Posts Tagged: automotive HVAC

When to Use the Car Air Recirculation Button

When to Use the Car Air Recirculation Button—and When You Shouldn’t Quick Summary The car air recirculation button is one of the most misunderstood controls on your climate panel. When the air recirculation button is off, your HVAC system defaults to bringing in about fresh air. In that mode, about 15% of the air blowing through the ducts is fresh air, with 15% of the stale air exiting the vehicle through vents behind the rear seats. Fresh air reduces the risk of CO2 buildup in the cabin and eliminates the … Read More