Does Opening A Window Reduce Humidity. Above that range and you can begin to see problems like sweating on the panes of window. However you dont want to do this too much when your air conditioner is running.

Sometimes just opening your window will help lower your humidity levels. These improvements will not only reduce moisture but theyll make your home more energy-efficient year-round. If the humidity is a result of your air conditioner not working you should contact an HVAC technician to have a look.
Your air conditioner will filter out moisture and pump crisp clean air into the home and you can achieve similar results by opening your windows on a cold winter afternoon.
The short answer is yes it does in most circumstances. But there is a catch. As a result homeowners should lower the relative humidity levels in your home during the cold winter months. Comfortable and safe humidity levels should be no more than 35 to 40.
