Choosing new replacement windows is not only about picking a style that looks good from the street. The frame material plays a major role in how the windows perform over time, how much maintenance they require, how well they handle heat and sunlight, and how much long-term value they add to the home. In Southern California, those choices matter even more because homeowners are often balancing strong sun exposure, warm temperatures, changing design preferences, and the need for energy efficiency without turning every upgrade into a high-maintenance project.