Count openings, not panes
Enter the number of openings you intend to replace. Multiple panes inside one window are not separate openings. Mixed styles may need separate estimates to make the assumptions clear.
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Window replacementWindow replacement cost calculator
Estimate one replacement window or a whole-house project. Choose the opening count, frame, glazing and installation method to see window units, labor, disposal and a total planning range. US dollars; no email required.
Reviewed 25 October 2026 · Written by Mantu Kumar
See the illustrated project guide
Written and maintained by Mantu Kumar
Evidence review4 August 2026
Calculation rulesRead the methodology
Quality standardEditorial policy
2026 planning ranges
- 1Insert installation · $975–$2,060 per window
- 2Old frame stays; capping over trim
- 3Window units · $495–$800 each
- 4Full-frame, 1 window · $1,325–$2,730
- 5Sill pan, flashing, rot repair
- 6Disposal & permit · $180–$620 / job
- 7Vinyl, fiberglass, wood
- 8Second- and third-story
- 9Double or triple pane
Ten windows: Insert install $8,130–$15,020 Full-frame $11,630–$21,720
Window replacement cost estimate
No email · nothing sentDiagram, part by part
Window replacement: every numbered part explained
The window replacement drawing above has 9 numbered parts, from Insert, 1 window to Glass package. Each card below frames one of them, and after you run the calculator it shows what that part adds to your estimate.
1 Insert, 1 window
$975–$2,060
An insert replacement fits a new window inside the existing frame. It is faster and cheaper but slightly reduces the glass area.
What moves it: Window size, style and the condition of the old frame.
On the quote: Ask how much glass width is lost and how the gap is insulated.
2 Old frame stays; capping over trim
Part of an insert job
With an insert, the old frame and interior trim stay; aluminum capping covers the outside frame to protect it from weather.
What moves it: Frame condition and trim style.
On the quote: Check that rotten frames are not simply capped over.
3 Double-hung unit
$495–$800
The window unit itself. Double-hung vinyl is the most common; fiberglass, wood and casement units cost more.
What moves it: Style, material, size and glass.
On the quote: Compare U-factor and glass package, not only the price.
4 Full-frame, 1 window
$1,325–$2,730
Full-frame replacement removes the whole old window down to the rough opening, so rot can be fixed and new flashing installed.
What moves it: Siding type, trim and the condition of the opening.
On the quote: Ask whether interior and exterior trim are included.
5 Sill pan, flashing, rot repair
Part of full-frame
A sloped sill pan and flashing tape keep water out of the wall. Rot repair is priced when the old window comes out.
What moves it: Opening condition and siding.
On the quote: Look for a sill pan in the scope.
6 Disposal & permit
$180–$620 / job
Hauling away old windows and the permit some towns require for window work.
What moves it: Number of windows and your town.
On the quote: Check whether a permit is needed in your town.
7 Frame material
Vinyl lowest, wood highest
Vinyl frames cost the least and need no painting. Fiberglass is stronger and stable in heat. Clad wood and wood look best inside but cost more, and aluminum suits mild climates.
What moves it: Material, color and interior finish.
On the quote: Ask for the frame warranty and whether colors are painted or built in.
8 Upper-floor windows
More labor per window
Upper-floor windows need ladders, staging or a lift, and full-frame work on a second story takes longer. Many inserts can be installed from inside, which helps.
What moves it: Stories and whether windows can be set from inside.
On the quote: Ask whether upper windows are installed from inside or outside.
9 Glass package
Triple pane costs more
Double-pane glass with low-E coating and argon is standard. Triple-pane glass insulates better and reduces outside noise, but adds weight and cost.
What moves it: Climate, noise and budget.
On the quote: Ask for the U-factor and solar heat gain rating of the glass.
A closer look at your project
See the difference between a window and its opening
A window quote needs to describe the product and the installation around it. These details explain why two quotes for the same opening count can differ.
Three parts of the same picture, each tied to a line on a window estimate. These close-ups are crops of the same AI-generated illustration.
Choose insert or full-frame
An insert uses the retained frame; full-frame work involves the opening and surrounding finishes. Ask the installer to assess the existing frame rather than choosing only by price.
Match the specification
Compare frame material, glazing, window style and access. Ask which trim, flashing and finishing work is included, then compare the complete installed price.
Before comparing totals, ask for these details
- Window unit
- Manufacturer, series, size, frame and glazing
- Opening and access
- Insert or full-frame method; floor level and frame condition
- Finishing
- Interior/exterior trim, disposal and permit responsibility
On this page
- 10-window example
- Insert versus full-frame
- Frame material
- Double or triple pane
- Rebates before tax credits
- What insurance covers
- Window replacement cost by region
- What “Typical window style” does to the price
- What “Frame material” does to the price
- How age changes the window replacement claim payout
- Quote checklist: 7 items to verify
- How long the job takes
- Ways to keep the cost down
- Questions
Replacement window estimates for 1, 5, 10 and 20 windows
These examples are calculated from this page's model, not surveyed contractor quotes. They assume vinyl double-hung windows, double glazing, one-story access and the national regional factor (1.00).
| Openings | Insert installation | Full-frame installation |
|---|---|---|
| 1 window | $975 – $2,060 | $1,325 – $2,730 |
| 5 windows | $4,155 – $7,820 | $5,905 – $11,170 |
| 10 windows | $8,130 – $15,020 | $11,630 – $21,720 |
| 20 windows | $16,080 – $29,420 | $23,080 – $42,820 |
How to check the 10-window insert example: windows $4,950–$8,000 + labor $3,000–$6,400 + disposal/permit allowance $180–$620 = $8,130–$15,020. The calculator initially uses two-story access, which raises its default estimate to $8,370–$15,532. Load a one-story example above to reproduce this table.
For a written comparison, match opening count, manufacturer and series, U-factor, solar heat gain rating, insert or full-frame work, flashing, trim, removal and permit responsibility.
Window glass replacement or a complete new window?
This calculator prices a complete window unit. A damaged pane or failed insulated glass unit may be a different repair if the frame and sash remain serviceable. Do not use a whole-window estimate as a glass-only quote.
Ask a glazier to identify the glass unit, dimensions, safety-glazing requirements and whether the sash can be reused. For frame rot, a changed opening or widespread water damage, ask for a full-frame assessment instead.
Insert versus full-frame
This single choice can change a quote by 40%, and it is often not spelled out.
An insert replacement fits a new window inside the existing frame. The trim, siding and interior finishes stay untouched, so it is quicker, cheaper and far less disruptive. It only works when the existing frame is square, level and sound — and it costs you a little glass area, because the new frame sits inside the old one.
A full-frame replacement strips everything back to the rough opening. It is the only correct option when the frame is rotten or out of square, and it is the only way to change the window size. It costs more and involves re-finishing inside and out.
| Window style | Unit price, typical |
|---|---|
| Single-hung | $400 – $650 |
| Double-hung | $495 – $800 |
| Picture / fixed | $420 – $700 |
| Garden | $493 – $900 |
| Casement | $560 – $950 |
| Bay or bow | $790 – $1,900 |
Frame material
Vinyl is the default for good reason: cheapest, low maintenance, and genuinely energy efficient. It cannot be painted and very dark colors can warp in strong sun.
Fiberglass costs roughly 40 to 60% more and expands and contracts at nearly the same rate as glass, which means seals last longer. It is the sensible upgrade if you plan to stay.
Wood looks best and demands the most — repainting or resealing every few years, and rot risk if it is neglected. Clad wood puts an aluminum or vinyl skin on the outside and wood on the inside, which solves most of that at a price.
Double or triple pane
Double pane with a low-E coating and argon fill is the sensible default across most of the country. Triple pane adds roughly 15 to 25% to the window cost and earns that back mainly in genuinely cold climates or where street noise is a problem. In a mild climate the payback period usually runs past the point where it stops being interesting.
Rebates before tax credits
Federal energy efficiency credits have changed repeatedly and it is worth checking current IRS guidance rather than relying on a figure quoted in a sales pitch. State and utility rebates are separate, are often overlooked, and are frequently the larger of the two. The DSIRE database lists them by state.
What insurance covers
Broken glass from a covered peril — storm debris, a fallen branch, vandalism — is generally covered, subject to your deductible. Failed seals, fogging between the panes, rot and ordinary age are not. Since a single window replacement often costs less than the deductible, most window claims are not worth filing unless several are damaged at once.
The ACV and RCV difference applies here as it does everywhere else.
Window result summaryThe whole-house result depends on opening count and size, frame, glazing and whether the job is insert or full-frame. Compare flashing, trim, tempered-glass requirements, disposal, U-factor, SHGC and labor warranty before comparing totals.
Worked example: ten windows, and what climate changes
The table higher on this page already prices this case. Here is the arithmetic, so a quote can be checked line by line. It assumes vinyl double-hung windows, double glazing, one-story access and the national regional factor (1.00).
10 vinyl double-hung inserts · one story · national
Worked example| 10 window units | $4,950 – $8,000 |
| Labor | $3,000 – $6,400 |
| Disposal and permit allowance | $180 – $620 |
| Insert installation, 10 openings | $8,130 – $15,020 |
Full-frame on the same ten openings is $11,630 – $21,720, because trim and finishing are added. Climate does not replace those dollars: in a heating climate, compare U-factor before paying for triple pane; in a cooling climate, solar heat gain matters more than a thicker price. The calculator’s default is two-story access, which moves this same insert job to about $8,370 – $15,532. Load one story to reproduce the total above.
Window replacement cost by region
The calculator's default window replacement job, repriced for each of its six regions. At the national average it runs $8,370 – $15,532; South / Lower Midwest is the lowest at $7,282 – $13,513, and West Coast metro is the highest at $10,881 – $20,192, a gap of about $5,139 at the midpoint.
| Region | Planning range | Midpoint |
|---|---|---|
| National average | $8,370 – $15,532 | $11,951 |
| South / Lower Midwest | $7,282 – $13,513 | $10,398 |
| Mountain / Plains | $7,952 – $14,755 | $11,354 |
| Mid-Atlantic / Upper Midwest | $9,374 – $17,396 | $13,385 |
| Northeast metro | $10,546 – $19,570 | $15,058 |
| West Coast metro | $10,881 – $20,192 | $15,536 |
What “Typical window style” does to the price
Every other input stays at its default and only “Typical window style” changes. The cheapest choice, Single-hung, comes to $7,420 – $14,032; the most expensive, Bay or bow, comes to $11,320 – $26,532.
| Choice | Planning range | Midpoint vs default |
|---|---|---|
| Single-hung | $7,420 – $14,032 | −$1,225 |
| Double-hung (default) | $8,370 – $15,532 | — |
| Picture / fixed | $7,620 – $14,532 | −$875 |
| Casement | $9,020 – $17,032 | +$1,075 |
| Bay or bow | $11,320 – $26,532 | +$6,975 |
What “Frame material” does to the price
Every other input stays at its default and only “Frame material” changes. The cheapest choice, Vinyl, comes to $8,370 – $15,532; the most expensive, Wood, comes to $12,578 – $22,332.
| Choice | Planning range | Midpoint vs default |
|---|---|---|
| Vinyl (default) | $8,370 – $15,532 | — |
| Fiberglass | $10,845 – $19,532 | +$3,238 |
| Clad wood | $12,083 – $21,532 | +$4,856 |
| Wood | $12,578 – $22,332 | +$5,504 |
| Aluminum | $9,113 – $16,732 | +$972 |
How age changes the window replacement claim payout
Using the default job, a $1,000 deductible and a 25-year expected life. At 10 years old, about $4,780 is held back as depreciation; a replacement cost policy releases it after the work is finished, while an actual cash value policy keeps it.
| Age | Wear | First check | Held back |
|---|---|---|---|
| 2 years | 8% | $9,995 | $956 |
| 5 years | 20% | $8,561 | $2,390 |
| 10 years | 40% | $6,171 | $4,780 |
| 15 years | 60% | $3,780 | $7,171 |
| 20 years | 80% | $1,390 | $9,561 |
| 30 years | 80% | $1,390 | $9,561 |
Quote checklist: 7 items to verify
Window quotes are easiest to compare by unit with the same frame and glass.
- Window count and sizes. Each opening measured.
- Frame and style. Material, style and color.
- Glass ratings. U-factor, solar heat gain and any impact rating.
- Install method. Insert or full-frame.
- Flashing and sill pans. For full-frame installs.
- Trim and capping. Interior and exterior trim.
- Disposal and permit. Haul-away and any permit.
How long the job takes
| Stage | Typical time | What happens |
|---|---|---|
| Measuring | 1 – 2 hours | Each opening checked. |
| Manufacturing | 3 – 10 weeks | Custom sizes are made to order. |
| Installation | 1 – 3 days | About 8 to 12 inserts a day. |
| Trim and touch-up | 1 day | Interior trim and caulk. |
| Inspection | If required | Some towns inspect window work. |
Clear furniture and blinds away from each window the night before installation day.
Ways to keep the cost down
Window costs depend on count, material and method.
- Use inserts where frames are sound. Less labor.
- Choose vinyl. Lower cost.
- Keep standard styles. Double-hung.
- Do the whole house. Volume pricing.
- Check rebates. Energy programs.
- Schedule off-season. Better prices.
Questions
How much does it cost to replace windows in a house?
In this calculator, ten vinyl double-hung, double-glazed inserts at one-story access and the national factor total $8,130–$15,020, including the disposal and permit allowance. Full-frame replacement totals $11,630–$21,720 under the same assumptions. These are model estimates, not local quotes.
What is the difference between insert and full-frame replacement?
An insert fits inside the existing frame, keeping trim and siding intact — cheaper and quicker, but only viable if the frame is sound. Full-frame strips back to the rough opening and is required when the frame is rotten, out of square, or the opening size is changing.
Are triple pane windows worth it?
In genuinely cold climates or noisy locations, often yes. Elsewhere the 15 to 25% premium takes a long time to pay back. Double pane with a low-E coating and argon fill is the sensible default for most of the country.
How long do replacement windows last?
Vinyl commonly reaches 20 to 30 years, fiberglass 30 to 40, and well-maintained wood 30 or more. The seal usually fails before the frame does — fogging between panes is the sign.
Does homeowners insurance cover window replacement?
Broken glass from a covered peril is generally covered. Failed seals, fogging and age are not. Because one window often costs less than the deductible, most single-window claims are not worth filing.
Do new windows qualify for a tax credit?
Federal energy efficiency credits have changed repeatedly, so check current IRS guidance rather than a figure from a sales pitch. State and utility rebates are separate and are frequently larger — the DSIRE database lists them by state.
Is uPVC double glazing the same as vinyl windows?
Yes, broadly. uPVC (unplasticized PVC) is the UK and European name for the rigid vinyl used in US vinyl window frames, and double glazed means double pane. In this calculator choose vinyl frames and double pane glass. The prices are for US installations in US dollars, so they will not match a UK quote, which includes VAT and different labor rates.
What is a U-factor?
U-factor measures how much heat passes through the whole window. Lower numbers insulate better, and colder climates benefit most from low U-factors.
What is solar heat gain coefficient?
It measures how much of the sun's heat comes through the glass. Lower values suit hot, sunny climates; higher values can help in cold climates on south-facing walls.
Do new windows reduce outside noise?
Yes, especially units with laminated glass or triple panes and well-sealed frames.
Related
- Siding replacement — usually quoted at the same time as windows
- HVAC replacement — Section 25C expired for both
- Claim gap calculator — when one window is not worth claiming
- What insurance actually pays
Where these figures come from
Rates are cross-checked against 2026 published pricing from Homewyse, This Old House, Angi and Modernize. Homewyse puts basic replacement installation at $632 to $967 per window as of May 2026; This Old House reports unit prices from $397 for single-hung up to $886 for bay and bow. Depreciation is modeled straight-line against expected service life; carriers use
their own schedules and some cap payouts by age. These are ranges for planning, not quotes,
and nothing here is a coverage determination.
Evidence trail
Reviewed 4 Aug 2026Sources used to check this model
Primary public references anchor window technology, performance ratings and price movement. Calculator rates remain planning assumptions tested against published market ranges.
Product factorsDOE: Window types and technologies
Rating standardNFRC energy performance ratings
Price movementBLS Producer Price Index
These organizations do not endorse ReplaceCost. Local contractor quotes, permits and product specifications control the real result. See the full methodology for the source hierarchy and update process.
Window planning
Window replacement questions, simplified
Use the estimator for the price range, then check the scope factors that can change the quote.
Per-window vs whole-house cost
Compare quantity, size, frame type and installation scope before multiplying a single average across the house.
Egress window calculatorBasement escape windows, wells and drains.Front door calculatorPrice a new entry door with the windows.
Glass or full-window replacement
A pane or insulated-glass repair is a different scope from replacing the complete window unit.
Vinyl and uPVC options
Frame material, glazing package and size can materially change the installed price.
Installation labor
Access, trim, flashing and opening repairs can change labor even when the window itself is similar.
Energy-upgrade decisions
Compare performance specifications and incentives separately from the basic replacement estimate.
Get a project estimate
Use the calculator above to build a consistent scope before requesting quotes.
Related searches
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