Double-hung vs. single-hung: the one difference that matters
Both styles are vertical windows with two stacked sashes. On a single-hung window, only the bottom sash slides up; the top sash is fixed. On a double-hung window, both sashes move, so you can lower the top sash, raise the bottom one, or open both a little at once.
That second moving sash gives you two practical advantages. Opening the top and bottom together lets warm air leave high while cooler air comes in low, which is handy on a summer evening when the delta breeze arrives. And most double-hung sashes tilt inward, so you can wash the outside glass of a second-story window from inside the room.
| Single-hung | Double-hung | |
|---|---|---|
| Moving sashes | Bottom only | Top and bottom |
| Clean exterior glass from inside | Usually not | Yes, on tilt-in models |
| Ventilation options | Low opening only | High, low or both |
| Parts that can wear | Fewer | More balances and seals |
| Typical installed price (national) | $250–$700 | $300–$1,000 |
Where each style fits in a Sacramento-area house
Upstairs bedrooms and hard-to-reach glass
On a two-story stucco house, the outside of an upstairs window is a ladder job. Tilt-in double-hung sashes solve that, which is the main reason homeowners pay the step up from single-hung for second-floor rooms.
Ground floor and budget-driven projects
Where you can reach the glass from the yard and only need to open the bottom half, single-hung is a sensible way to spend less. It has fewer moving parts, and the fixed top sash seals tightly. Many whole-house jobs mix the two: double-hung upstairs, single-hung on the ground floor.
Older houses with traditional looks
Hung windows with grids suit Craftsman bungalows, older East Sacramento and Land Park-style homes, and any house where the street view matters. If the house is in a historic district within the City of Sacramento, talk to the city's planning staff before choosing a frame material or grid pattern. For a wood look, see wood windows.
What double-hung windows cost
These are national installed ranges from Fixr's window cost guide. We have no Sacramento-specific price data, and real quotes depend on size, frame material, glass package and whether the job is an insert or full-frame install.
| Item | Typical national range |
|---|---|
| Single-hung, installed | $250–$700 per window |
| Double-hung, installed | $300–$1,000 per window |
| Vinyl frame, any style | $350–$800 per window |
| Fiberglass frame, any style | $400–$1,500 per window |
| Wood frame, any style | $600–$2,000 per window |
Frame material moves the price as much as the operating style does. Compare vinyl windows and fiberglass windows, and see window replacement cost in Sacramento for the full breakdown.
Energy code for replacement hung windows in 2026
Sacramento and its suburbs sit in California climate zones 11 and 12. Under the 2025 Title 24 energy code, in force since January 1, 2026, both zones use the same limits for replacement windows:
- U-factor 0.27 or lower and SHGC 0.23 or lower for most replacement jobs.
- If the whole job is 75 sq ft of window or less, the allowance is U-factor 0.40 and SHGC 0.35.
- Replacing only the glass, or only the sashes in an existing frame, counts as a repair, as long as the new part performs at least as well as the old one.
The low SHGC number matters on hot summer afternoons, when west-facing bedrooms collect heat well into the evening. Ask the installer for the NFRC label values on the exact product, and leave the temporary label on the glass until the inspector has seen it. More on glass packages in energy-efficient windows.
Bedroom windows and emergency exit rules
A bedroom window is also its emergency exit, and hung windows only open halfway, so the clear opening is smaller than the window looks. California's egress section is CRC R319. For new egress openings it calls for at least 5.7 sq ft of net clear opening (5.0 sq ft on a grade floor), a clear height of at least 24 in., a clear width of at least 20 in., and a sill no more than 44 in. above the floor.
Inside the City of Sacramento, the building division's retrofit guidelines (form CDD-0327) allow a replacement to meet the egress rules in force when the house was permitted, as long as the new window does not make things less safe. The permit scope has to say so and give the year the house was built, and the inspector checks it at final.
Switching a bedroom slider to a hung window, or the other way around, changes the clear opening. Ask the installer to confirm the net clear area of the proposed unit before you order.
Getting a double-hung replacement quoted
- Decide which rooms need tilt-in double-hung and which can go single-hung.
- Ask whether the quote is an insert or full-frame install. See retrofit windows for the difference.
- Get the U-factor and SHGC for each unit in writing.
- Confirm who pulls the permit. Sacramento County has required a permit for window replacement since 2010; for cities, check with the local building division.
- Verify the installer's C-17 or B license at cslb.ca.gov. California law allows an up-front payment limited to 10% of the job or $1,000, whichever comes in lower.
When you're ready, we'll match you with an installer for window replacement in Sacramento who handles hung windows.
Main guide: window replacement in Sacramento.