Water should be drained from the air compressor storage tank how often?

• A. every week
• B. every day
• C. monthly
• D. only when full

Answer: (B)

Moisture has to be removed from the storage tank regularly because compressed air carries condensate that forms every time the air is produced. If you wait longer than daily, that condensate can pool, causing rust inside the tank, corrosion of components, and water in the hoses and tools. Draining the tank daily helps keep the system dry, maintains air quality, and protects equipment. Draining only when full ignores the fact that moisture collects continuously and can cause problems regardless of how full the tank is. Draining monthly or weekly would let too much water accumulate, increasing the risk of damage and poor air performance. If there’s an automatic drain, still check it regularly to ensure it’s functioning properly.