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Blackout vs Thermal vs Honeycomb: Which Keeps Heat In? (2026)

If you want to stop cold drafts and lower heating bills this fall and winter, this head-to-head looks at blackout, thermal and honeycomb options — and how three BGment thermal blackout curtains stack up. You’ll learn which fabric and construction trap heat best, where honeycomb shades still win, and which BGment set is the smartest buy for your window size and budget. Products here were selected from CozyMeter’s database for strong insulation claims, real customer feedback on fit and functionality, and clear feature info (grommets, polyester fabric, machine-washable care).

Last updated: October 05, 2026

Quick Answer

For most homes, thermal blackout curtains give the best mix of heat retention and light blocking — our top pick is BGment Room Darkening Curtains 95 Inches Long (B07T86WRSJ). Budget shoppers should consider the 84-inch BGment set (B07SL1FS59) for similar insulation at a lower price.

Quick Comparison

Select 2-3 products to compare side-by-side

Product comparison table
Compare Product CozyMeter Score Price Tier Key Feature Best For Action
BGment Room Darkening Curtains 95 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 95 Inch, Beige BGment 95" Beige
★ ★ ★ ★ ★ 4.9
Premium Thermal insulated blackout fabric Large windows & rooms needing max coverage Check Price
BGment Room Darkening Curtains 84 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 84 Inch, Light Grey BGment 84" Light Grey
★ ★ ★ ★ ★ 4.9
Budget Affordable thermal blackout set Budget-conscious rooms or standard-height windows Check Price
BGment Room Darkening Curtains 95 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 95 Inch, Pure White BGment 95" Pure White
★ ★ ★ ★ ★ 4.9
Mid-Range Best-value 95" thermal panels Buyers wanting long panels with neutral color Check Price
0 products selected

1. BGment Room Darkening Curtains 95 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 95 Inch, Beige

BGment Room Darkening Curtains 95 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 95 Inch, Beige
★ ★ ★ ★ ★ 4.9/5 CozyMeter Score · editorially ranked

A long, heavy-feel polyester curtain set designed to block most daylight and help insulate against winter chill. Customers praise its look and material quality; it’s the best choice here when you want longer panels and a dressier appearance.

Key Specs

  • Material: Polyester
  • Panel size: 52 x 95 inch (each)
  • Construction: 8 metal grommets per panel (1.6" inner diameter)
  • Care: Machine washable (gentle, cold)

Pros

  • Better length and coverage than the 84" option for taller windows
  • More premium look and color depth than the budget pick
  • Stronger material feel and consistent functionality praised by buyers

Cons

  • Pricier than the Budget and Best Value options
  • Some users report it’s room-darkening rather than absolute blackout

Best For: Large windows & rooms needing max coverage

Check Latest Price on Amazon

2. BGment Room Darkening Curtains 84 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 84 Inch, Light Grey

BGment Room Darkening Curtains 84 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 84 Inch, Light Grey
★ ★ ★ ★ ★ 4.9/5 CozyMeter Score · editorially ranked

The most budget-friendly BGment option here, offering thermal insulation and solid light reduction in a shorter 84" length. Buyers like the value and appearance; it’s a practical pick for standard windows or renters.

Key Specs

  • Material: Polyester
  • Panel size: 52 x 84 inch (each)
  • Construction: 8 metal grommets per panel (1.6" inner diameter)
  • Blackout claim: Blocks 85%-99% sunlight (darker colors work better)
  • Care: Machine washable (gentle, cold)

Pros

  • Lower price than the 95" sets while keeping similar insulation features
  • Better choice for standard window heights than longer panels
  • Still offers the same grommet style and easy hanging as pricier options

Cons

  • Shorter length may not suit tall windows or floor-to-ceiling installations
  • Some buyers find the blackout level variable depending on color

Best For: Budget-conscious rooms or standard-height windows

Check Latest Price on Amazon

3. BGment Room Darkening Curtains 95 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 95 Inch, Pure White

BGment Room Darkening Curtains 95 Inches Long - Grommet Thermal Insulated Drapes Window Treatment Curtains for Bedroom, 2 Panels, 52 x 95 Inch, Pure White
★ ★ ★ ★ ★ 4.9/5 CozyMeter Score · editorially ranked

A mid-range 95" option in pure white that balances appearance and cost. It shares the same polyester thermal construction and easy-care benefits as the other BGment sets and is often chosen for its clean, bright look and solid value.

Key Specs

  • Material: Polyester
  • Panel size: 52 x 95 inch (each)
  • Construction: 8 metal grommets per panel (1.51" inner diameter)
  • Care: Machine washable (gentle, cold)

Pros

  • Better price-to-length balance than the Premium 95" beige set
  • Neutral white suits modern decor and brightens rooms compared with darker panels
  • Same insulation and hanging convenience as other BGment 95" panels

Cons

  • White panels can show dirt sooner than darker colors
  • Like the others, some shoppers call it room-darkening rather than full blackout

Best For: Buyers wanting long panels with neutral color

Check Latest Price on Amazon

How to Choose the Right Product

How to Choose the Right Window Covering for Heat Retention

When your goal is energy savings during chilly months, focus on three things: fabric construction, fit/coverage, and installation. Thermal curtains and blackout curtains often overlap — many thermal sets use thick polyester layers or a coated backing to reduce heat transfer and block drafts. Honeycomb (cellular) shades are a different animal: they trap air in pockets and can outperform flat curtains at insulating narrow windows, but they’re usually pricier and less decorative than drapes.

Compare these attributes before you buy: insulation performance (does the product mention thermal liner or air-trapping design?), fit and overlap (curtains should extend past the window frame and ideally reach the floor), and ease of care (machine washable vs dry-clean only). Customers routinely praise quality, color, softness and how a curtain looks in the room — but common complaints include thickness (too thin to fully insulate), scratchy backing, and durability concerns over time. Polyester thermal panels like the BGment sets reviewed here tend to offer good value, easy care, and consistent color — though darker colors will block more light.

Size matters: choose a longer panel for taller windows (95" vs 84") and allow extra width or a double rod if you want full overlap to stop drafts. Hardware compatibility is another small but important point — check grommet inner diameters (BGment panels list 1.51–1.6") against your rod. Finally, consider honeycomb shades if maximum R-value for a single-pane window is your priority — the trapped air pockets can reduce heat loss more effectively than a single-layer curtain — but expect to pay more and trade some of the decorative flexibility curtains offer.

Budget Tiers

Budget: Good for renters and standard windows — offers value, machine-washable care, and decent room-darkening (BGment 84" Light Grey). Mid-Range: Balances look and function; longer lengths and cleaner colors (BGment 95" Pure White). Premium: Heavier-feel fabrics, richer colors and extra length for tall windows (BGment 95" Beige). Across tiers, watch for thickness and reported durability; spend a bit more if you need long-term sturdiness.

Which One Should You Choose?

If budget is tight → Choose the BGment 84" Light Grey (B07SL1FS59). It delivers thermal insulation and good light blocking at the lowest price, ideal for standard-height windows and renters. If you want the best overall balance of length, look and insulation → Choose the BGment 95" Beige (B07T86WRSJ). It’s the top pick for taller windows and rooms where appearance matters as much as function. If you want long panels but prefer a neutral, bright look at a mid-tier price → Choose the BGment 95" Pure White (B09JBP8DMV). It gives similar thermal benefits to the premium option with a cleaner aesthetic and slightly better value.

Best for Specific Scenarios

  • Tall windows or sliding doors: BGment 95" Beige (B07T86WRSJ) because the longer panels provide full coverage and a more finished, insulating seal at the floor.
  • Apartment or renter on a budget: BGment 84" Light Grey (B07SL1FS59) because it keeps upfront cost low while offering machine-washable care and thermal benefits.
  • Bright, modern rooms: BGment 95" Pure White (B09JBP8DMV) because white panels brighten spaces while still helping retain heat.

Frequently Asked Questions

Do thermal blackout curtains actually reduce heating bills?

Yes — they reduce heat loss through windows by adding a thicker insulating layer and blocking drafts when fitted properly. Results depend on fit, fabric weight and whether curtains are closed at night; honeycomb shades can achieve better insulation on a per-inch basis but at higher cost.

Are BGment thermal curtains machine washable?

Yes. The BGment sets reviewed specify machine wash on a gentle, cold cycle. Follow care instructions (no bleach, low tumble dry) to protect the thermal backing and color.

Which is better for a bedroom: blackout curtains or honeycomb shades?

For bedrooms where both darkness and insulation matter, blackout thermal curtains give a good combination of light control and heat retention plus decorative options. If insulation is the only priority for single-pane windows, honeycomb shades can offer higher insulating performance but with less variety in drapery-style looks.

How We Selected These Products

Our recommendations are based on data-driven analysis: we evaluated 279586+ products across 40813+ brands using a composite scoring system that weighs rating (40%), review volume (30%), price value (20%), and demand signals (10%). Every product is ranked by data, not opinions.

Reviewed by CozyMeter Editorial Team

Our team analyzes thousands of products and real customer reviews to find the best options in every category. We use data, not opinions.

Last updated: October 05, 2026

As an Amazon Associate we earn from qualifying purchases at no extra cost to you. Full disclosure.

CozyMeter Score is our editorial ranking based on a composite analysis of product quality, value, and verified customer sentiment. Click through to Amazon for current pricing, availability, and live customer reviews.

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