The weather is changing and all of a sudden you may see things happening inside your house or condo. The most obvious thing is condensation on windows. This is normal. It may not happen on all of your windows, and it may not even be happening on the windows of some of your neighbours. It does not mean that your windows are defective.
Condensation can cause problems and damage if you don’t keep it under control. Make sure you keep your sills dry so the water doesn’t drip down onto your drywall. Another tip is keep the window open a tiny bit if you can, and make sure all window treatments are open during the day to allow air flow around the window.
The most important thing to remember is that any damage caused by condensation is your responsibility to fix, not the builders. So be very diligent about air flow, keep proper humidity levels in your home, and keep your windows dry.