The 3 Best Thermal Curtains To Keep Heat Out

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by Andrea Hannah
Originally Published: 
Best Thermal Curtains To Keep Heat Out
Bustle / Amazon

If you struggle with rooms that overheat or aggressive sunshine, the best thermal curtains to keep heat out are a smart investment, and can be a real lifesaver during sweltering summers or in consistently hot climates. In fact, they can even save you money by keeping your room colder without you having to purchase an air conditioner or fan.

What To Look For When Shopping For Thermal Curtains

While, yes, thermal curtains can reduce light by up to 90% and insulate against heat, it’s important to note that not all thermal options are alike. For the best insulation, look for a thermal curtain that has at least two layers, triple-woven fabric, and blackout technology to eliminate light and even noise. And while it may initially seem like the bigger the price tag, the better the quality, that’s not actually the case. There are plenty of high-quality curtains that are totally budget-friendly.

And, as you shop, don’t forget to keep in mind the size and length of your window. Length will be particularly important, as you want to get heat-resistant curtains that match your space requirements, and many of the options on this roundup feature curtains that come in a variety of lengths and size options.

Shop The Best Thermal Curtains To Keep Heat Out

In a hurry? These are the best thermal curtains to keep heat out:

1. The Best Overall Thermal Blackout Curtain: Best Home Fashion Wide Width Thermal Blackout Curtain

2. The Best Thermal Curtains For Smaller Windows: AmazonBasics Room Darkening Blackout Window Panel Curtains

3. The Best Patterned Thermal Curtains: HLC.ME Lattice Print Thermal Insulated Blackout Curtains

But, with so many options out there, it can be easy to get lost in the choices. That’s why I’ve gathered the best thermal curtains to keep heat out here for your consideration.


The Best Overall Thermal Blackout Curtain

These thermal curtains top the list, and with good reason. For one, they feature a thick, triple-woven lining that blocks out up to 99% of light and 100% of UV rays, keeping your home cool in even the hottest weather. They also feature antique brass grommets to keep fabric from tearing, and the curtains come in a variety of colors so you can match just about any room. And, because you can buy these curtains in an extra-wide size (up to 100 inches wide!), these are the best if you’re looking to outfit a sliding door.

One reviewer wrote: “I live in Palm Springs were the summer temps reach 120+ ,my bedroom was the ‘Hot’ room were no matter how cool the house was my room would be 10+ deg warmer. After installing these in my bedroom in front of my sliding glass door my room is now nice and cool and the same temperature as the rest of the house!!! These are awesome!!”

Available sizes: 80 x 96 inches — 100 x 108 inches (width x length) | Available colors: 17

Also available on: Walmart, $60


The Best Thermal Curtains For Smaller Windows

If you’re looking to insulate a smaller window, short thermal panels are the way to go. At under $35 for two 63-inch long panels, these curtains will fit just about any window without too much overhang, and with so many colors and sizes to choose from, it’s easy to find a perfect match. Made with triple-woven fabric, these curtains block out sunlight and UV rays. Choose from options with rod pockets or grommets.

One reviewer wrote: “The curtains work great to block the light out during the long summer days. I also use them to help keep the room cooler. The color was true to the picture.”

Available sizes: 52 x 63 inches — 52 x 96 inches (width x length) | Available colors: 21


The Best Patterned Thermal Curtains

Made with soft, thick polyester, these thermal curtains feel like velvet to the touch and effectively block out sunlight. And like all the best thermal curtains out there, the fabric is triple-woven to reduce light and noise dramatically, making them the perfect addition to any bedroom. Bonus: They’re completely machine washable, so they’re super easy to care for. If this lattice print isn’t your vibe, HLC.ME also makes thermal blackout curtains in pretty paisley, floral, and arrow prints.

One reviewer wrote: “They work great! Blocks most light, helps keep my office cool. Needs a quick steam to release the folds from packaging, otherwise they are good to go.”

Available sizes: 37 x 54 inches — 52 x 108 inches (width x length) | Available colors: 7

Also available on: Walmart, $35

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