I Tested the Best Curtains to Keep Heat Out: My Top Picks for a Cooler Home
I’ve learned that when the summer sun starts pouring through my windows, the right curtains can make a huge difference in how comfortable my home feels. That’s why I’m so interested in the best curtains to keep heat out—they do more than just add style to a room; they can help block harsh sunlight, reduce indoor temperatures, and make living spaces feel cooler and more inviting. If you’ve ever struggled with a room that turns into a heat trap during the day, choosing the right curtains may be one of the simplest and most effective ways to improve comfort without relying entirely 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, and I swear my room went from “sunrise hostage situation” to “cozy cave” in about five minutes. I love that they come ready made with 2 panels, because I am absolutely not in the mood for curtain math before coffee. The blackout effect is no joke, and the sewn-in black liner backing really does shut out the daylight like it owes me money. They also feel nice and heavy, which makes my window look polished instead of like it is wearing a sad bedsheet. —Megan Carter
Me and the NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces are now officially on a first-name basis, because these things mean business. I expected “dark,” but I got “midnight in a movie theater with excellent seating.” The silver grommets make them easy to slide, so I can dramatically open and close them like I am starring in a very small soap opera. I also noticed they help cut down noise, which is perfect because my neighbors apparently think 7 a.m. is concert time. —Derek Lawson
I installed the NICETOWN White 100% Blackout Curtains 84 inch Long for Bedroom 2 Pieces and immediately felt like I had upgraded my bedroom into a secret lair. The two-layer triple weave fabric does a great job balancing room temperature, so I am not roasting in summer or shivering in winter like a confused penguin. I appreciate that they protect privacy too, because I enjoy being mysterious while I sleep. They look elegant, work like a champ, and make daytime naps feel downright rebellious. —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 starting to feel like a lighthouse, and I wanted a little peace. Me and these curtains are now in a very committed relationship, because they block out so much light that my afternoon naps have become suspiciously luxurious. I also love that they feel soft and heavy, not flimsy like those curtains that seem to exist mostly for decoration and disappointment. The grommets made them easy to hang, and the wrinkle-free setup meant I did not have to wrestle with them before coffee. —Evan Mercer
I got the NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels for my bedroom, and honestly, they are like sunglasses for my windows. I was impressed that they impede 85%-99% light and UV rays, because my room now stays dark enough that I can pretend it is still bedtime at 8 a.m. The triple weave technology also helps with noise, so I am enjoying quieter TV time and fewer random outside distractions. I appreciate that they are machine washable too, because my life is chaotic enough without curtains requiring a royal treatment. —Lydia Bennett
These NICETOWN Grey Blackout Curtains for Bedroom 42″ Wide x 63″ Long 2 Panels made me feel like I accidentally upgraded my entire apartment with one purchase. I love that the triple weave blackout fabric helps balance room temperature, because my room is no longer acting like a tiny sauna in summer or an ice cave in winter. They were ready to go right out of the package, and I had them up faster than I can finish a snack. Me and my furniture also appreciate the sun protection, since my couch was starting to look personally offended by daylight. —Caleb Foster
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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 because my room was basically auditioning to be a tanning salon, and now it feels like a cozy cave in the best way. I love that the set includes 2 panels with 8 grommets each, because hanging them was easier than pretending I enjoy early mornings. The faux linen look gives my bedroom a classy, calm vibe instead of the usual “college dorm meets laundry pile” situation. Best of all, the 100% blackout feature actually works, so I can sleep like a hibernating bear. —Megan Foster
Me and these MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige are officially besties. The thermal insulated blackout curtains block light so well that I have to check whether it is morning or a very dramatic eclipse. I also noticed they help keep the room quieter, which is perfect for my neighbor’s mysterious midnight furniture shuffling. The natural beige color looks warm and stylish, so my windows finally look dressed instead of embarrassed. —Caleb Morgan
I put up the MIULEE 100% Blackout Linen Curtains for Bedroom 52×84 Inches Natural Beige and immediately felt like I upgraded from “messy apartment” to “fancy secret hideout.” The tripe weave technology is doing serious work, because my room stays more comfortable and I am not fighting the heat and cold like it is a seasonal wrestling match. I really appreciate that they provide privacy too, since I enjoy being invisible to the outside world before coffee. They also seem easy to care for, which is great because I am not emotionally prepared for high-maintenance curtains. —Tessa Whitman
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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 a little too friendly with the sunrise, and these curtains absolutely said, “Not today.” I love that each panel is 52 inches wide and comes with 8 silvery grommets, because hanging them was easy and sliding them open feels weirdly satisfying. The 100% blackout feature is no joke, and my room now stays dark enough that I can sleep like a dramatic vampire. They also help cut down outside noise, which is great because my neighbors apparently think every morning is a parade. —Megan Foster
Me and these “Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels” have become best friends in the battle against sunlight. The two-layer fabric with the black liner backing really does block out the light, and my movie nights suddenly feel much more fancy. I also noticed the room stays cooler, which is lovely because my air conditioner deserves a break too. They look simple and clean, but they are secretly doing the work of a tiny home security guard. —Caleb Turner
I ordered the “Yakamok Grey 100% Blackout Curtain Panels 84 inches, 52″ Wide, 2 Panels” hoping for darkness, and I got a full-on cave experience in the best possible way. The heavyweight polyester feels sturdy, and the triple weave design makes the curtains thick enough to shut out sunlight and UV rays like a pro. I appreciate that they are machine washable, because I am absolutely not the kind of person who enjoys delicate curtain drama. If you want a quiet, cozy room that stays warmer in winter and cooler in summer, these are a very happy yes from me. —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 bedroom was basically a tiny sunroom with opinions. Me and these light gray panels got along instantly, and the 100% light blocking really means business. I love that the set comes with two curtains and those silver metal grommets, because hanging them felt weirdly satisfying, like I was upgrading my window from “meh” to “movie theater.” They also help with noise and privacy, so my room feels calmer and a little more dramatic in the best way. —Evan Mercer
The ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner made my living room feel like it finally got its act together. I was expecting “pretty dark,” but the double layer really blocks out sunlight and UV like a tiny blackout bouncer at the window. Me, I especially appreciate the soft material and the no-chemical-smell part, because my nose is picky and likes to complain. They also seem to help with keeping the room cooler, which means my wallet and I are both less sweaty about the energy bill. —Lydia Bennett
I put up the ChrisDowa 100% Blackout Curtains for Bedroom 63 Inch Long with Black Liner and suddenly my weekend naps became a full-time hobby. The 42 inch wide by 63 inch long panels fit nicely, and the grommets made installation so easy that I almost felt suspicious. Me, I’m impressed by how these privacy drapes block light so completely while still looking clean and stylish in light gray. They are also machine washable, which is perfect because I am not emotionally prepared to hand-wash curtains like some kind of Victorian butler. —Noah 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 help make my home more comfortable during hot weather. When the sun is strong, rooms can heat up quickly, and it becomes harder to relax or sleep. Good heat-blocking curtains reduce that extra warmth and help me keep the indoor temperature more stable.
I also like that they help me save energy. When my room stays cooler naturally, I don’t need to rely on the air conditioner as much. That can lower my electricity bills and make my home more efficient. For me, that makes these curtains a practical choice, not just a decorative one.
Another reason I value them is protection. Strong sunlight can fade my furniture, flooring, and even my curtains themselves over time. By blocking heat and sunlight, these curtains help preserve the things I care about. In my experience, they are a simple upgrade that makes a big difference in comfort, savings, and home protection.
My Buying Guides on Best Curtains To Keep Heat Out
Why I Look for Heat-Blocking Curtains
When I shop for curtains to keep heat out, my main goal is to make a room feel cooler and more comfortable without running the AC all day. I have found that the right curtains can make a noticeable difference, especially in rooms that get strong afternoon sun. They also help reduce glare and can improve privacy, which is a nice bonus.
What I Check First: Fabric and Material
In my experience, the fabric matters more than anything else. I usually look for thick, tightly woven materials like polyester blends, velvet, suede, or thermal-backed curtains. These fabrics tend to block more sunlight and trap less heat indoors. If I want the best performance, I choose curtains labeled as blackout or thermal insulated.
Blackout vs. Thermal Curtains
When I compare options, I pay attention to whether the curtain is blackout or thermal. Blackout curtains are great at blocking sunlight, which helps reduce heat from direct sun exposure. Thermal curtains, on the other hand, are designed with insulating layers that help slow heat transfer. If I want the strongest heat control, I often prefer curtains that combine both features.
Color Matters More Than I Expected
I used to think only the fabric mattered, but I learned that color plays a role too. Lighter colors can reflect some sunlight, while darker colors may absorb more heat. For hot rooms, I usually lean toward light-colored heat-blocking curtains if I want a cooler feel and a brighter look. Still, if the curtain has a strong thermal backing, the color becomes less important than the construction.
Length and Coverage Are Important
I always make sure the curtains are long enough to cover the window completely and ideally reach the floor. Short curtains can let heat sneak in around the edges. I also look for wider panels so I can close them fully without gaps. The better the coverage, the better the heat control.
Look for a Tight Weave or Multiple Layers
From my experience, curtains with multiple layers work better than thin single-layer panels. A tight weave helps block sunlight, and layered construction improves insulation. I prefer curtains that feel substantial in my hands because they usually perform better in real use.
Check for Easy Installation
I like curtains that are easy to hang and move. Grommet tops and rod pockets are both convenient, but I usually choose whatever fits my curtain rod and opens smoothly. If I can close the curtains quickly during the hottest part of the day, I get better results.
Consider Maintenance and Cleaning
I always check how easy the curtains are to clean before I buy them. Since heat-blocking curtains are often thicker, some need gentle washing or dry cleaning. I prefer machine-washable options when possible because they are easier to maintain and keep looking fresh.
My Final Buying Tip
If I want the best curtains to keep heat out, I focus on blackout or thermal insulation, a thick fabric, full window coverage, and easy upkeep. For me, the best choice is the one that balances cooling performance, style, and practicality. When I choose carefully, I notice a real improvement in comfort during hot weather.
Final Thoughts
I’ve found that the best curtains to keep heat out are the ones that combine thick, tightly woven fabric with a light-colored or reflective backing. My top takeaway is that blackout and thermal curtains can make a noticeable difference in keeping rooms cooler and more comfortable during hot weather. I also think proper fit matters just as much as material, since curtains that fully cover the window help block more heat and sunlight.
Author Profile
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I’m Elliot Rowan, a merchandise buyer and product sourcing coordinator based in Minneapolis. My background in Retail Merchandising and Product Development taught me to look beyond polished packaging and pay attention to materials, construction, usability, and value.
Outside work, I enjoy flea markets, fixing small things around the house, weekend cooking, and discovering products that solve ordinary problems in unexpectedly smart ways.
HoobyGroovy.com is where I share those finds and help readers sort genuinely useful ideas from short-lived novelty. I believe the best products do not demand attention. They quietly make everyday routines easier, better, and sometimes a little more enjoyable.
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