Use Fans the Right Way
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.
Place a fan near an open window to draw in cool air from outside. You can also use a ceiling fan or standing fan to improve air circulation within the room. During the day, keep windows, curtains, blinds, or shades closed to prevent direct sunlight from entering the room. This helps reduce heat buildup.
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.
Blocked vents, closed doors, or a malfunctioning HVAC system can impede air circulation, causing heat to build up in your room.
Home Damage Caused by High Heat
Hardwood flooring is especially susceptible to heat damage. Drywall: Drywall will expand and contract in high heat. This leads to cracks and eventually warping and buckling. Foundation: The soil around your home can become so dry that your foundation shrinks.
Exhaust out the hot air.
Open windows on the upper floor with a box fan blowing out, and open windows on a lower floor—the warmer air on the top floor will be ventilated out, drawing in cooler air below.
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.
Despite running your air conditioning system, you may still find hot spots in certain rooms of your house—particularly in large rooms or in multi-story homes. This problem can be caused by a variety of factors, such as insufficient insulation, a damaged AC system, or ventilation issues.
To make a room cooler, get the air circulating by turning on a ceiling or box fan and then force the hot air out of the room by opening a window or door. Too much heat and humidity can make a room feel stuffy and uncomfortable.
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.
Simple Fixes You Can Try
Using fans to improve air circulation, opening windows during cooler hours to let heat escape, and switching to LED light bulbs, which produce less heat, can all help cool down a room. If you find yourself asking why your room is so hot, consider these common causes and solutions.
To cool down a room without AC, make sure to use window fans, ceiling fans, or tower fans. Keep your room cooler all day by covering windows to prevent heat from sunlight coming in. You can also reduce humidity, block air leaks, and ventilate out hot air to cool your entire home.
Extract that heat away
Extractor fans or exhaust fans are not only good at removing steam and odours, but they can also get rid of unwanted heat. This works best when you leave all of the doors in the house open to try and remove hot air from each room.
In general, 80 degrees is too hot for a house if people are inside. However, if people aren't home during the day or for vacation during the summer, an indoor temperature of 80 degrees can save energy until you return and lower the temperature.
Cooling a house from 90 degrees to 72 degrees typically takes about 2 to 4 hours, depending on various factors.
An influential limit. After an influential study in 2010, climate researchers often use a wet bulb temperature of 35 degrees C — roughly equivalent to 95 degrees F at 100% humidity — as an upper limit for human survival and adaptability without cooling.
First, if you also have forced air, turn the fan on to help circulate heat. Make sure your ceiling fans rotate clockwise so they pull cool air up off the floor and push warm air down. And also keep them running at their lowest speed. If you don't, you'll simply feel the chill from the cool breeze they create.