Using Window Fans for Home Cooling Electric fans can be an inexpensive, Earth-friendly alternative to supplement or even replace air conditioning. The best application for window fans is during times and seasons when it is hot during the day and cool and dry at night. The object is to cool your home with window fans during the night using outside air, which can delay or even eliminate turning on the air conditioner during the night, when window fans are in use. This method can also be helpful in areas subject to power outages, as it uses electricity at night during peak usage during the day. Follow the guidelines below to use window fans for home cooling. Assess whether your situation is suitable for this cooling method. If the temperature is uncomfortably hot and/or humid during the day and night, this method is not suitable for you. If this is only the case during the daytime, a window fan can be successfully used to lower the temperature during nighttime hours.

If you live in a very polluted area, using a window fan will draw this pollution in. Window fan ventilation is not recommended for those who do not have enough window space, as insects or animals can enter through open windows. Cockroaches and other small insects often crawl through window openings, so be prepared to accept this or have them use this method. In high crime areas, windows accessible from the outside are also likely to be used as entry gateways by criminals. Although fan noise can mask some of this, noises outside the house will also be louder inside with the window open.

Choose your fans. Ideally, each fan should be the largest that will fit inside the window. Stay away from fans that are too big for the window, as they are positioned outside the window frame, next to the window, leading to frequent falls. Your home should have an even capacity, blowing outward from the outside and inward from the inside (smaller, less powerful fans should be counted as part of one fan for calculation purposes). If you have an unbalanced, unequal capacity, it is better to blow more inside, because it creates a slight positive pressure inside the house, which prevents dust and insects from being carried in and stops the "bad air" when the doors are opened. Decide on the placement of window fans. This will also determine which fans will blow inwards and which will blow outwards. There are many considerations here: Blow inwards on the coolest sides of the house. This will usually be the sides in the shade. Rather than fighting the wind, work with fans facing in the same direction as the wind, the prevailing wind direction.

On days when the wind is strong enough, you may not even need fans. On a single-story plane, arrange the fans by blowing inward on one side of the house and outward on the other, opening them between the doors for maximum airflow. For multi-story homes, another option is to utilize the fact that the ceiling rises to help with airflow by blowing cool air to the lower floors and warm air from the upper floors, including the ceiling itself (or the ceiling itself).

Avoid placing it near garbage bins or parking lots where smoke and odors can enter the house. If pollen is not a problem, air intakes near trees or plants often provide fragrant air. Fans blowing inwards towards the fridge/freezer can blow cold air out faster than normal (when on), thus increasing the load on the appliance, so you can avoid this. Keep in mind that a fan blowing inwards can ruin loose wallpaper, so avoid it in areas like a home office or secure all paper first. To avoid water damage, avoid placing inward-blowing window fans over valuable items such as an antique desk or an expensive oriental rug. Not only do rooms with fans blowing inward appear cooler (due to increased circulation), but they also cool faster than rooms with fans blowing out. Place fans in windows.

Close as tightly as possible around the fan to keep the glass in place and prevent local circulation. Local circulation is where the same air is blown through the fan, then back around the fan and sucked in again and again, repeating indefinitely. This only results in the motor heating the air. Mask window openings adjacent to the fan. If the fan is blown inwards, the air will want to go out around the fan due to a localized pressure increase. Placing curtains or paper next to the fans will usually work well in this situation, as suction will be drawn through the window area. Fans blowing outwards are more difficult to mask because the air around them will want to be blown inwards. You can place paper or cardboard outside the window, where accessible, or tape it inside.

Or, in this case, you can choose to skip masking and instead use the lower efficiency