The Xpelair GXC9 is a single speed window fan with simple activation cord. All you need to do to turn on the fan is to pull activation cord. Its installation is also straightforward and the airflow of this model is adequate for large-size rooms.

However, we didn’t like its switch. It is not very durable and looks like it could break down quite easily. Also, this fan isn’t closed at the back, which allows the wind to blow in when the fan isn’t running.

The Xpelair GCX6 is a well-designed fan which is pleasant to look and could efficiently suck in a significant amount of air from the outside. It is also simple to operate. Its noise level of 37db is quieter than a library.

There were some drawbacks to this model, however. Unlike the Xpelair GXC9, GXC6 is not the simplest to install so we ended up spending a considerable amount of time putting it in place. We also didn’t like the fact that the flaps would prevent the fan from switching on.

The design of the Comfort Zone Cz310R features twin fans which are very powerful and provide huge amount of airflow when working together. It also has a remote control which allows to increase/decrease its speed, changes the rotation of the fan, and also regulate its power.

The main issue we noticed with the fan was with its noise. For, it is not the quietest fan. It is also quite large and does need a big window. The size also means that its assembly will take some time.

Similar to the Comfort Zone Cz310R, the Lasko 7-inch features a twin fan design. This configuration makes it very efficient in regulating the air inside the room. Also, its airflow is powerful enough to fill a large-sized room with air. Unlike the comfort zone, it runs quietly as well.

However, we didn’t like its build as this model isn’t very sturdy. Its large size means that you have to install it vertically, which means it may not work for small windows. Also, cleaning the fan isn’t easy due to its large size.

The Manrose kitchen extractor fan is very simple to install and will only take you a few minutes. It is quite powerful and effectively draws out air from the room. Operating this window fan was also very simple and due to its small size, installing it was the same.

The main drawback was the fact that unlike the Lasko 7-inch twin fan, this one is quite noisy. Also, the wind does blow into the house through the back of the fan when its not running.

The Manrose is a pull-cord operated fan which has an automatic backdraught shutter which opens/closes when the fan is powered on. Its relatively small size means you can mount it on the wall as well as on the window. It produces 62 liters of air per second and requires a 184mm glass cut window for installation.

However, we did notice that the slats take a long time to open when the equipment is running. Also, the tininess of the fitting screws might concern you about how secure they are.

Unlike the Vent-A-Matic 162mm, this one comes with a wind guard to prevent things from getting through the fan and into the house. Also, while its body is plastic, the fan is aesthetically pleasing. It comes with a diffusing rotor which keeps draught at bay and provides fresh air circulation.

Also, even when the outside air pressure is equal to that of its blades, the Vent-A-Matic would still run thanks to the inertia of its rotor.

However, we did not like how noisy it got especially during high winds and the instruction manual wasn’t very clear on how to install the fan.

The Greenwood Airvac is a well-designed machine which is easy to install. It comes with a timer using which you could pre-program the running time of this model. And its size versatility makes sure that whether you mount it on the wall or on the ceiling, it would provide equally good ventilation.

On the downside, the Greenwood Airvac does make a bit of noise. It also doesn’t seem very sturdy and the timer didn’t look long-lasting.

The Airvent 435103 features a pull-cord for operating the fan. It has a thermally activated shutter which opens in a short time when you run the fan. Also, its manufacturer recommends that you use this model either in kitchens or in large-sized rooms.

However, we didn’t like the spacing between the vents which isn’t small by any stretch of the imagination. The Airvent was also quite noisy and its construction seemed a bit flimsy.

The Xpelair DX100 is a very compact window fan which is ideal for use in bathrooms and toilets. Unlike the Manrose Primeland which had short screws, the screws on this model are quite large and provide a secure fit. Also, it operates without making too much noise.

It comes in two versions - the first of which is the standard version whereas the other contains a timer. More importantly, it IPX5 rating means you can use this fan in humid conditions as well.

On the downside, it is not the easiest to install and you have to carefully go through the manual for the same. We also did not like the timing mechanism as it was susceptible to damage.

This cord operated fan is recommended by its manufacturer to be used in kitchens, bathrooms, and average-sized rooms. It is provided with a diffusing rotor which keeps draught at bay and allows fresh air circulation.

On the downside, it is not the most silent window fan. It tends to squeak when the blades are rotating. We also didn’t like the quality of the plastic as it seemed light and easy to break.