Single Hung Window

​What Is a Single-Hung Window?

A single-hung window features two vertically aligned sashes, with ​only the bottom sash operable (sliding up/down) while the top sash remains fixed. Known for its classic design, this window balances affordability, energy efficiency, and ease of use, making it a popular choice for traditional, colonial, and bungalow-style homes.

Key Features & Benefits

  1. Energy Efficiency:
    • Fewer moving parts reduce air leaks, improving thermal performance and lowering heating/cooling costs.
  2. Low Maintenance:
    • Tilt-in lower sash simplifies cleaning; fixed upper sash requires minimal upkeep.
  3. Cost-Effective:
    • Installation averages 25–$100), ideal for budget-friendly replacements.
  4. Durable Materials:
    • Vinyl (low maintenance), wood (classic look), aluminum (strength), or composite (longevity).
  5. Standard Sizes:
    • Widths: 24″–48″; Heights: 36″–72″. Fits most homes without custom fabrication.

ABOUT Single Hung Window FAQ

Single-hung windows have ​only one movable sash (bottom), while double-hung models allow both sashes to slide. Single-hung designs offer tighter seals and simpler mechanics.

Yes! Reduced air infiltration from fewer moving parts improves insulation, lowering HVAC costs.

  • Vinyl: Affordable, low-maintenance.
  • Wood: Natural aesthetics.
  • Aluminum: Durable, corrosion-resistant.
  • Composite: Hybrid performance.

Tilt the lower sash inward, wipe with mild detergent. Clean the fixed upper sash from inside or with exterior access.

Standard widths: 24″–48″; heights: 36″–72″. Larger sizes may increase cost and lead time.

Avg. 25–$80). Costs vary by complexity and location.

Yes! Ensure the fixed top sash aligns with existing frames and meets local codes.

Bottom-only opening limits airflow, but pairing with other windows/vents ensures balanced circulation.

Use sash locks, reinforced glass, or security bars. Fixed upper sash reduces intrusion points.

15–30 years with proper maintenance. Material quality and climate impact longevity.

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