9 Ways Krypton Enhances Thermal Insulation for Windows

Unlocking the Benefits of Krypton Gas in Double Glazing

When it comes to thermal insulation performance, krypton gas in double glazing can offer the following benefits:

Lower U-value: Krypton gas has a lower thermal conductivity than air or argon gas, which means it can reduce heat transfer more effectively. This results in a lower U-value, indicating better insulation performance.

Increased energy efficiency: With improved insulation performance, double glazed windows with krypton gas filling can help to reduce energy consumption and lower heating bills.

Better thermal comfort: Krypton gas filling can help to create a more comfortable indoor environment by reducing cold spots and drafts near windows and doors.

Improved condensation resistance: Krypton gas in double glazing can help to reduce the risk of condensation forming on the inside of the glass, improving the lifespan of the windows and preventing potential damage caused by moisture.

Enhanced sound insulation: The high density of krypton gas can also help to improve sound insulation performance, reducing noise transmission from outside sources.

Higher durability: Double glazed windows with krypton gas filling are more resistant to thermal stress, resulting in a longer lifespan and lower maintenance costs.

Better insulation for smaller gaps: Krypton gas is particularly useful for filling small gaps in double glazed units, where its superior insulation performance can make a significant difference in reducing heat loss.

Lower risk of seal failure: Krypton gas is less prone to leakage than other gases, reducing the risk of seal failure and ensuring long-lasting performance.

Compliance with higher energy performance standards: In some cases, using krypton gas in double glazing can help to meet higher energy performance standards, such as those required for passive house certification

Krypton Gas Compared with Argon in Double Glazing for Windows and Doors pertaining to higher thermal insulation performance what will be numerical difference


The thermal insulation performance of krypton gas is generally higher than that of argon gas in double glazing. The primary reason for this is that krypton gas has a lower thermal conductivity than argon gas, which means it can reduce heat transfer more effectively.

The numerical difference in thermal insulation performance between krypton and argon gas can vary depending on the specific application, but typically, krypton gas can provide around 20-30% better insulation performance than argon gas. This is due to the higher density and lower thermal conductivity of krypton gas compared to argon gas.

While argon gas is still a good insulator and is more cost-effective than krypton gas, krypton gas is often used in applications where higher thermal performance is required, such as in extreme climates or for buildings that require a high level of energy efficiency. However, it’s important to note that the choice of gas used in double glazing also depends on factors such as cost, availability, and specific building requirements.

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