Are single hung windows safer?
Single-Hung Windows are more secure. Providing your windows are well-maintained, installed, and shut correctly, both window types should be very secure. However, if you don't close the upper sash properly on double-hung windows, gravity can pull the pane down in the frame—meaning it won't lock.
Why choose single hung windows?
Single hung windows are so popular because they're an economical window replacement choice for homeowners on a budget. They're more cost-effective to order and install than their double-hung window counterparts. Between the two, they provide more energy efficiency against air leaks since there are fewer moving parts.
How long do single-hung windows last?
The average lifespan of residential windows is 15 to 30 years. Well-maintained products may last beyond the 20-year mark, but once your windows start approaching two decades old, it's time to think about replacing them.