Q&A for How to Stop Condensation on Windows

If you're getting condensation on a glass window, it usually means that the glass in between the panes of glass has failed. If that happens, you really need to replace that piece of glass.

If you're getting condensation on a single pane piece of glass, you should probably install a storm window. That will create a barrier between the outside, significantly lessening the moisture on the inside.

Condensation is usually a sign that there’s too much moisture inside your home. It’s most likely to happen in winter or overnight when there’s a greater difference in temperature between the outside and the inside. Moisture from the warm air indoors condenses when it comes into contact with cold windows.

Condensation inside a car typically happens when it’s cold outside and there are sources of moisture inside the car, including damp clothes, wet spots on the floor from your shoes or boots, hot and steamy beverages, and even your own breath! You can minimize interior condensation by hitting the defrost button as soon as you get into the car. You can also try putting a moisture absorber in your car.

It's a function of the inside humidity and the temperature of the storm window glass.

In some cases it could help. It depends on the outside temperature and inside humidity.

Check that the dryer is operating at normal temperature and that the vent is not blocked.

It depends on the outside temperature. Generally, 40% good, but if it's quite cold outside, you might want slightly lower humidity inside.

Get an HRV installed. I did and it’s been like magic as compared to previous winters. Went from multiple rounds of wiping windows on very cold winter mornings to not a drop of moisture on any window three months into this winter.