• Always check to make sure the unit's display is not showing the empty tank symbol. If shown drain the unit;
• Check the setting and make sure the room temperature is warmer then what the unit is set at;
• check that the exhaust hose is connected to the unit properly and make sure there are no kinks or bends in the hose;
• check that the filter is clean and free of dust and debris.

Note: if this does not resolve your issue you may contact our toll free number (For US 1-800-322-3848;  for Canada 1-888-335-6644) for assistance or look for the closest service center.

Please check the service locators in this website.