Double-pane windows typically last between 20 and 30 years, depending on the quality of materials and installation. Over time, the seals may weaken, causing condensation between the panes, which can affect performance. Regular maintenance and prompt repairs can extend their lifespan.

Double-pane windows are a long-term investment, providing enhanced insulation and noise reduction. Proper installation and maintenance are crucial to ensure they last for decades. The quality of materials and the environment can influence their durability, but most modern double-pane windows offer 20-30 years of reliable use.