• Major Components: Typically last 5-15 years (e.g., springs, door, motor).
• Smaller Parts: Average lifespan is 3-8 years (e.g., hardware).
• Rollers and Weather Stripping: Need replacement every 2-4 years.

Signs of Aging Parts

• Rollers: May bend or stop spinning, making the door harder to open/close and causing noise and friction.
• Springs: Rusted springs can strain the motor, especially with heavy doors.