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20 Proven Tips to Keep Your Home Cool in the Summer

Summer's intense heat can turn your home into an oven, with walls, roofs, and floors absorbing and radiating warmth. Understanding how to keep your house cool during these hot months involves more than just air conditioning—it’s about strategic insulation, smart use of materials, and efficient ventilation. Here are 20 effective strategies to maintain a cooler home and improve energy efficiency.

Understanding the Heat Factors

Insufficient Attic Insulation

During hot days, the sun's radiant heat can penetrate your roof, turning your attic into a furnace. Without proper insulation, this heat seeps into living spaces, raising indoor temperatures.

Inadequate Attic Ventilation

Poor ventilation in the attic exacerbates heat accumulation, allowing hot air to leak into your home. Proper ventilation helps dissipate this heat, keeping your living areas cooler.

Insufficient Wall Insulation

South- and west-facing walls bear the brunt of the sun, especially when under-insulated. This can lead to significant heat transfer into your home.

Air Leakage

Gaps around doors, windows, attics, and roofs can let hot air infiltrate your home, gradually increasing indoor temperatures.

Inefficient Windows

Southwest-facing windows are particularly vulnerable to heat gain. Without adequate covering, they can magnify indoor heat levels.

Insufficient Ventilation

Lack of proper ventilation can lead to stale, hot air accumulating inside your home. Ensuring good airflow is crucial for a cooler indoor environment.

20 Tips to Beat the Summer Heat

1. Use Blinds and Curtains

Windows, especially those facing north, can let in a lot of sunlight. Use blinds or blackout curtains to block out the heat and keep your living space cooler.

2. Block Heat from the Outside

Exterior shading solutions such as awnings, blinds, or large potted plants can reduce heat gain. Planting deciduous trees provides natural shade, while window tinting and ceiling insulation offer additional protection.

3. Install Air Conditioning Efficiently

Set your air conditioner thermostat to 24–27°C (75–81°F) to save energy while maintaining a comfortable indoor temperature. Use thermal cooling methods to supplement air conditioning.

4. Add Ceiling Fans

Ceiling fans should rotate counterclockwise in summer to push cool air down, enhancing the cooling effect in your home.

5. Seal Gaps

Keep doors and windows closed during the hottest parts of the day. Seal any gaps around them to prevent hot air from entering and cool air from escaping.

6. Ventilate in the Evening

As temperatures drop in the evening, open windows to let cool air in. Use fans to draw in this cooler air, reducing the heat stored in walls throughout the day.

7. Add Exterior Creepers

Planting creepers outside southwest-facing walls can provide additional shade and cooling. These plants help reduce the heat that penetrates your home.

8. Use Wet Cloths on Windows

Drape wet cloths over windows to cool incoming air. This simple method can be effective when air conditioning is not an option.

9. Install Awnings

Awnings above windows can block up to 70% of solar heat, making them an excellent alternative to planting trees where space is limited.

10. Implement Cool Roofs

Cool roofs with reflective tiles or coatings can significantly reduce heat absorption, keeping your home cooler.

11. Close Unused Rooms

Close doors to rooms that are not in use to prevent cool air from circulating unnecessarily and keep the main living areas cooler.

12. Use Window Films

Window films can reduce heat gain and come in various styles to complement your home's aesthetic. They are a cost-effective solution for cooling.

13. Install Duct Booster Fans

These fans help push cool air through ducts more efficiently, reducing hot spots in your home.

14. Switch to LED Bulbs

LED bulbs generate less heat than incandescent bulbs, helping to keep your home cooler while saving energy.

15. Insulate Key Areas

Ensure proper insulation in attics and walls to prevent heat transfer. This can significantly impact your home’s overall temperature.

16. Install an Attic Ventilator

Attic ventilators expel hot air from your attic, replacing it with cooler air from outside, which helps lower indoor temperatures.

17. Add Indoor Plants

Plants release moisture into the air, which can help cool your home. Choose plants that thrive indoors to create a cooler, more comfortable environment.

18. Plant Fast-Growing Trees

Trees like maple and poplar can quickly provide shade and reduce heat gain, creating a more pleasant outdoor environment.

19. Use Cotton Curtains

Opt for cotton fabric for curtains as it allows better airflow and helps maintain cooler indoor temperatures.

20. Install a Dehumidifier

Maintain indoor humidity levels between 40% and 50% with a dehumidifier. This reduces the perception of heat and helps keep your home comfortable.

Design Considerations for a Cooler Home

  • Incorporate water features in your home’s design to promote cooler air.

  • Position windows to take advantage of natural airflow.

  • Use reflective materials for roofs and high-performing windows to reduce heat gain.

  • Plan your landscape to include shading elements and greenery to mitigate heat.


By implementing these strategies, you can significantly reduce the heat inside your home during the summer. Effective insulation, smart use of shading, and proper ventilation are key to creating a cooler, more comfortable living environment. Embrace these tips to beat the heat and enjoy a refreshing summer indoors.


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