Coaxial cable, just like everything, has a lifespan. The white dielectric foam can degrade, the center conductor can get kinked and nicked, the connector can start to oxidize. Plastics and rubber parts can begin to break down, especially if they've been painted over. So look, keep old cables if you want.

How often should you replace your coax cable?

What is the life expectancy of coax cables? Outdoors, your coax cable will last for 20 years. If it is underground, you can add a few more years to it.

Does coax cable go bad over time?

Coaxial cable is more susceptible to damage when compared with other cable types like category cables and power cables. ... Heat Damage – coaxial cable susceptible to heat damage. The interior insulator can warp causing loss of video quality. Connector Damage – Connectors can go bad from constant use.