10 bestHeat Blocking Curtainsof July 2025
112M consumers helped this year.
1
NICETOWN Blackout Curtains 2 Panels for Bedroom- Thermal Insulated Grommet Blackout Curtains 63 Inches Long for Living Room/Kitchen Rideaux occultants (2 Panels, W42 x L63 -Inch,Grey)
NICETOWN
9.8
2
NICETOWN Heat Blocking 100% Blackout Curtains, Durable Black Lined Blackout Curtains for Halloween, Energy Saving Long Curtains for Patio Sliding Glass Door, Black, 70 inches x 95 inches, 2 Panels
NICETOWN
9.6
34% off
3
Joydeco Blackout Curtains 63 Inch Length 2 Panels Set, Thermal Insulated Long Curtains& Drapes 2 Burg, Room Darkening Grommet Curtains for Living Room Bedroom Window (W52 x L63 Inch, Black)
Joydeco
9.3
4
NICETOWN 100% Sun Blocking Curtains, Thermal Insulated & Soundproof Drapes with Black Backing, Full Light Blocking Window Treatments for Patio Sliding Door (Stone Blue, 1 Pair, 52 inches x 108 inches)
NICETOWN
9.0
5
NICETOWN Full Blackout Curtains for Bedroom - Thermal Insulated Heat Isolation Window Coverings with Thick Liner (W52-in x L45-in, Grey, 2 Panels)
NICETOWN
8.8
OtherUp to 30% off
Deconovo Thermal Insulated Sound Proof Curtains for Bedroom, Energy Saving Dark Grey Blackout Curtains 84 Inch Length, 2 Panels
NICETOWN Black Blackout Curtain 78 inches Long - Thermal Insulated Grommet Soundproof Heat & Cold Blocking Privacy Doorway Curtain Window Treatment for Bedroom (1 Panel, W52 x L78)
BGment 100% Blackout Curtains 2 Panels with Black Liner, Greyish White Thermal Insulated Double Layer Full Room Darkening Noise Reducing Grommet Window Curtains for Bedroom, 52 x 63 Inch
100% Blackout Curtains for Bedroom Thermal Insulated Blackout Curtains 84 inch Length Heat and Full Light Blocking Curtains Window Drapes for Living Room with Black Liner 2 Panels Set, Dark Teal
6
NICETOWN Blackout Curtains 2 Panels - Black Out Curtains 84 Inch Long, Room Darkening Grommet Curtains for Bedroom Living Room Windows (52 by 84 Inches, Black, Set of 2)
NICETOWN
8.5
7
NICETOWN 100% Blackout Curtain Panels, Thermal Insulated Black Liner Curtains for Nursery Room, Noise Reducing and Heat Blocking Drapes for Windows (Set of 2, Navy Blue, 42" Wide by 63" Long)
NICETOWN
8.2
8
NICETOWN Outdoor Curtains Waterproof 2 Panels - Thick Thermal Insulated Sun Blocking Blackout Drapes with Grommets for Gazebo/Backyard/Yard (84 x 84 Inches, Grey)
NICETOWN
7.9
9
NICETOWN White 100% Blackout Lined Curtains, 2 Thick Layers Completely Blackout Window Treatment Thermal Insulated Drapes for Kitchen/Bedroom (1 Pair, 52 inches Width x 63 inches Length Each Panel)
NICETOWN
7.7
10
Deconovo Room Darkening Curtains 84 Inch Long for Bedroom, Grommet Insulated Thermal Cutains 2 Panels for Living Room, 55Wx84L, Light Silver Grey
Deconovo
7.4
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A Guide to Selecting the Best Heat Blocking Curtains
Choosing heat-blocking curtains is a smart way to keep your home cooler in the summer and warmer in the winter. These curtains are designed to reduce the amount of heat that enters or escapes through your windows, making your living space more comfortable and energy-efficient. When shopping for heat-blocking curtains, it's important to understand the key features that affect their performance and how these features align with your specific needs, such as the room's exposure to sunlight, your climate, and your style preferences.
Material and Fabric Type
The material of heat-blocking curtains is crucial because it determines how well the curtains can insulate your windows. Common materials include polyester, microfiber, and specially coated fabrics. Heavier and tightly woven fabrics tend to block more heat, while lighter materials may let more heat through. If your room gets a lot of direct sunlight or you live in a hot climate, opt for thicker, denser fabrics. For rooms with less sun exposure, a lighter material may suffice.
Thermal Lining
Thermal lining refers to an extra layer added to the back of the curtain to enhance its heat-blocking abilities. This lining is often made from acrylic foam or other insulating materials. Curtains with thermal lining are more effective at keeping heat out in the summer and retaining warmth in the winter. If energy efficiency and temperature control are your top priorities, look for curtains with a high-quality thermal lining. If you only need mild heat reduction, a single-layer curtain might be enough.
Light Blocking (Blackout Capability)
Blackout capability measures how much light the curtains can block, which often goes hand-in-hand with heat-blocking performance. Full blackout curtains can block nearly all incoming light and provide the best heat insulation, while room-darkening or semi-blackout curtains allow some light through and offer moderate heat reduction. If you want to darken a bedroom or media room and maximize heat blocking, choose full blackout curtains. For living spaces where you want some natural light, a lighter option may be better.
Curtain Size and Coverage
The size of the curtain relative to your window is important because gaps can let heat in or out. Curtains should be wide and long enough to cover the entire window, ideally extending a few inches beyond the window frame on all sides. For maximum effectiveness, choose curtains that are generously sized for your windows. If you have unusually shaped or large windows, consider custom sizing to ensure full coverage.
Color and Finish
The color and finish of your curtains can also impact their heat-blocking ability. Lighter colors tend to reflect sunlight and heat, while darker colors may absorb more heat. If your main goal is to keep a room cool, especially one that gets a lot of sun, opt for lighter-colored curtains. If you prefer a certain aesthetic or want to retain warmth in winter, darker colors might be suitable.
Ease of Maintenance
Curtains need to be cleaned regularly, so it's important to consider how easy they are to maintain. Some heat-blocking curtains are machine washable, while others require dry cleaning. If you want low-maintenance curtains, look for options that can be easily washed at home. If you don't mind occasional trips to the dry cleaner, you can consider more delicate fabrics.
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