Here are 5 signs that you need to replace your windows if you live in a very wet environment like the greater Seattle area:

1. Rotting or Warping - If you notice that your windows are beginning to warp or rot, it may be time to replace them. These signs of damage can be caused by excessive moisture in the air, and they can lead to leaks and other problems if not addressed.

2. Difficulty Opening or Closing - If your windows are becoming difficult to open or close, or if you notice that they are sticking or rubbing against the frame, this could be a sign that they have become warped or damaged due to moisture.

3. Leaks or Drafts - If you notice that your windows are leaking or that there is a draft coming through, this could be a sign that the seals or frames are damaged or that there are gaps in the window that are allowing moisture to enter.

4. Condensation and Fog - If you notice that there is a lot of condensation or fog on the inside of your windows, this could be a sign that they are not providing an adequate barrier against moisture. This can also lead to mold and mildew growth in your home.

5. Increased Energy Costs - If you notice that your energy bills are increasing even though you are using your HVAC system less, this could be a sign that your windows are not providing adequate insulation. This can result in increased heat loss during the winter months and increased heat gain during the summer months, both of which can drive up your energy costs.

By paying attention to these signs, you can determine whether your windows need to be replaced and take steps to protect your home from the damaging effects of moisture.