Modern double glazed windows are no longer just two layers of glass in a frame, installing highperformance, gas-filled windows is a home improvement project that will make a homes more energy-efficient and comfortable.

Why? Because filling the space between the glass panes with gasses such as argon minimizes the convection currents within the space. That reduces the overall transfer of heat between the inside and outside of the house. The union of gas and glass firmly stands together to block harmful ultraviolet sunrays and heat transfer, which are major causes of high-energy costs, faded flooring and condensation build-up.

Q. How does the gas filling in these windows like argon filled windows provide all of these benefits?

Because gas-filled windows are better at resisting heat flow and better at insulating, giving them a lower U-factor. * Gas-filled windows have significantly lower u-factors, thereby reducing energy costs. They also make the home more comfortable by reducing the amount of solar radiation coming through the glass in hot climates, while maintaining a higher interior temperature during winter.The higher temperature of the interior glass surface also reduces frost and condensation.

Gas Filled Windows vs. Multi-Paned Windows

Most multi-paned windows are filled with air or flushed with dry nitrogen prior to sealing. This creates a high level of conduction within the panes and a low level of insulation, which makes them lose valuable heat in cold climates, and generate unwanted heat in warm weather.

* Insulation is measured in U-Values, the lower the figure the better the insulation.

There are various components used in the construction of double glazed units to obtain the required U-Values. Clear Glass, Emissivity glass, inert insulating gases and spacer between the glasses.

Single glazing has a U-Value of 5.4

Gas filleed cavity windows can have U values as low as 1.6