Window replacement costs $450 to $1,500 per window on average for a standard insert replacement, according to HomeGuide cost data. Replacing all windows in a typical home with eight to fifteen windows costs $4,500 to $22,500 in total. Full-frame replacements, which involve removing the entire existing window assembly and reframing, run $800 to $2,500 per window. Material choice, window type, glass package, and regional labor rates all drive the final number.
Average Window Replacement Cost Per Window
For a standard double-hung insert replacement with a vinyl frame and double-pane low-E glass, HomeGuide cost data places the average at $450 to $900 per window installed. Mid-grade fiberglass and clad-wood windows in the same configuration run $700 to $1,500 per window. Custom-sized or specialty windows, premium brands, and full-frame installations push the upper end to $2,000 or more per window.
The labor component is relatively fixed per window regardless of window cost: installer time for a standard insert runs about $150 to $250 per window according to contractor pricing surveys. The material cost is where most of the price variation lives.
Get Quotes on Full Scope, Not Per-Window Only
Window replacement contractors often quote a per-window rate that excludes interior trim repair, caulking, and exterior finishing work. Ask each contractor to include full-scope pricing: interior and exterior trim matching or patching, caulking and sealing, haul-away of old units, and site cleanup. A complete installed quote prevents surprises when the crew needs to repaint a sill or replace rotted exterior trim that was hidden behind the old window frame.
Total Cost to Replace All Windows in a House
Total cost for a full-house window replacement depends on window count, window sizes, and the material tier you select. According to Angi cost data, most homeowners replacing all windows in a typical 1,500 to 2,500 square foot single-family home spend $7,000 to $15,000.
| Home Size | Typical Window Count | Estimated Total Cost |
|---|---|---|
| Apartment or small condo | 4 - 7 windows | $2,000 - $8,000 (est.) |
| Small house (under 1,200 sq ft) | 6 - 10 windows | $3,500 - $12,000 (est.) |
| Medium house (1,200 - 2,500 sq ft) | 8 - 15 windows | $5,000 - $18,000 (est.) |
| Large house (2,500 - 4,000 sq ft) | 15 - 25 windows | $9,000 - $30,000 (est.) |
| Large house with specialty windows | 15 - 30+ windows | $15,000 - $50,000+ (est.) |
Estimates from HomeGuide and Angi cost data for insert replacements using mid-grade vinyl or fiberglass. Full-frame replacements, wood, or custom windows increase costs significantly.
These ranges assume standard rectangular windows at typical residential sizes. Bay windows, bow windows, skylights, and picture windows sized over 48 by 60 inches are priced as specialty units and cost significantly more.
Window Replacement Cost by Material: Vinyl, Aluminum, Wood, Fiberglass
Frame material is the single largest driver of per-unit cost variation in window replacement. Each material has a different cost, maintenance requirement, and expected service life.
| Frame Material | Average Per-Window Cost (Installed) | Expected Lifespan | Maintenance Level |
|---|---|---|---|
| Vinyl | $450 - $900 (est.) | 20 - 40 years | Low |
| Aluminum | $500 - $1,000 (est.) | 20 - 30 years | Low |
| Wood | $800 - $2,000 (est.) | 30 - 50+ years (with care) | High |
| Clad-wood (wood interior, aluminum or fiberglass exterior) | $900 - $2,200 (est.) | 30 - 50 years | Medium |
| Fiberglass | $700 - $1,500 (est.) | 30 - 50+ years | Low |
Per-window installed costs from HomeGuide cost data and manufacturer pricing surveys. Costs include double-pane low-E glass as standard.
Vinyl dominates the US replacement window market because it combines low cost, low maintenance, good thermal performance, and a 20-to-40-year service life. Fiberglass offers better thermal performance and longer life at a modest price premium. Wood delivers the best interior aesthetics but requires regular maintenance to prevent rot and seal failure. Aluminum performs poorly thermally in cold climates but is dimensionally stable for large commercial-style openings.
Cost by Window Type: Double-Hung, Casement, Bay, Picture
Window operating style also affects cost. Double-hung windows - the most common US residential window, where both the upper and lower sashes slide vertically - are the baseline against which other styles are priced.
| Window Type | Cost vs Standard Double-Hung |
|---|---|
| Double-hung | Baseline |
| Single-hung | 10 - 20% less than double-hung |
| Casement (crank-out) | 10 - 30% more |
| Awning | Similar to casement |
| Sliding | 10 - 20% less |
| Fixed / picture | 15 - 25% less (no operating hardware) |
| Bay window (3-unit) | $1,500 - $5,000 per unit (est.) |
| Garden / greenhouse window | $1,000 - $3,000 per unit (est.) |
Percentage comparisons from contractor pricing surveys. Bay and specialty window costs from HomeGuide cost data.
Bay and bow windows cost significantly more because they are multi-unit assemblies requiring custom-fit framing, a seat board or bench build, roof flashing above the unit, and often drywall repair of the projection interior.
Labor Cost to Install Replacement Windows
Labor cost for standard insert replacement windows runs $150 to $250 per window, per contractor pricing surveys. Full-frame replacements with new framing and exterior trim finishing run $300 to $600 per window in most US markets.
A window installation crew of two can typically complete six to ten insert replacements in one day. Full-frame replacements are more complex and yield four to six windows per crew-day. For large projects of fifteen or more windows, some installers offer a per-day crew rate that works out lower per window than their per-unit rate.
Energy Efficiency Upgrades: Low-E Glass and Double-Pane Cost
Most replacement windows sold today include double-pane glass as standard. Single-pane windows in older homes are a significant source of heat loss and should be replaced with double-pane or triple-pane as a baseline, not an upgrade.
Key glass options and their cost implications:
Double-pane with argon fill: Standard in most mid-grade replacements. The argon gas between panes improves thermal resistance modestly over air fill. Most mid-grade vinyl windows include this as standard at no upcharge.
Low-E coating: Low-emissivity glass coating blocks infrared heat while transmitting visible light. According to US Department of Energy guidance, low-E coatings improve window thermal performance by 25 to 50 percent over clear glass. Most mid-grade windows now include low-E as standard. Confirm it is included in your quote, not listed as an option.
Triple-pane glass: Standard in Northern European markets, growing in US northern climates. Triple-pane adds $100 to $300 per window over comparable double-pane, per contractor pricing surveys. Payback period at current energy prices is typically longer than for double-pane upgrades from single-pane; worthwhile primarily in climates with very cold winters.
How to Get Accurate Window Replacement Quotes
Get written, itemized quotes from at least three window installers before signing. The quotes should specify the window brand, product line and series, frame material, glass package (pane count, gas fill, low-E coating), and whether the quote includes full-frame or insert installation.
Window contractors should be licensed where state law requires it for home improvement work. Verify that they carry general liability insurance and workers compensation coverage before any work begins. See How to Vet a Contractor's License and Insurance for the full verification process.
The decision between repairing existing windows versus replacing them is not always clear-cut. Before committing to a full replacement project, review Window Repair vs Replacement: How to Decide to understand which conditions warrant repair and which make replacement the more cost-effective path.
Questions to Ask Before Signing a Window Contract
Before signing any window replacement contract, confirm answers to these questions in writing:
- Is this an insert or full-frame replacement? What does each include?
- What happens if the existing frame or sill is rotted - is that repair included or extra?
- What are the window brand, series, and specific glass package?
- What is the manufacturer's warranty on the window unit? What is your workmanship warranty?
- Who pulls the permit, and is the permit cost included in your quote?
- What does cleanup and haul-away of old windows include?
Verify the Glass Package Before Signing
Window product lines from the same brand can range from builder-grade to premium within the same material category. Two vinyl window quotes at similar prices may specify different glass packages - one with standard clear double-pane and one with low-E and argon fill. The installed cost difference is small, but the thermal performance and durability difference is significant over a 20-year life. Always confirm the specific glass specifications in writing before signing.
For guidance on what to look for in the contract itself, see How to Get Accurate Contractor Quotes.
Frequently asked questions
Can I replace windows myself or do I need a contractor?
Insert replacement windows - where the new sash slides into an existing frame in good condition - are considered a DIY-capable project for handy homeowners. Full-frame replacements that involve removing and reframing the opening, however, require carpentry skill, proper flashing to prevent water infiltration, and in many jurisdictions a building permit. Mistakes in full-frame installs lead to water damage and structural issues that cost far more to repair than professional installation.
Does window replacement require a permit?
Full-frame window replacements, which involve altering the rough opening or structural header, typically require a building permit in most US jurisdictions. Insert replacements, where only the sash and glass unit are replaced within the existing frame, usually do not. Permit requirements vary by municipality - contact your local building department before work begins to confirm what your specific project requires.
How long does window replacement take per window?
A professional installer can typically complete one insert window replacement in 30 to 60 minutes per window. Full-frame replacements with new framing, exterior trim, and interior finishing take one to two hours per window or more. A typical eight-window job can be completed in one to two days by an experienced crew.
What is the difference between a full-frame and insert replacement?
An insert replacement slides a new window unit into the existing frame, leaving the existing exterior and interior trim intact. It is faster and less disruptive. A full-frame replacement removes the entire window assembly down to the rough framing, allowing for a larger glass area, complete waterproofing membrane replacement, and repair of any rot or damage found in the existing frame or header. Full-frame replacements cost more and require more time.
Which window material lasts the longest?
Fiberglass windows consistently achieve the longest service life in independent testing, with manufacturer-rated lifespans of 30 to 50 years. Wood windows, with proper maintenance and periodic repainting or restaining, can last equally long but require more upkeep. Vinyl windows have a rated lifespan of 20 to 40 years and require minimal maintenance. Aluminum windows last 20 to 30 years but have poor thermal performance compared to vinyl or fiberglass.
Will new windows lower my heating and cooling bills?
Replacing single-pane windows with ENERGY STAR certified double-pane units can reduce heating and cooling energy consumption by 12 to 24 percent, per US Department of Energy estimates. The savings depend heavily on the existing window condition, climate zone, and the home's other insulation levels. The payback period for window replacement based on energy savings alone is typically 10 to 20 years at current energy prices.