The current study was conducted to determine the effectiveness of a home-based nebulizer educational intervention (NEI) for young children with asthma. The intervention was designed to teach early symptom recognition, appropriate medication use and nebulizer technique for home treatment of acute asthma episodes. Study outcomes included symptom frequency, activity limitation, emergency department (ED) visits and hospitalizations, appropriate asthma medication use and nebulizer practice. We hypothesized that children receiving the NEI would demonstrate improvement in appropriate nebulizer and asthma medication use and decreased asthma symptoms, activity limitation, ED visits and hospitalizations.