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The Home Depot

How Can I Cool My Attic?

Pro Referral > Home Guides > Attic > How Can I Cool My Attic?
How Can I Cool My Attic?

You know that heat rises, right? It’s the reason why your attic may tend to be too warm and your basement might be too cool. However, it’s in your best interest to keep the temperature in your entire home as consistent as you can. Not only will you feel better, it may take the heat off your wallet, too.


Keeping your attic cool doesn’t just help make your home a more comfortable place to live, it can save you money. That’s because if your attic is cooler, your air conditioner doesn’t have to work as hard to keep you comfortable in the hot summer months.

  1. 1. Insulation

    When it’s hot out, it might seem strange to think about insulation. However, this might be the perfect time to ensure that you have enough. Insulation can help make sure that the warmer air in your attic doesn’t go to the rest of your house. It can also make sure the cooler, air conditioned air being produced inside your home stays there. Experts say that homes should have a minimum of 19 inches of batt insulation (22 inches of blown-in insulation). If you find that you don’t have enough, you can tackle the job yourself. Just make sure to work when it’s cooler and make sure to wear a dust mask, goggles and the proper work clothes.

  2. 2. Radiant barrier

    According to the Department of Energy, radiant barriers “consist of a highly reflective material that reflects radiant heat rather than absorbing it.” They are used to help keep homes cool when the weather gets hot. The DOE says that these barriers can reduce cooling costs 5 to 10 percent when used in a warm, sunny climate. However, it’s really important that you have these installed by someone who knows what he or she is doing because they don’t work if they aren’t installed just right. Find a professional on The site only works with certified pros, and you can have a reasonable price quote in no time at all.

  3. 3. Types of vents

    One way to keep your attic from becoming too warm and damp is to make sure it is properly vented. Depending on the shape and size of your home, you have a variety of venting options to choose from. Mechanical attic vents run on electricity. These vents either draw air in or push it out. They are consistent, but they can also be noisy. Non-mechanical vents aren’t motorized like mechanical vents are. A few kinds of non-mechanical vents are roof vents, soffit vents, ridge vents and gable vents. Roof vents are installed on the roof. They aren’t used to take air in, only to let air out. Soffit vents help get air into the home. They are tucked into the overhang of the home. Ridge vents are for getting air out. They can be found along the top edge of the roof. Finally, gable vents are also for exhaust. They are called gable vents because they are found in the gable of a home.

  4. 4. Make sure ventilation isn’t restricted

    Whatever vents are in your home, make sure you are using them to the best of their ability. Make sure they aren’t clogged by insulation, leaves or other debris. Get up on your roof (or have an expert get on your roof) to make sure that your vents are cleared. Go inside your attic and do the same thing.

  5. The combination of heat and moisture can spell bad news for your home. Not only does it mean that you’ll spend more money on air conditioning, it could lead to harmful mold and mildew. Stay on top of the problem by inspecting your roof and vents regularly.

  6. 5. Install a Fan

    Installing an attic fan cannot only improve the functionality of your home, but it can make your home safer as well. Attic fans are a great way to save on your electric bills. Cooling off the warmest part of the house (almost always the attic) means that your home has to do less work to maintain its temperature.

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