I have a Goodman gas furnace/ac package unit and every winter the rollout limit switch has to be replaced. This started 3 years ago and has happened about the same time every year. What could be causing this to happen. The part is not expensive, but it is just bothersome. I live in Hampton Roads Virginia so it's not like it gets artic cold here.

I would be getting someone to look at possible flame rollout causing the problem, and then what is causing
You might have rollout caused by bad heat exchanger which could be dangerous