Because glass makes up the majority of a window’s surface, better glass means better energy efficiency. The original HP glass system, available in each GrandView™ line, features one lite of soft coat, 7/8” single-surface multilayer vacuum-deposition Low-E glass and an insulating chamber filled with argon gas. Argon gas is 40% denser than air* to better prevent the transfer of heat through the unit.

*Figures courtesy of Linde Gas Inc.

The HP2 Glass System, available on GrandView™ 4000 and 5000 windows and patio doors, has two lites of Low-E glass and an insulating chamber of argon gas. The 7/8” dual-surface multilayer vacuum-deposition Low-E insulated glass units with argon gas makes these windows nearly five times more energy efficient than single pane glass.

The HP Max Glass System, available on GrandView™ 5000 windows and patio doors, is triple pane assembly combining two lites of multilayered vacuum-deposition Low-E insulating glass with an interior glass substrate which provides two insulating chambers of argon gas. The result is an insulated glass unit that is nearly six times more energy efficient than single pane glass. GrandView™ windows with the HP Max glass system provides you with the technology to maximize your energy savings.