If you are considering buying a window fan, then you should find this article really helpful. We have put together a top 10 list of these by actual buyer ratings and put in a table which you can find below. We have also included some reviews.
Before you buy though we would recommend reading the buying guide below so as you get exactly the right fan for your home.
How Does A Window Fan Work?
The principle behind a window fan is pretty simple. They work in one of two ways:
- They either pull in cold air from the outside or,
- Draw hot air out of a room and push it outside
That is decided by whichever way the fan is actually facing. If you have for example two windows in a room, you can create a great effect, and a nice cooling breeze, by having one pulling the air in, and the other pushing it out.
These type of fans work best in windows that face a prevailing wind. A prevailing wind is simply the wind that blows predominantly in a certain direction. A sheltered window for example would be useless for a window fan as ideally it should have the wind blowing against the window.
Where Are the Fans Placed?
The best way to think of this is that most people simply open a window to allow some fresh air into a room. It is nice to have a clean and fresh room. Sometimes though that just isn’t enough. That is when placing a fan on your window sill can help draw the cooler air in from outside, and push it in to your house. It is a great idea as long as you don’t live close to a fish market of course.
The ideal placement is to have these on the cool side of hour house where the shade is. If they face out to a flower garden this can draw in a pleasant aroma, as long as no-one suffers from hay fever of course. Single story homes work best if you have the inward fans on one side and the outward fans on the other side. Don’t forget to leave some doors open to allow the air to flow through.
Why Use A Window Fan?
The main reason people go for one of these is that is a heck of a lot cheaper than running air conditioning. Window fans are an economical and energy-wise way to cool your home, and keep it feeling fresh and clean. Wise and thrifty home owners may also use these to supplement air conditioners. If you can get their placement correct, you can actually do away with expensive air conditioning.
Which Size Should You Buy?
To make them as efficient as possible, each one that you buy should be the biggest size available for that window. I would also recommend that you consider the noise level they make, and how much electricity they use as well.
The Most Effective Way To Use Them
In our business we have seen a lot of these being used over the years. In all honesty, most of them are used incorrectly. The best way of using these is to use them at night to bring the cool air inside and during the day to push hot air outside. To achieve that you need a balance between the fans pushing air out and fans bringing air in.
Windows To Avoid
Now I mentioned the fish market earlier but even around the home there are windows that you should avoid. If you plan on drawing air in from the outside, then a window that faces out on to a garbage area, a garage or car port, or anywhere smells or fumes should be avoided.
If the air at night times where you live is just too hot or humid, or you suffer from pollution then don’t waste your money on these as they will just not work.
Never leave you window fans in the windows during a rainstorm, as this can lead to serious water damage, and potential electrical damage as well.
How To Install A Window Fan
Below is a video on the top 10 video fans
Installing these can get a little tricky, though they are not impossible to do by yourself. You do however need to know exactly how to install these for them to work effectively. If in doubt it is really worth paying an expert to get this done properly. As I have mentioned make sure that you buy the right size of fan that will suit the room that you want to cool.
You will also need to measure the window and look for the fan that offers the best fit. Take the inner measurements of the window as that is where it will be fitted. You also need to consider the wind direction outside of your home. Remember these fans will either expel air out of your home, and/or draw air in from outside.