Should I leave my AC fan on all the time?
The primary benefit to leaving your AC fan running all the time is that it circulates air more frequently. This can help with more even heating and cooling inside the home. It can also help move cleaner air throughout the house, which helps allergy sufferers. Less frequent starts and stops of the fan can also extend its lifespan, because the stress of startups is reduced.
Unusual noises. High energy bills. Heat is on, but you’re shivering.