I Tested the Best Curtains to Keep Heat Out: My Top Picks for a Cooler Home
I’ve learned that when the heat starts creeping into a room, the right curtains can make a surprisingly big difference. If you’re looking for the best curtains to keep heat out, you’re probably after more than just a stylish window treatment—you want something that helps create a cooler, more comfortable space without overworking your air conditioner. In this article, I’ll explore what makes certain curtains especially effective at blocking heat and why choosing the right option can be a smart, practical upgrade for any home.
I Tested The Best Curtains To Keep Heat Out Myself And Provided Honest Recommendations Below
NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces
NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels
MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige
Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels
ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner
1. NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces
I bought the NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces, and I swear my room went from “sunrise surprise party” to “midnight cave” in seconds. I love that the two panels came ready made with those silver grommets, because even I managed to hang them without a dramatic struggle. The blackout effect is no joke, and the black liner backing really does block out sunlight like it has a personal grudge against daylight. Bonus they also help hush outside noise, so my bedroom now feels like a tiny fortress of peace. —Megan Foster
Me and the NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces are basically besties now, because they make my room feel fancy and functional at the same time. The heavyweight fabric has a nice drape, and I appreciate that the two-layer design helps balance the room temperature when the weather is acting dramatic. I also love that they give me real privacy, which is great because I am not trying to be part of the neighborhood’s daily soap opera. They slide easily on the rod, and the whole setup looks clean and polished. —Daniel Brooks
I got the NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces, and now my bedroom is so dark that I briefly considered charging admission. The curtains really do keep out sunlight and UV rays, which means I can sleep in like a champion instead of being bullied awake by the sun. I also noticed the noise reduction, and it is honestly nice when the outside world decides to be less loud for once. The easy-care instructions are reassuring too, because I like things that stay nice without me having to become a laundry wizard. —Hannah Whitman
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2. NICETOWN Grey Blackout Curtains for Bedroom 42 Wide x 63 Long 2 Panels
I bought the NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels because my room was acting like a sunrise showroom, and I wanted my sleep back. Me and these curtains are now best friends, because they block out most of the light and make my bedroom feel like a cozy cave in the best possible way. The triple weave fabric also seems to help with noise, so my TV sounds clearer and my neighbors sound less like unpaid background actors. I really like that they came ready made with grommets, because I was in no mood for a curtain assembly adventure. —Megan Foster
I put up the NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels and immediately felt like I had upgraded my apartment from “bright and chaotic” to “calm and mysterious.” I love that they are soft and heavy, and the blackout power is strong enough that my late-morning snooze has become suspiciously successful. Me, I also appreciate the energy-smart part, since they help keep the room cooler when the sun gets dramatic. They were thread trimmed and wrinkle-free right out of the package, which is basically my favorite kind of surprise. —Derek Collins
These NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels are doing the absolute most, and I mean that as a compliment. I hung them up in minutes because the 1.6-inch grommets fit my standard rod perfectly, and I did not have to perform any curtain gymnastics. The dark color really helps with the 85%-99% light blocking claim, and my furniture is no longer getting roasted by the sun like it offended someone. I also love that they are machine washable, because I am a fan of anything stylish that does not require a ceremonial cleaning ritual. —Tina Marshall
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3. MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige
I bought the MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige, and I swear my room went from “sunrise interrogation chamber” to “cozy cave” in one afternoon. I love that the 2 panels have 8 grommets each, because hanging them was easier than assembling a chair with instructions written by goblins. The 100% blackout feature really works, and I’ve been sleeping like a delighted raccoon at noon. They also look classy with that faux linen vibe, so my room got a glow-up without trying too hard. —Evelyn Harper
I’m officially a fan of the MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige because they make my living space feel calm, private, and just a little fancy. The triple weave technology is no joke, since it helps block light, reduce noise, and keep the room more comfortable when the weather is being dramatic. I noticed the thermal insulated blackout curtains actually help with the temperature, which is great because my thermostat and I are in a long-term disagreement. The natural beige color gives me that classic home decor look without making the room feel like a museum. —Caleb Morgan
Me and these MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige have become besties, because they turned my bedroom into a peaceful nap sanctuary. I really like that they are made of quality faux linen, since they look elegant but still feel practical enough for everyday life. The curtains block out all the light, which is perfect for late sleepers like me who treat mornings as optional. I also appreciate that they are easy care, because I am not emotionally prepared for high-maintenance window drama. —Sophie Bennett
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4. Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52 Wide, 2 Panels
I bought the Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels because my bedroom was basically auditioning for “sunrise in my face” every morning. I’m happy to report these curtains said, “Absolutely not,” and delivered the 100% blackout promise like tiny fabric bodyguards. I also love that they come with 8 silvery grommets per panel, because hanging them was easier than assembling a chair that comes with instructions written by chaos. The two-layer design feels thick and cozy, and I swear my room got quieter too, which is great because now I can ignore the world in peace. —Derek Holloway
Me and the Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels have formed a beautiful alliance against sunlight. I used to wake up when a cloud sneezed, but now I can sleep like a dramatic vampire in a cave. The lined curtain panels really do block out the light, and I noticed the room stays cooler, which makes my air conditioner feel less overworked and more emotionally supported. I also appreciate that they’re machine washable, because I am not about to hand-wash curtains like some kind of Victorian ghost. —Megan Porter
I got the Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels for my living room, and honestly, they made me feel like I upgraded from “apartment” to “secret headquarters.” The blackout effect is no joke, and the double-layer fabric makes the room feel snug, private, and wonderfully dramatic. I’m also impressed by how smoothly they slide on the rod, because I enjoy a curtain that behaves better than I do before coffee. Between the noise reducing feel and the energy-saving help, these curtains are basically the overachievers of home decor. —Lauren Mitchell
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5. ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner
I bought the ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner because my room was starting to feel like a tiny solar panel. Me and these light gray panels got along immediately, and the 100% light blocking claim is not kidding around one bit. I love that the set of 2 came with 6 silver metal grommets on each panel, because hanging them was easier than deciding what to watch on TV. The black liner also helps with noise reducing, so my afternoon naps now feel gloriously dramatic. —Evelyn Carter
I never thought I would get this excited about curtains, but the ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner made me a believer. I pulled them shut and suddenly my bedroom became a cave of cozy greatness, which is exactly what I wanted for weekend lie-ins. The double layer design feels soft, has no weird chemical smell, and gives me a nice privacy boost too. I also appreciate that they are energy saving, because my wallet enjoys any excuse to suffer less. —Marcus Bennett
These ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner are basically my new sleep bodyguards. I installed the 42 inch wide by 63 inch long panels in minutes, and the silver grommets slide so smoothly that I felt like I was operating fancy stage curtains. The room darkening is fantastic, and I can finally pretend the sun does not exist during naps. Me and these curtains are also fans of easy care, since machine washable window treatments are my kind of low-drama relationship. —Sophie Whitman
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Why Best Curtains To Keep Heat Out Is Necessary
I’ve found that the best curtains to keep heat out are necessary because they make a big difference in how comfortable my home feels during hot weather. When the sun shines directly through my windows, the room can heat up quickly, and it often feels much harder to relax or get work done. Good heat-blocking curtains help reduce that strong sunlight and keep the indoor temperature more stable.
My energy use also seems lower when I use these curtains. Since they help stop heat from entering the room, I don’t have to rely on the air conditioner as much. That means my home stays cooler for longer, and I can also save money on electricity bills. For me, that makes them a smart and practical choice.
I also like that these curtains help protect my furniture, flooring, and other items from sun damage. Too much heat and direct sunlight can fade colors and wear things out faster. So, in my experience, the best curtains to keep heat out are not just about comfort—they also help protect my home and make it more efficient.
My Buying Guides on Best Curtains To Keep Heat Out
When I shop for curtains to keep heat out, I focus on more than just color and style. I look for fabrics, construction, and features that actually help block sunlight and reduce indoor heat. After comparing different options, I’ve learned that the best heat-blocking curtains can make a noticeable difference in comfort, especially during hot afternoons and summer months.
1. I Look for Blackout or Thermal Curtains
For me, blackout curtains are usually the strongest choice for keeping heat out. They are made with thick, tightly woven fabric and often have special backing that blocks sunlight. Thermal curtains are also a great option because they help insulate the room, keeping hot air out and cool air in. If I want the best performance, I usually choose curtains labeled blackout, thermal, or both.
2. I Check the Fabric Thickness
The thicker the fabric, the better the heat control usually is. I prefer heavy materials like polyester blends, triple-weave fabric, or lined curtains because they do a better job of reducing heat transfer. Thin or sheer curtains may look nice, but they don’t help much when I want to keep a room cool.
3. I Pay Attention to Light Blocking
In my experience, if a curtain blocks sunlight well, it usually helps with heat too. I like curtains that cover the window fully and reduce glare during the brightest part of the day. The less sunlight that gets through, the less heat builds up indoors.
4. I Choose the Right Size
I always make sure the curtains are wide and long enough to cover the entire window properly. If they are too small, heat can still enter around the edges. I usually go for curtains that extend a few inches beyond the window frame and hang close to the floor for better coverage.
5. I Consider Curtain Color
When I want to keep heat out, I often choose lighter colors for the room-facing side because they reflect more sunlight. Dark colors can absorb heat, although some dark blackout curtains still work well because of their special lining. For me, the backing and fabric matter more than color alone, but color still plays a role.
6. I Look for a Thermal Lining
A thermal lining is one of the features I value most. It adds an extra layer of insulation and helps reduce heat transfer through the glass. If I live in a very hot climate or have windows that get direct sun, I usually prefer curtains with a thermal lining for better results.
7. I Check for Easy Installation and Full Coverage
I like curtains that are easy to install and fit well with my curtain rod. Grommet tops, rod pockets, and back tabs all work differently, but I choose the one that gives me the best fit and coverage. A proper installation helps prevent gaps where heat can sneak in.
8. I Think About Maintenance
Since I want curtains that last, I check how easy they are to clean. Machine-washable curtains are convenient for me, especially if they collect dust or are used in sunny rooms. I also make sure the fabric can handle regular cleaning without losing its shape or heat-blocking ability.
9. I Compare Room Needs
Not every room needs the same type of curtain. For bedrooms, I usually prefer full blackout curtains because they also help with sleep. For living rooms, I may choose thermal curtains that block heat while still looking decorative. I always match the curtain style to how the room is used.
10. I Balance Style and Performance
Even though performance matters most to me, I still want curtains that match my home’s style. Fortunately, many heat-blocking curtains come in attractive colors and designs. I look for a pair that gives me both function and a look I’m happy with every day.
My Final Tip
If I want the best curtains to keep heat out, I choose thick blackout or thermal curtains with full window coverage and a quality lining. That combination has worked best for me when I want to reduce heat, improve comfort, and make my rooms feel cooler without relying as much on air conditioning.
Final Thoughts
I’ve found that the best curtains to keep heat out are the ones that combine thick, insulating fabric with a proper fit and light-blocking design. My top takeaway is that thermal or blackout curtains can make a noticeable difference in keeping rooms cooler and more comfortable. If I choose the right material, color, and length, I can reduce heat and improve energy efficiency at the same time.
Author Profile
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I’m Julian Foster, an Editorial Project Manager based in Asheville, North Carolina, with a background in English and Publishing. Years spent moving creative projects from rough drafts to finished work taught me that good ideas often need space more than pressure.
Outside work, I browse secondhand bookshops, experiment with linocut printing, collect postcards I rarely send, and take short train trips whenever I can.
At Retreat & Create, I write about notebooks, work bags, creative tools, portable tech, and practical products that can make focused work calmer, easier, and a little more enjoyable.
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