More affordable. Single hung windows are typically less than double hung. If you’re replacing a lot of windows at once, that adds up fast.
Fewer moving parts. Less hardware means less to go wrong over the life of the window.
Energy-efficient. Because only one sash moves, single hung windows tend to seal a little tighter than double hung — which can mean slightly better energy performance.
Clean, classic look. Single hung windows are timeless. They work with traditional, transitional, and modern homes.