Simple. Add a ducted fan to transfer some cool air down to the ground floor, then convection to bring it back up (via the stairway).
The reason for this is simple. Top floors are the direct and primary recipient of sunlight. As the sun moves overhead during the day, these floors heat up cumulatively and the indoors face the consequent high temperature.
Proper wall insulation can significantly limit this heat transfer, helping to keep your upstairs cooler. Again, creating an air seal and sealing the home's building envelope can help you maintain a constant, comfortable temperature throughout.
According to the laws of physics, warmer air rises. So, in its natural state, with no air conditioning, your home would almost always be warmer upstairs than downstairs. In a taller, two-story home, that constant battle with nature can make an air conditioners job a bit more complicated.
When water evaporates, it absorbs heat from its surroundings, cooling the surface it comes into contact with. So, by wetting your roof, you're essentially using evaporation to lower the temperature of the roof's surface and, in turn, the interior of your home.
False ceilings use insulation materials like fibreglass or foam, which act as barriers to heat transfer between the top floor and the roof.
Using Ceiling and Window Fans
For ceiling fans, set them counterclockwise so that they are pushing air straight down. Then, increase speed on the hottest days. You can also install window fans. If you have multiple windows upstairs, window fans are a great option for ventilation and cooling.
If you're facing this issue, there could be several reasons for it, including outdated air conditioning systems, blocked vents, dirty filters, leaking air ducts, or inadequate insulation.
Install an Attic Fan — Similar to insulation, this addresses the problem of hot attics. You can cool down a hot roof with a fan. This allows for more air coming that's fresh to displace the stagnant air. This makes it easier to keep an upper floor cool as it isn't covered by a stuffy attic.
If you have any windows that get a lot of sunlight, keep the blinds closed to block out the heat. Blackout curtains work best, but any shade helps somewhat. If it's cool at night, open the windows to cool the house and then close them in the morning — try to get a cross breeze going if you can.
This problem can be caused by a variety of factors, such as insufficient insulation, a damaged AC system, or ventilation issues. Fortunately, there are ways to address these issues that can not only boost your comfort but also lower your energy bills.
Turning on a ceiling or floor fan will help you feel cooler when your upstairs is warm. Keep in mind that a fan does not act as a miniature air conditioner. It will not remove humidity and pump cool air throughout your space. However, you will feel much more comfortable upstairs with more air circulation.
Ceiling Fans
During winters, you can run the fan in reverse to push the warmer air back down into the room.
Choose materials that are resistant to moisture to prevent damage from leaks or condensation. Go for water-resistant fiberglass, cement board, tile, acrylic, and drywall to avoid sogginess.
Water sprinkled on the roof-top absorbs heat (energy) and evaporates leaving the roof-top cooler than before. Water has high specific heat because it needs to absorb a lot of energy to change its temperature.
Spraying a roof with Roof Maxx usually costs about 15-30% as much as the price of replacing the roof—but it can extend the lifespan of the shingles you already have by up to 15 years in some cases. This makes it a relatively cost-effective way to preserve the condition of your roof while improving its appearance.
When you spritz your condenser, you encourage it to evaporate the water, which helps it cool off more easily. It, therefore, needs to work less, which reduces the amount of energy it uses and the amount of burned energy you end up paying for in the long run.
Zoned systems help solve many of the issues with how to regulate heat in a two-story home. Zoned systems use electrically actuated dampers in the ductwork to redirect hot or cold air where it is needed. With a zoned system, different rooms, bedrooms, or floors of a home can be zoned to have different temperatures.
Cooler air settles into the lower areas of the house (usually where the thermostat is located); while heat from the outside begins to warm things up again. Because heat rises, the temperature on the second floor rises first, causing the second floor to feel warmer than the first floor.