This is a fair question! It makes a lot of sense to understand what can go wrong if you don't have a service performed. So let's take a look at what can go wrong if you do not clean your dryer vent.
Failing to to perform regular dryer vent cleaning causes lint to accumulate within your ductwork to the point that it becomes a fire hazard. But it also causes the following major issues:
It is common for a customer to repair or replace their dryer several times before realizing that the precipitating issue was a dryer vent that needed to be serviced. It's unfortunate, but many times it takes a major issue like this for people to become aware that dryer vent cleaning is essential to maintain.
The worst possibility of all, however, is a house fire due to the lack of dryer vent cleaning. The National Fire Protection Agency estimates roughly 16,000 laundry related home fires each year. A dryer can be replaced, a vent can be repaired...but the people in the house are irreplaceable.
We highly recommend getting on a cleaning plan in order to ensure proper upkeep with your dryer vent system.