Argon Filled Windows R Value

Low e or low emissivity coating is a unique microscopic glaze that helps minimize the amount of ultraviolet infrared and visible light from penetrating the glass keeping you cooler in the summer and warmer in the winter.

Argon filled windows r value.

Argon gas windows have an increased r value which is the measure of resistance to heat. The total heat transfer out of a window btu hr sq ft f or w sq m c. All c o g u and r values are based on ashrea winter conditions. Framing cladding frame type and other items will affect the overall thermal values of a complete window.

As mentioned above the increased r value is due to the the molecules being dehydrated and moving less. A gas filled window has an r value about. You might also like. Energy efficient windows use two or three panes of glass to slow conduction and maintain comfort.

An insulated argon filled double glazing unit 24mm can have a u value as low as 1 1. Regardless of the season low e argon gas windows ensure the climate is stable in your home. When used in conjunction with low e glass argon provides better insulation because heat and cold do not pass through argon gas as easily as through air providing better performance. Argon is a safe odorless colorless naturally occurring gas which is denser than air 40 denser than air.

4 building construction ff 1. The lower the number the better the glass. Being cheaper argon is usually used to fill the wider 1 2 inch spaces between panes in double pane windows while krypton. That s a 31 decrease in heat loss.

Chapter 4 building construction. The inert gases also don t move easily so gas filled windows have fewer internal air currents that can cause hot and cold spots in conventional windows. A virtually invisible low e coating is applied to the glass to help reflect heat and keep your home comfortable. Argon for instance typically increases the insulating r value of a window by only half a point.

Choose to add optional argon gas between the panes to act like an insulating blanket and reduce heat transfer. The amount of heat retained by the window. Thermally efficient argon filled window units have low r values. Windows with krypton fill tend to have lower u values better insulating quality and are more expensive than argon filled windows.

That means argon gas windows are more resistant to heat causing them to lose less heat during the winter. For the average detached you ll lose about 17 5 of heat through c rated windows and just 12 25 with an argon filled a rated window.