Best Thermal Curtains for Keeping Heat In

Thermal curtains work best as part of a layered approach to draughts and window heat loss. Look for generous width, a drop that covers the opening and dense or lined fabric; the fit around the edges often matters more than a dramatic “thermal” label. Blackout coatings and removable liners can add another barrier, while a separate lining may upgrade curtains you already own.

Open curtains to use daylight and close them before rooms cool, without covering radiators or blocking required ventilation. Draught-proofing and improvements to the window itself may make a larger difference where gaps or poor glazing are the main problem. For prices and ordering, click on the product image.

Best Thermal Curtains for Keeping Heat In – our recommendations

Sleepdown Woven Tonal Fleck Blackout Curtains 66 x 54 Inch

Sleepdown’s Tonal Fleck pair is a practical option for a wide, short window. Each charcoal panel measures 66 x 54 inches and uses a woven face, microfiber lining and bonded blackout construction. Ten eyelets per panel fit a standard curtain pole, while the 30°C machine-washable fabric is easier to maintain than dry-clean-only pairs. The multitone texture gives the curtains more depth than flat black fabric, and the generous combined width allows useful folds and centre overlap. This exact Amazon UK listing contains two panels.

Enhanced Living Nightfall Thermal Blockout Eyelet Curtains 66 x 54 Inch

Nightfall is a useful conventional pair for a living room or bedroom that needs more width than a 46-inch set. The two black panels measure 66 x 54 inches each and use 230gsm triple-weave polyester, with a dark centre layer woven into the fabric. Eyelets make them straightforward to hang on a suitable pole, and the soft finish avoids the stiff feel associated with some coated blackout curtains. Enhanced Living specifies hand washing rather than machine washing, so the care requirement is worth noting before choosing them for a busy family room.

Yorkshire Bedding Pencil Pleat Blackout Curtains 46 x 54 Inch

This compact pair uses a pencil-pleat heading, making it appropriate for a curtain track as well as a pole fitted with rings and hooks. Each black polyester panel measures 46 x 54 inches, and two matching tiebacks are included. The size is practical for a smaller bedroom window where full-length curtains would obstruct furniture or a radiator. Yorkshire Bedding offers the same range in several larger drops and colours, but the linked Amazon listing is the short black pair. As with any pencil-pleat curtain, hooks are needed and the heading must be gathered to the required width.

Fusion Strata Black Thermal Eyelet Curtains 90 x 72 Inch

The 90 x 72 inch Strata pair is aimed at a broad window or glazed opening that smaller ready-made curtains would cover poorly. Fusion uses a triple-woven, room-darkening polyester fabric with a plain cotton-look surface and an eyelet heading. That combination gives a softer domestic appearance than a visibly backed curtain while adding useful fabric across a large area. The generous width is the main reason to choose this variant. Fusion specifies professional dry cleaning, so it is better suited to a living room or dining room than somewhere curtains are likely to need frequent washing.

Homescapes 3-Pass Blackout Thermal Curtain Lining Pair 46 x 54 Inch

Replacing sound curtains is unnecessary when a suitable lining can add the missing blackout and thermal layer. This Homescapes pair is sized for 46 x 54 inch ready-made curtains, with the liners themselves cut slightly smaller so they remain hidden from the front. A three-pass coated construction blocks light and can be attached to pencil-pleat curtains; eyelet curtains need appropriate hooks. Nine sizes are available within the range, but this ASIN is the 46 x 54 inch version. The linings are dry-clean only, which should be considered alongside the care instructions for the existing curtains.

MIULEE Beige Velvet Double-Layer Quilted Thermal Door Curtain

MIULEE takes a more substantial approach than ordinary triple-weave fabric. This beige velvet door curtain has a separate quilted lining, creating two fabric layers across a doorway or tall glazed opening. The velvet face gives it a softer, more decorative finish than many heavy winter door curtains, while the lined construction is intended to form a denser barrier when closed. It works best where the fabric can hang close to the opening without obstructing door movement. Confirm the selected dimensions and heading on Amazon against the fitted pole, required width and finished drop before ordering.

Fusion Sorbonne Dark Grey Thermal Lined Eyelet Curtains 66 x 90 Inch

Fusion’s Sorbonne pair uses a 100% cotton face over a 50% cotton and 50% polyester lining, offering a different construction from the synthetic blackout curtains elsewhere in the guide. Each charcoal panel measures 66 x 90 inches and hangs from an eyelet heading. The tall drop suits full-length windows and glazed doors, while the semi-plain finish works in bedrooms, living rooms and dining rooms. Fusion specifies machine washing at 40°C, low-temperature ironing and no tumble drying. The Amazon UK listing contains two panels.

Imperial Rooms Black Pencil Pleat Thermal Door Curtain 66 x 84 Inch

This Imperial Rooms product is a single 66 x 84 inch panel rather than a window-curtain pair. Its width and drop are intended for a door or narrow glazed opening, and the pencil-pleat heading can work with a track or a ringed pole when fitted with suitable hooks. A matching tieback is included, which is useful where the panel needs to be held away from an opening during the day. The black thermal blackout fabric favours light control as well as warmth. Measure from the fitted track or rings, not simply from the top of the door frame.

Catherine Lansfield Wilson Check Blackout Thermal Eyelet Curtains 66 x 90 Inch

Wilson Check offers a more traditional furnished-room appearance than the plain polyester pairs that dominate this category. The natural-coloured set contains two lined panels, each approximately 66 x 90 inches, with an eyelet heading and a one-pass thermal finish. The woven check works particularly well in a living room where the curtains remain a large visual feature when open. The substantial drop can cover taller windows while keeping a consistent pattern across both panels. Catherine Lansfield specifies 100% polyester and dry cleaning, so care is less casual than with machine-washable triple-weave pairs.

Laurence Llewelyn-Bowen Montrose Ivory Velvet Blackout Curtains 46 x 54 Inch

Montrose is the decorative velvet option in this selection. The linked ivory pair measures 46 x 54 inches per panel and combines a soft pile face with blackout coating and an eyelet heading. It is a sensible format for a smaller window where a richer fabric is wanted without buying an oversized pair. Velvet also gives the folds more visual weight than smooth triple-weave polyester. The pale colour is easier to place in a neutral room than black or navy, while the coated construction supplies the light barrier rather than relying on the face colour alone.

Joydeco Faux Linen 100% Blackout Eyelet Curtains 66 x 54 Inch

Joydeco combines a linen-look face with a coated back layer, allowing this light linen-coloured pair to provide the stated full blackout rather than the partial darkening common with pale triple-weave curtains. Each panel is 66 x 54 inches and has eight 40mm eyelets. The wider short format suits a broad window above a radiator or furniture, provided the finished hem remains clear of the heat source. Two panels and their coating create a useful barrier without the look of heavy velvet. The maker advises a total flat width around 1.5 to 2.6 times the pole width for fullness.

H.Versailtex Charcoal Grey Thermal Blackout Pencil Pleat Curtains 46 x 54 Inch

This H.Versailtex pair gives buyers a tape-top alternative to the numerous eyelet models. The two charcoal-grey panels measure 46 x 54 inches and come with matching tiebacks. Pencil pleats allow the heading width and gather to be adjusted, which is helpful on a short track or a pole using curtain rings. The dark fabric is intended for room darkening as well as thermal insulation, making it particularly relevant to a bedroom or home office. It is a compact, conventional design rather than a bulky lined door curtain, so accurate width and overlap remain important.

Deconovo Gold Star Foil Thermal Blackout Eyelet Curtains 52 x 84 Inch

Plain utility fabric is not the only option. This Deconovo pair uses a silver-grey face with a gold star foil print, while retaining thermal blackout construction and a ring-top heading. Each panel measures 52 x 84 inches, a versatile size for a bedroom window or glazed door. The pattern makes the curtains particularly suited to a child’s room or a space where a solid dark panel would feel severe. Their performance still depends on coverage, so allow enough combined width for folds and centre overlap rather than stretching both panels flat across the window.

VEHEDE Gradient Thermal Blackout Eyelet Curtains 52 x 84 Inch

The black-to-greyish-white gradient distinguishes this VEHEDE pair from plain blackout curtains without introducing a busy print. Two 52 x 84 inch panels are supplied, each with an eyelet heading and room-darkening thermal fabric. The darker section strengthens the visual connection with the blackout function, while the pale section keeps the overall treatment from appearing solid black. This size can cover many full-length windows and smaller patio openings. Match the orientation shown in the listing before purchase, and base the order on the individual panel width rather than reading 52 inches as the width of the complete pair.

DUALIFE Navy Thermal Blackout Back Tab Curtains 52 x 108 Inch

Very tall windows need a genuinely long curtain rather than a standard pair hung too high. These DUALIFE panels measure 52 x 108 inches each and use a combined back-tab and rod-pocket heading, creating a cleaner top edge than metal eyelets. The navy thermal blackout fabric suits a tall bedroom window, patio opening or high-ceilinged room where 84- or 90-inch drops finish short. Two panels are included. The two heading options also let the pole sit either visibly above the fabric or behind the top edge, depending on the chosen finish.

CUCRAF Dark Grey Thermal Blackout Rod Pocket Curtains 52 x 96 Inch

CUCRAF fills the gap between normal door-length curtains and extra-long 108-inch designs. The linked dark-grey set contains two 52 x 96 inch panels with rod-pocket headings, room-darkening fabric and thermal insulation. It is a practical size for tall windows where eyelets would add unwanted metalwork or where a simple pole is already fitted. The rod pocket creates closely spaced gathers and a tidy top without visible metal rings. The understated colour also makes the panels easy to place in a living room or bedroom, provided the existing pole fits the heading specified by the listing.

PONY DANCE Black Thermal Blackout Eyelet Curtains 46 x 54 Inch

This long-running PONY DANCE design is the straightforward budget eyelet pair in the guide. It contains two black 46 x 54 inch polyester panels with triple-weave construction and 40mm eyelets. The dark colour and compact size work well for a small bedroom or office window where light control matters alongside a modest insulating layer. The fabric is machine washable, which is more convenient than dry-clean-only curtains in a frequently used room. It is not a separate quilted or coated lining system, so choose it for a simple ready-made treatment rather than maximum fabric thickness.

PONY DANCE Short Pencil Pleat Thermal Blackout Curtains 46 x 36 Inch

At 36 inches deep, this pair addresses small windows that are poorly served by standard 54-inch curtains. The two black panels are each 46 inches wide and use a pencil-pleat heading, with hooks included for fitting to a suitable track or ringed pole. The thermal blackout fabric makes them useful for a kitchen, caravan, bay or compact bedroom window where a long hem would interfere with a worktop, desk or radiator. Their short drop makes careful placement especially important, as the panels still need to extend beyond the visible glass and meet properly at the centre.

DWCN Black Thermal Blackout Eyelet Curtains 46 x 54 Inch

DWCN offers another compact pair, but with a softer plain finish and ring-top fitting for households that do not want to set pencil pleats. The linked black set contains two 46 x 54 inch panels intended for bedrooms and living rooms. Eyelets make the pair quick to fit and easy to draw, while the thermal blackout fabric combines privacy, light reduction and an added layer across the glazing. This is a sensible choice for a standard small window and an existing pole. As always, confirm that the combined panel width leaves enough fullness when the curtains are closed.

Dreamscene Blush Pink Thermal Blackout Pencil Pleat Curtains 66 x 54 Inch

Dreamscene provides a wider short curtain in a colour rarely represented among thermal ranges. The blush-pink set contains two 66 x 54 inch panels with a tape-top pencil-pleat heading, giving traditional gathers and compatibility with tracks or ringed poles. Blackout fabric adds privacy and light control while the thermal construction places another layer in front of the window. The 66-inch width is useful where a short drop is needed but a 46-inch pair would look stretched. It suits bedrooms and nurseries especially well, without relying on printed motifs that may date more quickly than a plain fabric.

Thermal Curtains for Keeping Heat In Resources

• Energy Saving Trust windows and doors guide – Compares thermal curtains with draught-proofing, secondary glazing and replacement glazing.
• Energy Saving Trust draught-proofing advice – Explains how to find unwanted gaps without blocking ventilation that the home needs.
• GOV.UK existing home ventilation guide – Covers condensation, moisture and why trickle vents and other ventilation openings should remain clear.
• GOV.UK fire safety in the home – Includes practical advice on keeping portable heaters clear of curtains and furniture.
• Electrical Safety First portable heater guidance – Gives placement, clearance and safe-use advice where curtains and electric heaters share a room.
• Historic England advice on windows in older homes – Discusses thick curtains, shutters, repairs, draught-proofing and secondary glazing for traditional windows.

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