The value that new windows add to your house can vary depending on several factors, including the quality of the windows, the materials used, the overall condition of your home, and local market conditions. However, in general, replacing windows can enhance both the aesthetic appeal and energy efficiency of your home, which can contribute to an increase in its overall value.

Moreover, energy-efficient windows can provide additional value by reducing energy consumption and lowering utility bills over time. Homebuyers often prioritize features such as energy efficiency, so installing windows with high energy performance ratings can make your home more attractive to potential buyers and potentially increase its resale value.

Ultimately, while the exact value added by new windows can vary from one property to another, investing in quality windows is generally considered a wise decision that can enhance the overall appeal and value of your home.