Window film changes how much solar energy your glazing lets through, which is why homeowners look at it as a comfort measure across a Connecticut year. In summer, solar control film reduces the heat load on rooms that face the sun for hours at a time, so cooling has less to fight against. Alongside that, the same film usually softens glare and helps limit UV exposure, so the room becomes easier to use rather than simply darker. Film is applied to the glass you already have, which is why it is often considered where full window replacement is not practical. Results depend on the film, the shade and the glazing it is fitted to, so identify the existing windows and talk the options through with a dealer before committing to a specification.