We Tested the 11 Best Thermal Curtains

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Cut down on energy use while adding style to your home with the insulating power of these attractive window treatments.

Even the highest-rated windows present an opportunity for air to infiltrate the home, causing HVAC systems to work harder to keep the house warm in the winter and cool in the summer. Thermal curtains are an extra layer of insulation that can make a home more energy efficient.

The best thermal curtains consist of multiple layers of fabric with thick padding or added layers that prevent air from circulating from the window into the home. We even spoke to HVAC expert Jimmy Hiller, founder and president of Happy Hiller in Nashville, Tennessee, to confirm this. “In simple terms, thermal curtains help you keep the heat where you want it—inside or outside.” In addition to this insulating effect, these window treatments dampen sound and block light.

With so many brands and styles of thermal curtains available, selecting a set that adds efficiency while meshing with home aesthetics can be a challenge. We tested each of the curtains on our list, noting their ability to insulate, block light, and hold up to general wear and tear. We hung them in bedrooms and evaluated their efficacy during cold winter and warmer spring temperatures. This guide reviews the results of our tests and the most important features to consider so you can choose from the best products available.

1. BEST OVERALL: Best Home Fashion Wide Basic Thermal Blackout Curtain
2. RUNNER-UP: Nicetown Triple-Weave Noise-Reducing Thermal Curtain 
3. BEST BANG FOR THE BUCK: Deconovo Thermal Insulated Blackout Curtain
4. UPGRADE PICK: Bodulf Cross-Linen Thermal Blackout Curtains
5. BEST PATTERNED: HLC.ME Paris Paisley Blackout Grommet Curtain Panels
6. BEST TEXTURED: Abihail Burlap Weave Thermal Extreme Blackout Curtain 
7. BEST COLOR SELECTION: BGment Thermal Blackout Curtains for Bedroom
8. BEST NOISE REDUCTION: House of Hampton Dora Max Blackout Curtain Panel
9. BEST VELVET: Dreaming Casa Darkening Thermal Velvet Curtains
10. BEST FOR OUTDOORS: Nicetown Triple-Weave Outdoor Blackout Curtains 
11. BEST FOR KIDS: H.Versailtex Blackout Star Thermal Curtains for Kids

How We Tested the Best Thermal Curtains

We installed all the curtains on our lists in bedrooms and evaluated each by an established set of guidelines. We tested their ability to block light, regulate temperature, and hold up to use and machine washing (if applicable).

To test the curtains’ light-blocking abilities, we turned off daytime interior lights and scored how well the curtains prevented outdoor light from leaking in. To test thermal control, we compared room temperature several times daily with the curtains open versus closed. We also scored the curtains based on fabric quality, thickness, and drape, factors that influence how well the curtains wash and wear over time. We also washed the curtains according to the manufacturer’s instructions if applicable.

Our Top Picks

With so many different types of thermal curtains on the market, making a decision on which to buy can be challenging. The following list breaks down some of the best options in various categories. Each of the curtains on this list was tested for at least 5 days, with their thermal-control, light-blocking, and noise-control abilities at the forefront of the testing process.

Best Overall

Best Home Fashion Wide Basic Thermal Blackout Curtain

Product Specs 

• Dimension options: 54 to 132 inches long by 40 to 100 inches wide
• Material: Polyester
• Number of colors: Numerous; varies by size and retailer

Pros

• Excellent light blocking makes these a great option for sleepers who prefer pitch dark
• Multiple colors in deep, rich hues that complement various home decor preferences
• Machine-washable fabric is easy to clean and maintain

Cons

• Fabric creases can be difficult to remove
• Back of curtain displays the curtain color rather than a neutral shade

With its high insulating and light-blocking qualities, this thermal curtain from Best Home Fashion adds an extra layer of insulation to windows while contributing to the room’s aesthetics. It features triple-weave polyester construction that includes a layer of black yarn, keeping out up to 99 percent of light (the darker color choices are most effective) and 100 percent of ultraviolet (UV) rays, helping to keep the home warm in the winter and cool in the summer.

Each panel features attractive antique bronze grommets that are 1.6 inches in diameter. These panels come in lengths between 54 to 132 inches and widths from 40 to 100 inches. With dozens of colors available (options vary by size and retailer), there is sure to be an option that matches your home’s decor. These curtains are machine washable, making them easy to maintain.

The curtains did an excellent job of insulating and blocking light. We tested the extra-wide curtain panel in burgundy. The dark, rich color kept nearly all light out, and the thick fabric draped well. The only downside to these is that the curtain’s back is the same color as the front. Those who like uniform curtain colors from the exterior of their home will need a second neutral layer to face the street.

Get the Best Home Fashion thermal curtains at Amazon, The Home Depot, or Best Home Fashion.

Runner-Up

Nicetown Triple-Weave Noise-Reducing Thermal Curtain

Product Specs 

• Dimension options: 40 to 120 inches long by 29 to 55 inches wide
• Material: Polyester blend
• Number of colors: Numerous; varies by size

Pros

• Many sizes to choose from; suitable for most window sizes
• A bit of noise reduction makes these a good choice for busy streets
• Extensive color options will match almost any decor choice

Cons

• Colors can fade over time if hit by constant direct sunlight

This set of thermal curtains from Nicetown features insulating layers with a black yarn layer sandwiched between two microfiber layers. They provide protection against winter cold and summer heat while reducing noise and blocking up to 99 percent of sunlight.

These curtains feature 1.6-inch grommets, making them suitable for most standard curtain rods. A selection of over 30 solid colors makes them ideal for a variety of styles. And, with sizes ranging from 40 inches long by 29 inches wide to 120 inches long by 55 inches wide, they’ll fit virtually any window. Their machine-washable fabric makes them easy to clean, though getting wrinkles out can take some work.

During testing, we found the triple-layer design effective at hiding the inner black thread layer. However, we also found that the manufacturer’s claim of 99 percent light blocking was a bit of an exaggeration. While they did a good job of blocking out light and heat, we’d put the percentage closer to between 75 and 80. They also dampened some noise but were not entirely noise blocking.

Get the Nicetown noise-reducing thermal curtains at Amazon.

Best Bang for the Buck

Deconovo Thermal Insulated Blackout Curtain

Product Specs 

• Dimension options: 45 to 108 inches long by 42 to 100 inches wide
• Material: Polyester
• Number of colors: Numerous; varies by size and retailer

Pros

• Affordable compared to similar options with only slightly less heft
• Triple-layered for increased insulation and light blocking
• Machine-washable fabric makes these curtains simple to clean and maintain

Cons

• Cheaper materials may not last as long compared to more durable options

Window treatments don’t have to be expensive, as these thermal curtains from Deconovo prove. These energy-saving insulated curtains feature three layers of fabric for maximum blackout and insulation quality, cutting those energy bills without demanding you invest a lot of money up front.

These curtains include standard 1.6-inch grommets and are available in 18 sizes, ranging from 45 to 108 inches long by 42 to 100 inches wide. With over 30 colors to choose from (selection varies by size and retailer), there are plenty of options to match home decor. Cleaning the Deconovo curtains is easy: Just throw them in the washing machine on a cold, gentle cycle.

The Deconovo curtains look similar to the other curtains tested—even those that cost a lot more. They block out 75 to 80 percent of light and a similar amount of heat. The fabric doesn’t have quite the heft of some of the other curtains on the list, but they’re a great option for those on a budget. Keep in mind that the price is for a single curtain only—double the price to purchase a pair.

Get the Deconovo thermal curtains at Amazon, Deconovo, or Walmart.

Upgrade Pick

Bodulf Cross-Linen Thermal Blackout Curtains

Product Specs 

• Dimension options: 84 to 120 inches long by 50 inches wide
• Material: Polyester
• Number of colors: 8

Pros

• High-quality material looks like linen, creating a sophisticated appearance
• Heavy material with excellent drape, so it feels smooth rather than stiff
• Excellent light blocking and notable thermal control

Cons

• Comes in limited sizes but fits the average-size window
• Not machine washable; dry-clean only

Those who want an understated luxe look will appreciate the Bodulf cross-linen curtains, designed to look similar to expensive linen. Unlike traditional stiff polyester, the weight and thickness of these curtains allow them to drape beautifully—they even feel like high-end linen.

These curtains, sold as single panels, have a rod pocket, tabs, and a hook belt, offering a wide range of hanging options. Their white foam backing offers thermal control, lighting blocking, and sound absorption. Plus, the white backing creates a uniform window experience on the home’s exterior. Offered in only four sizes that range from 84 inches long by 50 inches wide to 120 inches long by 50 inches wide, these curtains might not fit every window. However, they come in multiple colors, ranging from neutrals to rich black or indigo, that are likely to please most.

During testing, the Bodulf curtains offered excellent light blocking and thermal control. They dampened some sound, but they didn’t bring it down as much as some of the thicker curtains. Of the curtains we tested, these stood out for their balance of performance and appearance. We didn’t love that they’re dry-clean only, but to maintain the curtain’s stunning appearance, it’s worth it.

Get the Bodulf thermal curtains at Wayfair.

Best Patterned

HLC.ME Paris Paisley Blackout Grommet Curtain Panels

Product Specs 

• Dimension options: 54 to 96 inches long by 50 inches wide
• Material: Polyester
• Number of colors: 5

Pros

• Attractive paisley-patterned design can fit both traditional and contemporary decors
• Great for saving on energy costs
• Filters 60 percent of light and dampens sound

Cons

• Lighter colors tend to fade over time, and pattern may not be pleasing to all

With its diverse and rich collection of paisley patterns, the HLC.ME curtains add flair and visual interest. HLC.ME’s curtains use triple-weave polyester fabric to insulate windows, saving up to 30 percent on energy costs.

The HLC.ME curtains are machine washable and dryer-friendly on a low setting. The panels are all 50 inches wide and come in lengths ranging from 54 inches to 96 inches, allowing you to achieve looks ranging from tailored to elegant. Each set comes with two panels.

During testing, these curtains filtered out about 60 percent of light and a similar amount of sound. In artificial light, the muted colors almost look faded. When light shines through these curtains, the silver light-blocking panel gives the paisley pattern a silvery cast. They’re a great option if you love the pattern, but compared to the other options we tested, they’re not the most effective at controlling temperature or light.

Get the HLC.ME thermal curtains at Amazon, Walmart, or HLC.ME.

Best Textured

Abihail Burlap Weave Thermal Extreme Blackout Curtain

The name of these curtains include the word “extreme,” which proved apt based on our testing.

Product Specs 

• Dimension options: 63 to 96 inches long by 52 inches wide
• Material: Polyester
• Number of colors: 4

Pros

• Thick fabric and lining keep out nearly all light
• Noticeable improvement in regulating temperature and diminishing sound
• Machine-washable fabric with a detailed but subtle weave

Cons

• May have a few loose threads upon opening
• Need to be hung immediately after washing because they tend to wrinkle easily

Advertised as 100 percent light blocking, these curtains from Abihail lived up to their claim. They also did an excellent job maintaining the room temperature, and while they didn’t completely block out sound, there was a distinct dampening effect.

The Abihail curtains are only available in three sizes, ranging from 63 to 96 inches long by 52 inches wide, but if there’s a size to match your window, you won’t be disappointed. With a 1.5-inch-diameter grommet, they fit most standard curtain rods. The burlap weave texture of their polyester rayon blend adds to the richness and detail of a room without overwhelming your overall decor.

In addition to their performance, we also liked how easily these curtains washed. They arrived stiff, with noticeable wrinkles and a few loose threads that needed clipping. They relaxed somewhat after washing and drying, but they were still a bit stiff rather than drapey and had to be hung immediately to prevent new wrinkles from appearing.

Get the Abihail thermal curtains at Wayfair.

Best Color Selection

BGment Thermal Blackout Curtains for Bedroom

Product Specs 

• Dimension options: 45 to 120 inches long by 38 to 70 inches wide
• Material: Polyester
• Number of colors: 30

Pros

• Multiple sizes available with a great range of colors
• Simple, solid color choices work well in most homes
• Easy to maintain; can be lightly ironed to eliminate wrinkles

Cons

• No neutral backing fabric, so those preferring a neutral exterior look will need another layer

With 30 colors to choose from, these thermal curtains from BGment have style options to suit most rooms. They feature a triple-weave design of polyester microfiber and black yarn to insulate in both the summer and winter while remaining soft to the touch. During testing, we found that those three layers also muffle outside noises while blocking between 80 and 95 percent of light, facilitating some sleeping in on the weekends.

Each panel uses 1.6-inch silver grommets, making them compatible with most standard rods. These curtains are easy to maintain, too. Simply throw them in the washing machine on the gentle cycle with cold water and tumble dry on low. BGment thermal curtains come in sizes ranging from 45 inches to 120 inches long by 38 to 70 inches wide, though all sizes may not be available in all colors. Each set includes two curtain panels.

The wide color selection includes bold, deep colors that hold up to sunlight. However, the cur