Summer heat can be a blast on vacation, but when it settles into your home, it can feel like a real challenge. The stuffy air can make it impossible to sleep, and while air conditioning is a great solution, not every home has it—and the energy bills can be a major turn-off. The good news is that you can effectively lower the temperature in your home without any expensive gadgets. Here are some simple and efficient ways to keep a house cool without AC when the mercury rises.

1. Keep the Sun Out

To prevent your home from turning into a greenhouse, close your blinds or heavy curtains in the morning. If you need some light, choose lightweight, blackout fabrics that will block direct sunlight. This simple step stops the sun’s rays from heating up your windows and the air inside your rooms.

2. Master the Art of Proper Ventilation

Open your windows in the morning when the air outside is still cool. Ventilate all your rooms for 10–15 minutes, then close everything up tight until the evening. At night, when the temperature drops, open your windows and doors again to let in the fresh, cool air. If the wind outside is hot, it’s better to keep your windows closed, even at night.

3. Create a “Wind Tunnel”

Open windows or balcony doors on opposite sides of your home to create a cross-breeze. This will quickly refresh the space. If the air flows through a narrow hallway or between rooms, it creates a “wind tunnel” effect, which makes the cooling even more effective.

4. Change Your Textiles

Swap out heavy curtains for light-colored, airy ones. Remove thick carpets and other fabric items that absorb and hold heat. You should also replace heavy bedding with thin, breathable sheets and blankets. A little life hack: periodically mist your curtains with a spray bottle of water—the evaporation will help cool the air.

5. Cool Down Your Floors

Before you go to bed or relax in a room, give the floor a quick wipe-down with cold water. As the water evaporates, it will draw heat from the air, creating a subtle cooling effect.

6. The Fan + Ice Trick

To make your fan do more than just circulate warm air, place a bowl of ice and a pinch of salt in front of it. The fan will blow a pleasant, cool mist of air across the icy surface, creating a DIY air conditioner.

7. The Power of Plants

Houseplants with large leaves don’t just look good—they also naturally humidify and cool the air. Water them in the evening for the best effect. On your balcony or patio, arrange more plants to create natural shade and prevent heat from building up.

8. Leverage Temperature Differences

If you have cooler areas in your home (like a basement) and hotter ones (like an attic), open the doors between them to allow the air to mix. This can help lower the overall temperature throughout your house.

9. Less Tech, Less Heat

Household appliances generate heat even when simply running. Try to unplug unnecessary devices, avoid using the oven, and opt for meals that don’t require long cooking times. Don’t leave your computers, TVs, and other gadgets on when you’re not using them.

10. Don’t Forget About Lights

Lamps, especially halogen ones, can significantly raise the temperature in a room. Use natural light during the day and switch to energy-efficient LED bulbs for the evening.

11. Increase Humidity

Place bowls of cold water and ice around your rooms to increase humidity and slightly lower the temperature. A humidifier is an even better option if you have one.

By combining several of these methods, you can create a comfortable indoor climate even without air conditioning. It’s a cost-effective, eco-friendly, and healthy way to beat the heat.