Our technical support team can assist you should you have any questions about your Airedale humidifier. Order from the source of Airedale humidifier cylinders and parts just like the contractors do. You will find on-line owners manuals as well as exploded views of your model on its associated humidifier parts page. Remember to replace your Airedale Steam tank at least once per year for optimal operation. Most Airedale Steam humidifiers will bring up a warning sign when the steam tank fails. Data Aire Systems uses the Vapac brand of humidifiers in all their units and we are the contractors and owners source for those parts.