Not necessarily. Condensation is a multifaceted interior environmental issue. Energy-efficient windows will significantly decrease condensation but, because of other factors, may not eliminate it altogether. Managing humidity and airflow in your home plays a large part in the elimination of condensation. During the winter months, use your dehumidifier or open up your fireplace damper (if applicable) to let the moist air out. You can also open up the drapes and the blinds in your home to let warm air circulate around the windows.