R-18 thermal performance

LuxWall Enthermal

World-class patented Transparent Insulation that transforms standard windows into energy-saving, sound-reducing assets.

Download data sheet
64% Visible transmittance
0.056 U-factor
0.26 Solar heat gain coefficient
77+ Condensation resistance
Proof in numbers

A step-change in building performance, backed by data.

R-18 performance

Delivers wall-level insulation in a profile 2X to 3X thinner than double pane glass.

OITC 32 sound rating

Engineered for quiet, Enthermal reduces outdoor street noise by up to 32 db.

3-10 year payback

Glass-only retrofits deliver a 3X to 5X faster payback and double-digit ROI.

Design flexibility

Maximizes daylighting while meeting building envelope energy codes.

20-year warranty

Exceeding industry durability standards, Enthermal is backed by a 20-year limited warranty.

Industry Certified

Certified by IGCC/IGMA and SGCC, and CE Marked under EU CPR.

Customize Enthermal™ to fit your project

Compare technologies

Enthermal™

Ideal for retrofits and new builds alike, Enthermal™ delivers R-18 insulation performance in a profile thinner than double-pane, transforming windows into walls of true comfort.

Choose a tint

None

Light Blue

Light Gray

Light Green

Bronze

Gray

Blue

Green

Insulation R-18 performance
Slim 8-12 mm profiles
Up to 5x the insulating power of traditional double-pane glass
Tinted outboard options

Tints are available in light green, light blue, light gray, bronze, green, blue, and gray.

Enthermal™ dimensions

Maximum: 60” x 96”, Minimum | 12” x 18”

Coated glass options

Cardinal 180, 270, 272, 340, and 366, SB 60 and SB70.

Enthermal thickness profile

8-mm, 9-mm, 10-mm, 11-mm, or 12-mm

Bird friendly solutions

2” × 2”, 2” × 4”, and 4” × 4” array with 5 mm or 6 mm dot or square patterns

Glass strength

Tempered Enthermal Tempered Enthermal with Heat Soak

Choose your Low-E coating.
Choose your effect.

Low-E coatings on the second surface of Enthermal let you fine-tune its thermal performance. Select a Low-E coating to optimize visible light transmission, passive solar design, insulation performance, or elevation-specific conditions. 

Explore the table below to see how each Low-E coating product performs. 

Visible LightFadingU-Factor
CoatingVisible Light TransmittanceExterior ReflectanceT-UVT-UV DW ISOSHGCU-Factor
IP / SI
LSG
Cardinal LoĒ-18078%15%26%610.620.084 / 0.481.25
Cardinal LoDz-270®69%12%13%500.350.062 / 0.361.96
Cardinal LoDz-272®71%11%15%540.400.067 / 0.391.79
Cardinal Lodz-340®38%13%2%270.160.055 / 0.322.42
Cardinal Lodz-366®64%11%5%420.260.055 / 0.322.48
Solarban 60®72%11%19%540.380.063 / 0.361.89
Solarban 70®66%13%6%440.260.056 / 0.322.57

Enthermal™
Spandrel

Built on the same Transparent Insulation core as Enthermal™, Enthermal Spandrel replaces bulky shadow boxes with a slim, opaque panel that matches the look and performance of vision glass. It delivers superior thermal efficiency, condensation resistance, and a clean, continuous façade. 

Keep the outside, outside

Enthermal™ blocks unwanted heat from the sun and prevents indoor warmth from escaping, keeping buildings comfortable and energy-efficient all year long.

Where numbers add 
up to comfort

Enthermal™ doesn’t just promise efficiency — it delivers. Independent metrics show better insulation, steadier temperatures, and reduced energy loss.

50% cut in energy use

Cuts energy use up to 50% versus single pane; 35% vs. double pane.

50% noise reduction

Up to 50% noise reduction compared to single-pane glass; 20% vs. double pane.

60% CapEx savings

Up to 60% CapEx savings with LuxWall’s Glass-Only Retrofit, when existing frames are retained.

How Enthermal™ compares

Compare Enthermal Plus™ to double-pane, thin triple-pane, triple-pane, and Enthermal™ windows – on the metrics that really matter.

Name
Double-Pane
Thin-Triple
Triple-Pane
Enthermal™
Enthermal
Plus™
R-Value
R-2–4
R-5
R-6–7
R-18
R-22
U-Factor (BTU/hrft²F)
0.251
0.190
0.119
0.055
0.045
U-Factor (W/m²K)
1.40
1.10
0.70
0.30
0.26
Energy Savings
10–20%
15-20%
25–30%
Up to 50%
Up to 50%
Noise Reduction
Low
Low-Moderate
Moderate
Up to 50%
Up to 50%
Profile Thickness
24–30 mm
25 mm
35–40 mm
8–12 mm
25 mm
Installation
New frame needed
New frame needed
New frame needed
No need to replace frames
No need to replace frames
Payback
10–15 yrs
8–12 yrs
8–12 yrs
3–10 yrs
3–10 yrs

Enthermal™ maintains optimal indoor temperatures

Keeping spaces warmer in winter and cooler in summer compared to traditional glazing. The result: consistent comfort, reduced HVAC strain, and lower energy bills.

Winter performance
Enthermal™ R-18 Transparent Insulation delivers the warmest interior surface temperatures, preventing cold drafts and discomfort near windows, even in freezing conditions.

Summer performance
Enthermal™ R-18 Transparent Insulation delivers the coolest interior surface temperatures, helping maintain cooler temperatures and reduce cooling energy demand during summer months.

"By replacing outdated window panes with LuxWall’s Transparent Insulation, which offers an R-value of up to R-18, we eliminated the cold zones that had long existed near our windows. Enthermal performs like a transparent insulated wall, keeping interior spaces consistently warmer throughout the winter months."
Ahmed Malik Welcome Law Firm

Results that speak for themselves

Partnering with a property management firm, LuxWall’s Enthermal™ delivered measurable energy savings and acoustic improvements — proving high-performance glazing can drive value without design compromise.

19pt

Increase in Center of Glass R-Value

9°F

Increase in Center of Glass Temperature

Specify LuxWall on your next project.

We’ll partner with you to integrate Enthermal™ technology into any building type, from historic to new construction. Get performance data and specification support tailored to your project.

Common questions

Compare Enthermal™ to single, double, and triple-pane windows—on the metrics that really matter.

A high performance glazing solution that uses a vacuum gap between glass panes to minimize heat transfer, delivering exceptional energy efficiency, noise reduction, and comfort.

Instead of using air or argon gas for insulation, Enthermal™ uses a near-perfect vacuum to dramatically reduce thermal conductance, convection, and radiation, increasing insulating performance.

Enthermal™ is available in 8 mm, 9 mm, 10 mm, 11 mm, and 12 mm thicknesses, using combinations of 4 mm, 5 mm, and 6 mm glass panes.