The cabin air filter is an essential part of your vehicle's HVAC system. However, it doesn't last forever. Here's how to tell ...

You know this story well. Your car goes to the shop for a routine job like an oil change or a tire swap, and that’s when the service advisor calls you with a tried and true upsell: the cabin filter.

While a cabin air filter does a different job than the engine air filter, it is still just as important to replace. Here's what happens if you don't.