To maintain and clean your flexible air duct, follow these steps:

1. Regular Inspection: Regularly check the duct for wear, damage, or signs of deterioration. This makes it easier to spot any problems before they get out of hand.

2. Vacuuming: To get rid of dust and debris from the duct, use a vacuum with a hose attachment. Be careful not to damage the duct during this process.

3. Brush Cleaning: After vacuuming, use a soft-bristled brush to clean the interior surfaces of the duct. This step ensures that any adhering dirt or grime is removed effectively.

4. Disinfecting: Apply a duct cleaning solution to disinfect the ducts and inhibit mold growth. You can create a solution using water and mild detergent. After giving the ducts a few minutes to settle after applying this solution, rinse them with clean water.

5. Professional Cleaning: For thorough internal cleaning, consider consulting a professional duct cleaning service. They have the expertise and equipment to clean the ducts without damaging them or their insulation.

By following these steps, you can ensure that your flexible air duct remains clean and well-maintained, which contributes to the efficiency and longevity of your HVAC system.