Cost◆Patch

Single-Hung vs Double-Hung Window: Cost, Maintenance, and When Each Wins

Single-hung windows (only the bottom sash moves) cost $280–$650 per window installed; double-hung windows (both sashes move) cost $380–$900 installed — a 25-50% premium. For a typical home replacing 12 windows, that's a $1,200–$3,000 difference. Double-hung wins on cleaning ease (you can tilt both sashes inward) and improved ventilation. Single-hung wins on price, slightly better insulation, and lower long-term mechanical failure risk. For most homes, the smart play is double-hung on bedrooms (cleaning + ventilation matters) and single-hung on living rooms and basements where the bottom sash is sufficient.

TL;DR — 2026 ranges

  • Single-hung window installed: $280–$650 each
  • Double-hung window installed: $380–$900 each
  • Premium difference: +$100–$300 per window
  • 12-window home replacement difference: +$1,200–$3,000 total
  • Single-hung lifespan: 20–30 years
  • Double-hung lifespan: 15–25 years (more mechanical parts)
  • Cleaning ease (interior, multi-story): Double-hung wins
  • Air infiltration (sealed performance): Single-hung slightly better

How each window type works

Single-hung windows

Two sashes — only the bottom one moves. The top sash is fixed in place. You raise the lower sash to open the window, and only the lower half ventilates. The simplest and oldest design, dating from the 1700s.

Double-hung windows

Both sashes move independently. You can raise the lower sash, lower the upper sash, or open both partially. Modern designs include "tilt-in" features where both sashes can pivot inward for cleaning the exterior from inside.

Cost breakdown — what drives the difference

Where double-hung is worth the premium

Where single-hung is the smarter choice

Long-term mechanical failure comparison

Double-hung windows have more moving parts, which means more failure modes over time:

Net long-term: expect $150-$400 in mechanical repairs on a double-hung window between years 10-25; single-hung is closer to $0-$150 in the same period.

Quality grades — what to actually buy

Frequently asked questions

Is a double-hung window worth the extra cost?
For bedrooms in multi-story homes and rooms where ventilation matters: yes. For basements, single-story rear windows, and budget-driven whole-house replacements: probably not. Selective use (double-hung on 4-6 key windows, single-hung on the rest) maximizes value.
Can I clean a double-hung window from inside?
Yes, on tilt-in models (most modern double-hung windows). Release the tilt latches and pivot each sash inward. Clean both sides of both panes from inside. Major safety improvement for upper-story windows.
Which type is better for energy efficiency?
Single-hung is marginally better. Less linear seal length and one fixed sash means lower air infiltration on average. The difference is typically 5-10% on energy performance — small enough to be dominated by glass type (Low-E coating, gas fill) and installation quality.
What's the difference between hung and casement windows?
Hung windows slide vertically (up/down). Casement windows hinge open like a door (typically operated by a crank). Casement windows offer the best air seal when closed but require swing-out clearance. Different price tier and use case.
Can I install a double-hung window in a single-hung opening?
Yes, if the rough opening size is the same. Single-hung and double-hung windows of the same nominal size use identical rough openings — only the sash mechanism differs. Direct swap with no framing changes typical.
Do double-hung windows leak more air?
Slightly, on average. The additional movable seal at the meeting rail is a potential leak point. Quality double-hung windows with proper weatherstripping perform very close to single-hung; budget double-hungs leak noticeably more.

Related cost guides

Pricing data compiled 2026 from CostPatch research panel across 50 US states. National ranges reflect typical professional installation/repair scope; outlier high-end work may exceed ranges. See methodology for sourcing.