Do home inspectors actually test if windows work properly or just look at them?

Home inspectors typically perform basic operational tests on windows, not just visual inspections. Most qualified inspectors will open and close accessible windows to check basic functionality, though the extent varies by inspector and accessibility.

Standard window testing during inspections includes checking if windows open and close smoothly, testing lock mechanisms, examining weatherstripping condition, and looking for obvious air leaks or water damage. Inspectors will note windows that are painted shut, have broken sash cords, or show signs of seal failure in double-pane units. They'll also check for proper drainage in window wells and look for gaps in caulking around the frame.

However, home inspectors have limitations in their window assessments. They won't perform energy efficiency testing, measure air leakage rates, or test windows during weather events. Upper-story windows may only get visual inspection if they're not safely accessible. Inspectors also won't typically test every single window in a large home due to time constraints.

In Ottawa's climate, inspectors often pay special attention to signs of ice damming around windows, condensation issues that suggest poor insulation, and frost buildup patterns that indicate air leaks. They'll note obvious energy efficiency concerns but won't provide detailed thermal performance assessments.

If you're buying a home, consider the inspection a starting point for window evaluation. Older windows that "work" during inspection might still benefit from replacement for energy efficiency. Windows over 15-20 years old in Ottawa often need upgrading to meet current energy standards, even if they open and close properly.

For a comprehensive window assessment beyond a basic home inspection, consider having a qualified window installer evaluate energy efficiency and long-term performance needs.