How to keep your home cool in summer: Smart, efficient tips

When the summer heat kicks in (remember those scorching afternoons and stuffy nights!), keeping your home at a comfortable temperature without sending your energy bill through the roof becomes a challenge. But, how to keep your home cool in summer? Don’t worry, we’ve got some super easy and energy-efficient ways to beat the heat—and even save money in the process.

The trick is to know how to optimize air flow, use your air conditioning smarter, and make small upgrades to help your house stay cooler, for longer. So, let’s get you the right temperature in this short read. 

Set your ceiling fans to rotate counter-clockwise

Did you know that the direction your ceiling fan spins matters? In summer, you should set your ceiling fans to rotate counter-clockwise. This pushes cooler air down and creates a wind-chill effect that lowers your body temperature, making the room feel cooler, even if you raise your thermostat a few degrees.

Block out the heat with smart window coverings

Remember, west-facing windows get the most intense afternoon sun, which can drastically heat up your space.

To minimize hot air and solar heat gain:

• Use thermal curtains or blackout shades.
• Consider reflective or energy-efficient window coverings.
• Add solar films or external shades to your west-facing windows.

Blocking the sun means your home stays cool naturally, reducing the load on your air conditioning.

Improve air conditioning efficiency

You don’t have to crank your AC to stay cool. Make your air conditioning system more efficient with these tips:

• Clean or replace air filters on a regular basis.
• Seal ducts and close leaks around windows or doors.
• Use a programmable thermostat to adjust settings based on your schedule.

And remember—upgrading to an ENERGY STAR-certified AC unit can significantly improve energy efficiency and lower your energy bill.

Embrace natural ventilation

Open your house windows during cooler hours, usually early morning or late evening, to let cooler air in.

In fact, create cross-ventilation by opening windows on opposite sides of your home. You can also use box or exhaust fans to push hot air out and draw in fresh air.

If your house cools down overnight, close the windows and blinds early in the morning to trap that cooler air inside.

Ditch incandescents for LED lights

Traditional bulbs emit a surprising amount of heat. Replacing them with LED lights reduces indoor heat and energy usage. These LED lights are cooler, last longer, and contribute to lower energy bills—a win-win during summer.

Cook smart to avoid heating the house

Your stove and oven can raise indoor temperatures fast. During particularly hot days, avoid indoor cooking if possible.

Instead:

• Use the microwave or slow cooker.
• Grill outdoors.
• Prepare cool dishes such as salads or smoothies.

You’ll be surprised to notice how this practice reduces heat buildup and helps your home stay cool.

Use window fans and exhaust fans strategically

Place window fans facing out in rooms on the sunny side of your house to push hot air out. Place fans facing inward on the shady side to pull cooler air in.

Also, don’t forget to run exhaust fans in the kitchen and bathroom to remove heat and humidity quickly.

Upgrade insulation and seal air leaks

Improving your home insulation isn’t just a winter task. Proper insulation and sealing cracks around doors and windows can help your home stay cool by keeping hot air out and cooler air in.

Focus especially on attic insulation and weather stripping for the best results.

Plant trees and use shade strategically

Landscaping can do wonders for summer comfort. Shade your home naturally by planting trees, especially near west-facing windows.

You may also consider installing pergolas, awnings, or even trellises with climbing plants. These reduce solar heat gain and keep your house cool without using extra electricity.

Create a cool zone

If cooling the whole house is too expensive, designate one room as your cool zone. Use fans, portable ACs, and energy-efficient lighting to make it a haven from the heat. And while you’re at it, use weather stripping and door draft stoppers to keep cooler air in and hot air out.

Bonus tips to stay cool without touching the thermostat

• Sleep in breathable cotton sheets.
• Keep yourself hydrated.
• Take cool showers.
• Use damp washcloths on pulse points.
• Chill your pillow in the freezer before bed.

Final thoughts

Beating the heat doesn’t have to mean blasting the AC 24/7. With smart strategies and practical tips, you can keep your home cool, reduce your energy bill, and stay comfortable all summer long.

Try combining several of the above techniques for maximum energy efficiency and cooler air. Your wallet (and body) will thank you!

FAQs: How to keep your home cool in summer

What’s the best temperature to set my thermostat to in summer?

The U.S. Department of Energy recommends 78°F (25°C) when you’re home and higher when away, to balance comfort and energy efficiency.

What steps should I take to lower my energy bill during the summer season?

Upgrade to ENERGY STAR appliances, use LED lights, block heat with curtains, and ensure your air conditioning system is working efficiently.

What’s the cheapest way to cool down a room fast?

Use a bowl of ice in front of a fan. Yes, you read right! This DIY hack creates a cooling mist effect that can drop the room’s temperature quickly, without touching your air conditioning.

Can smart thermostats really save money?

Yes! Smart thermostats adjust your home’s temperature based on your routine. They optimize your air conditioning usage, keeping your energy bill in check.

Written by Ramona Sinha. May 29, 2025

Ramona is the Senior Content Writer for Kukun. This experienced blogger uses simple and succinct words to decipher the complex phenomenon called life. She has written articles covering a broad range of topics, such as real estate, lending and mortgage, finance, business, taxation, home designs, home improvement projects, decor concepts, and more. An avid traveler, she’s a digital nomad at heart and an animal lover from the depth of her soul.