Window film can improve how an existing window performs without replacing it. By moderating solar heat gain at the glass, film helps interiors stay more even in temperature and reduces the work asked of cooling equipment through the warmer months. It also reduces glare and ultraviolet, which makes rooms with large glazed areas easier to live in. Because the film is applied to the glass you already have, identifying that glazing first matters: single pane, double glazed, coated and laminated units all respond differently, and the right film is chosen to suit the unit. A Kepler dealer can assess your windows and recommend a suitable range.