The cracking of a double-pane window on the inside can be attributed to several factors:
This is a common issue with insulated glass units (IGUs). Here’s a practical guide covering why it happens, temporary fixes, repair vs. replacement, and how to proceed. double pane window cracked on inside
Dealing with a Double Pane Window Cracked on the Inside: Causes, Fixes, and Prevention The cracking of a double-pane window on the
Many modern windows come with a 10-year or lifetime warranty that covers "spontaneous glass breakage" or stress cracks. Contact your installer or the manufacturer before calling a glass shop. repair vs. replacement
A crack in the glass compromises the sealed unit's ability to insulate. Moisture can seep into the gap between the panes, fogging up and reducing the window's ability to keep the house warm or cool.