Replacing a window frame will improve your home’s energy efficiency if the old frame is cracked or damaged in a way that allows unconditioned air from the outside into your living space or if you upgrade to a more energy-efficient window frame material. Aluminum is the least energy-efficient window frame material, followed by vinyl and wood. Fiberglass and composite frames are the most energy-efficient.

Energy-efficient windows are judged on their performance according to a few different factors, including heat transfer, air leakage, light transference, and condensation resistance. If you're unsure whether a window is energy-efficient, look for an ENERGY STAR® label from the U.S. Environmental Protection Agency (EPA). If various products, including windows, meet energy-efficiency standards set by the federal government, the EPA issues this label to help consumers identify energy-efficient products.

The average cost for home window tinting is around $600, with most homeowners paying between $150 and $1,600. Costs can also be calculated per square foot, typically ranging from $2 to $100, or per window at around $75 each. For example, tinting one or two windows might cost between $200 and $350, while a larger project of 13 to 15 windows could range from $4,124 to $4,747.

Several factors influence the total project cost, with the number and size of the windows being the most significant. Other key factors include the type, shade, and quality of the tint film, as well as labor costs. Additional treatments, such as low-emissivity (low-E) coatings, can also increase material costs.

Window tinting offers several benefits, such as making your home more energy-efficient by blocking harsh sunlight, protecting furniture from fading, and increasing privacy. For this reason, many homeowners choose to tint only the windows in specific areas where direct sunlight and privacy are primary concerns.

Visibility through tinted house windows or privacy film depends on the lighting. During the day, the tint or film typically prevents people from seeing inside. However, at night, if you have lights on inside your home, the interior will be brighter than the outside, which allows people to see in. You can choose from various shades of privacy film, from lighter to darker, to optimize the level of privacy you want.