Humidification Division Rep Locator Please Call For International Reps Available. How to use this map: Mouse-over and click on a state that best represents the location of installation. A small window will open and show you the available reps name, phone/fax numbers, and email addresses of available representatives in your location. If you have any question or need further assistance, please call us at: 616.257.8830. For all other inquiries or parts request, please call: 626.359.4550