packaging in cfm.
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While purchasing a fan with the highest cfm available may seem advantageous, a unit with a stronger airflow than the room warrants may only be wasting energy. It is wise to purchase a fan with sufficient airflow to cool the room where it will be installed. In general, you should expect about 1 cfm per square foot of space, plus an additional 50 cfm.
Most window fans have an intake function (to draw and circulate air from outside) and an exhaust function (to force air or odors indoors). Reversibility refers to a mechanism that changes the direction of air flow. There are manually reversible and electrically reversible fans.
Manually reversible fans require the user to physically remove the unit from the window, turn it on, and reposition it to reverse the airflow. Electrically reversible fans allow the user to change the direction of airflow at the push of a button or flick of a switch, with intake and exhaust functions at different times of the day a great convenience. For example, the intake function is useful for pulling in cool nighttime air while you sleep, while the exhaust function expels warm air during the day.
Single fan units have a large, centralized internal fan that allows for air circulation. Because single-fan units are billed as “whole house” fans for cooling the whole house, they provide stronger airflow (more on that below). That said, their larger single fan makes them overall heavier and less efficient, so it’s slower to cool a room.
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Dual fan (or “dual”) devices have two smaller internal fans side by side. They are more compact, and while they provide slightly less airflow on average, the two fans work more efficiently to cool the room faster. Bonus: In a dual-fan unit with electric reversibility and independent control of fans via two intake/exhaust switches, one fan can intake while the other set exhausts, maximizing cooling efficiency and interior comfort.
Most window fans produce between 40 and 80 decibels (dB), depending on how close you are to the fan. Standard window fans produce noise levels similar to floor fans, while desk fans with smaller blades are quieter and operate at less than 40dB. If a fan makes too much noise, the user can quiet it down by simply running the fan at medium or low speed. Note that many manufacturers won’t list fan decibels, so read reviews to get a better idea of noise levels.
Many window fans come with some handy extras and some models look better in specific rooms.
Most window fans are easy to install and maintain. Desktop and floor fans can be self-contained, eliminating the need for installation that requires drilling holes and screws.
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Most window fans fit between the sill and the window frame and must be attached to the window frame with screws to hold it firmly in place during operation. Models that come with guides can help ensure that the screws are installed properly. Other fans are designed so that the window sits on top of the unit and holds it in place. Most window fans have panels that extend from the sides to close the window opening on each side of the fan.
We’ve included floor and desk fans as well as standard frame window fans in the list of the top window fans we researched and tested below. These fans are powerful enough to create air circulation that can cool a room and have controls that make them easy to use.
This fan’s ability to function as an intake and exhaust fan combined with its multiple speed settings and powerful output make it one of the best all-around window fans on the market. Even though the Lasco runs on a single 16-inch fan versus two smaller fans, it’s capable of moving a lot more air. This
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