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10 Best Window Coverings To Keep Heat Out 2025 in the United States

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Our Top Picks

#1

Winner

GoDear Design 99.99% Blackout Adjustable Sliding Panel Track Blinds for Sliding Galss Doors 45.8"- 86" W x 96" H, Extendable Vertical Blinds, Trimmable Natural Woven Panel, Bali Cottages

Rating
10.0
Chosen by1,213
Opacity

Most important from
1531 reviews

Opacity
The blackout function of the panels is excellent and even provides some sound reduction.

The GoDear Design 99.99% Blackout Adjustable Sliding Panel Track Blinds are designed to provide superior light blocking and insulation, making them a great choice for those looking to reduce heat and maintain a comfortable indoor temperature. Made from a natural woven blend of 40% paper and 60% poly, these blinds offer a modern and sophisticated alternative to traditional vertical blinds. They are highly effective at blocking up to 99.99% of sunlight, which helps minimize heat loss in colder months and reduces energy costs throughout the year.

Additionally, the blinds offer enhanced privacy, making them suitable for bedrooms, nurseries, media rooms, and large windows. They also protect furniture and floors from sun damage and fading. The adjustable design allows for a custom fit with a track that can extend from 45.8 inches to 86 inches wide, and the panels can be trimmed to fit your specific needs.

The blinds are easy to install with multiple mounting options (wall or ceiling) and include a cordless system, making them safe for homes with children and pets. However, it's important to note that the blinds are not water-resistant and the actual color may vary depending on your display. The product requires assembly, but it comes with all necessary hardware and detailed instructions. They are ideal for anyone looking to improve insulation and privacy in their home.

Rating
10.0
Chosen by1,213
Opacity

Most important from
1531 reviews

Opacity
The blackout function of the panels is excellent and even provides some sound reduction.
#2

INSULATION MARKETPLACE SmartSHIELD -3mm 48inx10ft ReflectiveINSULATION roll, Foam Core Radiant Barrier, ThermalINSULATION Shield - Engineered Foil

Rating
9.4
Material
Functionality
Insulation

Most important from
7334 reviews

Material
SmartSHIELD Reflective Insulation is lightweight, easy to cut, and simple to install, making it perfect for custom sizing.
Functionality
Offers reliable performance for both home and industrial applications, enhancing energy efficiency year-round.
Insulation
Raised basement area temperature by 15 degrees F, creating a stable and warm environment for seed starting.

The INSULATION MARKETPLACE SmartSHIELD Reflective Insulation roll is designed to be an effective thermal barrier, making it useful for keeping heat out. Its material is a 3mm closed-cell polyethylene foam core, sandwiched between highly reflective engineered foil on both sides. This construction ensures durability and efficiency, as it reflects 95% of radiant energy, which is excellent for heat insulation.

Moreover, the product is unaffected by humidity and moisture, making it versatile for both indoor and outdoor uses. Additionally, it acts as a sound barrier and is non-toxic, which means it won't cause irritation to the skin, eyes, or throat, making it safer to handle and install. It's also lightweight and easy to cut and clean, which adds to its convenience.

However, while it excels in insulation and ease of use, its primary function is as a radiant barrier rather than a traditional window covering. This means it may not provide the desired aesthetics or opaqueness of typical window coverings. It is best suited for spaces like attics, ceilings, walls, and other areas where robust thermal insulation is needed more than visual appeal.

Rating
9.4
Material
Functionality
Insulation

Most important from
7334 reviews

Material
SmartSHIELD Reflective Insulation is lightweight, easy to cut, and simple to install, making it perfect for custom sizing.
Functionality
Offers reliable performance for both home and industrial applications, enhancing energy efficiency year-round.
Insulation
Raised basement area temperature by 15 degrees F, creating a stable and warm environment for seed starting.
#3

CHICOLOGY Roman Shades for Windows , Window Treatments , Roman Shades , Roman Window Shades , Room Darkening Shades , Window Shades , 36"W X 64"H , Belgian Denim (Privacy & Light Filtering)

Rating
9.4
Color
Functionality

Most important from
3633 reviews

Color
Be careful when choosing a color; the actual shade might differ significantly from what is advertised.
Functionality
They open and close very easily and are easy to maintain, even if they get dirty during installation.

The CHICOLOGY Roman Shades in Belgian Denim are a stylish and practical choice for various rooms. These shades are made from polyester, which is a durable material. The Belgian Denim color offers a modern look that can complement different interior styles. In terms of opacity, these shades are designed for room darkening, which means they provide excellent privacy and block out a significant amount of light. However, they are not entirely blackout shades, so some light may still filter through, which might not be ideal for those looking for complete darkness.

These shades do not require batteries and come with a cordless control type, making them safe around children and easy to operate. They are also easy to install and come with the necessary mounting hardware for both inside and outside mounts. While they offer good insulation to keep heat out, they are not water-resistant, so they may not be suitable for areas with high moisture. The shades are easy to maintain, requiring only light dusting or spot cleaning.

These Roman shades are a solid option for adding style and some level of light filtering and heat insulation to your windows, but they may not be suitable for rooms where complete darkness or maximum privacy is required.

Rating
9.4
Color
Functionality

Most important from
3633 reviews

Color
Be careful when choosing a color; the actual shade might differ significantly from what is advertised.
Functionality
They open and close very easily and are easy to maintain, even if they get dirty during installation.

Buying Guide for the Best Window Coverings To Keep Heat Out

Choosing the right window coverings to keep heat out is essential for maintaining a comfortable indoor temperature, especially during hot weather. The right window coverings can help reduce heat gain, lower energy bills, and protect your furniture from sun damage. When selecting window coverings, consider factors such as material, color, and functionality to ensure you get the best fit for your needs.
MaterialThe material of the window covering plays a crucial role in its ability to block heat. Heavier materials like blackout fabrics, thermal curtains, and cellular shades are excellent at insulating and preventing heat from entering your home. Lighter materials like sheer curtains may not be as effective. If you live in a particularly hot climate, opt for materials specifically designed to reflect sunlight and insulate against heat.
ColorColor affects how much heat a window covering can block. Lighter colors reflect more sunlight and heat, making them more effective at keeping your home cool. Darker colors, on the other hand, tend to absorb heat, which can make your space warmer. If your primary goal is to keep heat out, choose window coverings in light or reflective colors.
OpacityOpacity refers to how much light can pass through the window covering. High-opacity coverings like blackout curtains or shades can block nearly all sunlight, providing maximum heat reduction. Medium-opacity options like lined curtains or blinds can still offer significant heat reduction while allowing some natural light. Low-opacity coverings like sheer curtains provide minimal heat reduction. Consider your need for natural light versus heat reduction when choosing the opacity level.
FunctionalityFunctionality includes how easy the window coverings are to use and adjust. Some coverings, like motorized blinds or shades, offer convenience and can be adjusted with a remote or smartphone app. Others, like traditional curtains or manual blinds, require more effort to open and close. Think about how often you'll need to adjust the coverings and choose a style that fits your lifestyle and preferences.
InsulationInsulation refers to the window covering's ability to prevent heat transfer. Cellular shades, also known as honeycomb shades, are particularly effective at insulating because their unique structure traps air in pockets, creating a barrier against heat. Thermal curtains also provide good insulation. If insulation is a top priority, look for window coverings specifically designed to enhance energy efficiency.
UV ProtectionUV protection is important for preventing sun damage to your furniture, flooring, and other interior elements. Some window coverings come with a UV-blocking layer that can protect your home from harmful rays. If you have valuable or sensitive items near your windows, consider coverings with high UV protection to prolong their lifespan.

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