Put a fan next to a wall, aimed downward. The intention is to get circulation going. Once you have it started, blowing hot air down, cold air will mix with the warm air and stabilize the room air temps.
Creating a cross breeze with fans is the best way to circulate cooler air and push hot air out. Find the coolest part of your house (either the coolest room or outside air from a window in the shade) and angle the fan towards the hottest part of your house.
Blocked vents, closed doors, or a malfunctioning HVAC system can impede air circulation, causing heat to build up in your room.
Open windows on opposite sides of the house to take advantage of natural airflow patterns and create cross-ventilation. This air flow pushes hot air out and lets cooler air in. To enhance the effect, put fans in the windows during the night to pull in more air.
For starters, you can cover windows with an awning, shutters, or insulated curtains. In addition to installing an oversized ceiling fan or using floor fans, you can also try energy-efficient lightbulbs or heat-proofing your bed.
Common issues like leaks, disconnections, or obstructions within the ducts disrupt the flow of cooled air, causing rooms farther from the HVAC unit to suffer the most. In some cases, inadequate insulation of ducts can allow heat to infiltrate, further exacerbating the problem.
A powerful fan draws cooler early morning and evening air through open doors and windows and forces it up through the attic and out the roof vents. This sends hot air up and out, cooling your house and your attic.
The warmer portion of this air will naturally rise to the top floor, so place a window fan up there, too—on the other side of the home, facing out—to expel the heat. To assist the process, put standalone fans, ones that are capable of tilting, on the lower levels, pointing upward if possible.
If it's safe to do so, open doors and windows as much as you can to bring in fresh, outdoor air. While it's better to open them widely, even having a window cracked open slightly can help. If you can, open multiple doors and windows to allow more fresh air to move inside.
By changing your ceiling fan direction to clockwise, its blades can push that warm air down towards the floor. It also brings the cool air from the floor to the ceiling. When your ceiling fan is moving clockwise, run it at the lowest speed.
Ceiling fans to the rescue:
This one is a no-brainer. Ceiling fans help circulate the air in the room. The fan helps the cool air move downwards and the breeze helps to displace the warmer air around the skin and makes you feel cool.
If your bedroom is too warm, as it can be in summer, then this can increase your body temperature. View Source and disturb your sleep. You are more sensitive to temperatures during the first two sleep stages, and thus more likely to wake up during these stages if you feel hot.
Dirty air filter—A dirty filter restricts airflow, not letting your home get enough cool air. Closed vents—Closed vents in rooms can cause them to be hotter than other rooms. Open windows—Your conditioned air can flow out of open windows, leaving uneven temperatures in your home.
Lay the cloth over the fan. As it blows the air out, it'll circulate through the cloth and the air will feel cooler. Make sure that the cloth cannot get caught on the fan in any way at all––if this is a possibility, don't use this method. Replace the cloth frequently, as they dry out.
Materials such as concrete, bricks and tiles absorb and store heat. They are therefore said to have high thermal mass. Materials such as timber and cloth do not absorb and store heat and are said to have low thermal mass.
Draw in Cool Air, Expel Hot Air
You can cool a room with just one window and one fan. Place a box fan in the window or a pedestal fan within 5 feet of the window. When the air is cooler outside than it is inside, point the air so it blows into the house.