Do you want to know if your vents are open or closed? The best way to check is by feeling the air flow. Place your hand in front of the vent and if you can feel the air coming through, then the shock absorbers are at least partially open. If you don't feel any air, then the shock absorbers are likely closed. For manual shock absorbers, a parallel damping lever indicates that the shock absorbers are open.
With automatic shock absorbers, an open damper plate will show a gap and a closed plate will cover the duct to block air flow. If you're still unsure whether your vents are open or closed, you can also check for signs of dust or debris. If there is dust or debris around the vent, then it's likely that the shock absorbers are closed. It's important to make sure that your vents are open so that air can circulate properly throughout your home. This will help keep your home comfortable and reduce energy costs.
