May 10, 20160 found this helpful
You can open the window, and from the side of the window frame, use a long drill bit and drill into the caulking that holds IGU together. Make a hole at the top and bottom to allow for air circulation to clean out the condensation. Use a blow dryer to blow air into the small bottom hole to speed up the window clearing. Don't push hard on your drill or you will crack the window if you don't find the exact middle between the window panes. If you miss the caulking start another hole above or below this hole and estimate if you should drill to the right or left to find the sweet spot of the caulking.