A number of signs could indicate your windows need replacing:
It’s difficult to open or close the window.
The area near the window is drafty.
Your energy bill has suddenly increased.
The window has a rotting frame, chips or damaged glass.
You hear a lot of noise from outside when the window is closed.
Interior furnishings are fading.
The window is 15 years old, has a single pane of glass or isn’t ENERGY STAR-certified.
Leaving a poorly functioning window in place may lead to higher energy costs, safety issues or even water damage .