10 Best Window Coverings To Keep Heat Out 2026 in the United States

The Sumobaby 114"x57" Portable Blackout Curtains are designed to block out 100% of sunlight and harmful UV rays, thanks to their high-density polyester material combined with a reflective silver coating. Their deep black color enhances room darkening, making them great for bedrooms, nurseries, or media rooms where reducing light and heat is important. These curtains include hook and loop tapes for easy, drill-free installation and strong adhesion that holds up even in hot weather without slipping. They are also easy to cut to fit different window shapes, including unusual sizes like skylights or RV windows, which adds versatility. Lightweight and portable, these curtains are convenient for users who may want to move or travel with them.

Additionally, they undergo a factory treatment to ensure they are odor-free and safe for babies, which is a nice touch for families. On the downside, since they are manual curtains that attach with tapes rather than a traditional rod, some may find them less elegant or durable for long-term use. Also, spot cleaning is recommended, so maintenance might require a bit more care compared to machine-washable curtains. While they provide good thermal insulation and UV protection, the polyester fabric might not feel as soft or luxurious as heavier curtain materials.

These blackout curtains provide strong heat and light blocking in a flexible, easy-to-install format, making them ideal for those who need practical, effective window coverings without complicated setup.

The AOSKY Cordless Roller Shades are designed to block out sunlight completely with their blackout fabric made of 100% polyester and a thermal insulated coating. This material feels soft and is durable, making it easy to clean and effective in reducing heat loss or gain through windows. The white color helps keep rooms bright while still blocking UV rays, which protects furniture and reduces energy costs. The cordless design adds safety for homes with children or pets and allows smooth, adjustable positioning thanks to the spring system, which has been tested for durability.

Installation is supported by included hardware and clear instructions, including videos, helping most users set it up without hassle. However, the fabric width is slightly narrower than the overall shade size, so precise measuring is important to ensure full window coverage. The product is not water-resistant, so it’s best suited for indoor use in places like bedrooms, offices, or living rooms rather than humid areas. Adjusting the speed and stop positions of the shade requires manual screw adjustments, which might be a bit fiddly for some.

These roller shades provide strong insulation, UV protection, and a neat cordless design that fits well in many home or office settings where blackout and heat control are priorities.

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.