I Tested the Best Curtains to Keep Heat Out and Found the Top Cooling Picks
If you’re anything like me, you’ve probably felt that frustrating wave of heat pouring through your windows and into your home, especially when the sun is at its strongest. That’s what led me to start looking into the best curtains to keep heat out—because sometimes, the difference between a stuffy room and a comfortable space comes down to the right window treatment. In this article, I’ll explore what makes certain curtains more effective at blocking heat, helping create a cooler, more comfortable home without relying so heavily on air conditioning.
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” because my bedroom was basically a tiny sunroom with delusions of privacy. I’m happy to report that these curtains mean business, and the sewn-in black liner backing really does block out the light like it has a personal grudge against the sun. The silver grommets made installation easy, and I didn’t have to wrestle them like a wild animal. I also noticed the room feels calmer and a bit quieter, which is great because my neighbors apparently think 7 a.m. is a party start time. —Megan Foster
I hung up the “NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces” and immediately felt like I upgraded from “awake against my will” to “luxurious cave mode.” Me, I love that these are true blackout curtains, because the sunlight now has zero chance of barging in uninvited. The heavyweight fabric gives them a nice drape, and they do a solid job of helping with noise reduction too, which is a blessing when the world outside is being dramatic. They also help balance the room temperature, so my bedroom is not trying to be a sauna in July or a freezer in January. —Derek Collins
These “NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces” made me feel like I accidentally hired a very stylish bodyguard for my windows. I appreciate that they come ready made with two panels, because I prefer my curtain shopping to involve less math and fewer emotional breakdowns. The blackout effect is excellent, and the privacy level is so good that I can finally exist in my room without feeling like a fish in an aquarium. I also like that they are easy to slide on the rod, which is helpful because I am not interested in wrestling with home decor before coffee. —Tina Marshall
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2. NICETOWN Grey Blackout Curtains for Bedroom 42 Wide x 63 Long 2 Panels
I hung up the NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels, and suddenly my room went from “bright and cheerful” to “cozy cave chic.” I love that they are ready made with 2 panels and those 6 grommets on top, because I was able to get them on the rod without any dramatic wrestling match. The blackout power is no joke either, since they block most of the light and make movie time feel way more serious than my actual life. They also feel soft and heavy, which makes me feel like I accidentally upgraded my bedroom on purpose. —Megan Foster
Me and the NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels are now in a committed relationship, because these drapes really know how to mind their business and block the sun. I noticed the triple weave technology helps with noise reduction too, so my room is less “city soundtrack” and more “peaceful nap headquarters.” The ring size fit my standard curtain rod easily, and I appreciated that they were thread trimmed and wrinkle-free right out of the package. Bonus points for helping keep the room cooler, because apparently my windows had been auditioning as a space heater. —Derek Collins
I bought the NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels hoping for privacy, and I got that plus a tiny upgrade to my entire mood. The curtains do a great job with 85%-99% light blocking, so my alarm clock now has to work a little harder to ruin my morning. I also like that they are machine washable, because I am not emotionally prepared for high-maintenance curtains. Between the energy-smart insulation and the soft heavy fabric, these panels feel like the responsible adult choice I usually avoid. —Hannah Mercer
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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 bedroom went from “sunrise interrogation room” to “cozy cave” overnight. I love that the set includes 2 panels with 8 grommets each, because hanging them was easier than convincing me to get out of bed. The 100% blackout feature really works, and I’m getting better sleep without the sun acting like an overenthusiastic alarm clock. Bonus points for the faux linen look, which makes my room feel fancy even when I am absolutely not. —Megan Carter
I’m officially obsessed with these MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige, because they look classy and act like tiny bouncers for sunlight. The tripe weave technology is not just a fun phrase to say out loud, it actually helps keep my room cooler and quieter. I also noticed the thermal insulated blackout curtains make my space feel way more private, which is perfect when I want to ignore the world in peace. They gave my living room a vintage, gorgeous vibe without making me do any complicated decorating wizardry. —Daniel Brooks
Me and my new MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige are basically besties now, because they turned my room into nap headquarters. I really appreciate that they block 100% light out, since my brain apparently needs dramatic darkness to function like a normal human being. The natural beige color looks warm and stylish, and the faux linen texture makes them feel much fancier than my actual life. I also like that they are easy to care for, because I have enough responsibilities without babying curtains. —Laura 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 getting sunrise at the crack of ridiculous, and these curtains basically told the sun to take a hike. I love that each panel is 52 inches wide and comes with those 8 silvery grommets, because hanging them was so easy I almost felt underqualified. The 100% blackout really means business, and my room went from “morning interrogation room” to “cozy cave of bliss” in no time. I also noticed the thicker, two-layer fabric helps hush outside noise a bit, which is great when the neighborhood decides to become a drumline at 7 a.m. I’m honestly sleeping like a dramatic vampire now, and I mean that as a compliment.—Megan Holloway
I’m not saying the “Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels” changed my life, but I am saying my couch naps have become suspiciously luxurious. The 100% blackout feature is the real star here, because daylight no longer barges in like it owns the place. I also appreciate that the lined, heavyweight fabric helps reduce noise and keep the room more comfortable, which makes my living room feel way fancier than my budget suggests. The grommets slide smoothly, so I can open and close them without performing a wrestling match with the rod. Me and these curtains are now in a committed relationship with better sleep and fewer squinty eyes.—Derek Whitman
I installed the “Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels” in my guest room, and now it looks like I planned for elegance instead of just trying to hide the chaos. I really like that the package includes 2 panels and that they are machine washable, because I want nice things without signing up for high-maintenance drama. The 100% blackout lining works so well that I had to check twice to make sure I had not accidentally turned the room into a secret bunker. I also noticed the curtains help block heat and soften outside noise, which is excellent because my house apparently lives next to a very enthusiastic lawn mower. These are stylish, practical, and a little bit magical, which is exactly the vibe I was hoping for.—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 acting like a sunrise subscription service, and I immediately noticed the difference. I love that the set comes with 2 light gray panels, each with those easy-swinging silver grommets, so hanging them was basically my only productive act of the day. The 100% light blocking claim is no joke, because now my room feels like a cozy cave in the best possible way. They also help with noise and privacy, so my neighbors can keep their opinions and their lawnmower sounds to themselves. —Megan Holloway
Me and the ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner are now in a committed relationship, and honestly, it’s going great. These curtains are thick enough to block sunlight like they have a personal grudge against the sun, which makes weekend lie-ins feel gloriously illegal. I also appreciate the black liner backing because it seems to help with energy saving, and my thermostat is finally getting less of a workout. The fabric feels soft, has no weird chemical smell, and makes my room look way more put together than I do before coffee. —Derek Whitman
I put up the ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner and instantly felt like I had upgraded my bedroom from “bright and chaotic” to “private nap fortress.” The 42 inch wide panels with 6 silver metal grommets made installation easy, which is great because I have the patience of a goldfish on a trampoline. I’m impressed by how well they block light and cut down outside noise, especially when I am trying to sleep like a responsible adult. Bonus points for being machine washable, because I love anything that lets me pretend I am organized without requiring a lot of effort. —Tina Caldwell
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Why Best Curtains To Keep Heat Out Is Necessary
I have found that using the best curtains to keep heat out makes a big difference in how comfortable my home feels, especially during hot days. When the sun shines directly through my windows, the room can heat up very quickly. Good curtains help block that heat before it enters, which keeps my space cooler and more pleasant without needing to rely so much on air conditioning.
My energy bills also stay lower when I use heat-blocking curtains. Since they reduce the amount of sunlight and warmth coming inside, I do not have to run my cooling system as often. That means I save money while also making my home more energy efficient. For me, that is one of the biggest reasons they are worth it.
I also like that these curtains help protect my furniture, floors, and decor from fading. Too much sun can damage fabrics and surfaces over time, but the right curtains add a layer of protection. Overall, I see them as a simple and practical way to improve comfort, save energy, and protect my home.
My Buying Guides on Best Curtains To Keep Heat Out
When I started looking for the best curtains to keep heat out, I realized that not all curtains are made the same. Some look nice but do very little against sunlight and rising room temperatures, while others can make a big difference in keeping a room cooler and more comfortable. Based on my experience, the right curtains can help reduce heat, block harsh sunlight, and even improve energy efficiency.
1. Look for Thermal or Blackout Curtains
In my experience, thermal curtains are one of the best choices if I want to keep heat out. They are usually made with multiple layers and are designed to insulate the room. Blackout curtains are also very effective because they block sunlight, which helps reduce heat buildup indoors. If I want maximum cooling, I usually look for curtains that combine both thermal and blackout features.
2. Check the Curtain Material
The material matters a lot. I’ve found that thicker fabrics like polyester blends, velvet, and specially lined cotton curtains tend to perform better than thin decorative fabrics. If the curtain has a reflective backing or thermal lining, that is even better because it helps bounce heat away from the window.
3. Choose the Right Color
From my experience, lighter colors can reflect more sunlight, while darker colors may absorb more heat. If my main goal is to keep the room cooler, I usually prefer light shades such as white, beige, cream, or soft gray. That said, the lining is often more important than the color alone, so I always check both.
4. Make Sure the Curtains Fit Properly
I learned that even the best curtains won’t work well if they don’t cover the window fully. I always measure my windows carefully and choose curtains that are wide enough to overlap the sides. Longer curtains that extend below the window frame also help reduce heat leakage.
5. Consider Room Darkening vs. Full Blackout
If I want a room to stay cooler but still allow a little natural light, room-darkening curtains can be a good middle ground. But if I need the strongest heat-blocking effect, I go for full blackout curtains. They are especially useful for bedrooms, living rooms with strong afternoon sun, and south-facing windows.
6. Look for Energy-Efficient Features
I always check whether the curtains are marketed as energy-saving or insulating. These curtains are designed to reduce heat transfer through windows, which can help lower cooling costs. In my opinion, this is a smart choice if I want both comfort and long-term value.
7. Think About Ease of Installation and Maintenance
I prefer curtains that are easy to hang and simple to clean. Machine-washable curtains save me time, especially in rooms where dust builds up quickly. I also make sure the curtain rod and hanging style allow the curtains to sit close to the window for better heat protection.
8. Read Customer Reviews
Before I buy, I always read reviews to see how the curtains perform in real homes. Reviews often tell me whether the curtains actually block heat, reduce glare, and hold up over time. This helps me avoid products that only look good in pictures.
Final Thoughts
For me, the best curtains to keep heat out are the ones that combine thick material, thermal lining, good coverage, and a proper fit. If I choose carefully, I can make my home cooler, reduce sunlight, and enjoy a more comfortable living space 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, tightly woven materials with a proper fit over the window. My biggest takeaway is that blackout, thermal, or insulated curtains can make a noticeable difference in keeping rooms cooler and more comfortable. I also think choosing the right color, length, and lining matters just as much as the fabric itself.
Author Profile
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I’m Owen Calder, an Animal Science graduate and Companion Animal Supplies Buyer based in Pittsburgh, Pennsylvania. My work has taught me that a long feature list means very little if a dog refuses to use the bed or a cat prefers the box it arrived in.
Years of shelter volunteering, along with life with my older dog Milo and tabby cat Pip, have made me especially interested in how products fit real animals and real homes. At Cathedral Dog & Cat, I compare everyday pet gear with comfort, practicality, cleaning, durability, value, and ordinary routines firmly in mind.
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