Windows are the most expensive “invisible” project in homeownership — you don’t think about them until the drafts, the fog, or the $400 quote per window. The question how much does it cost to replace old windows has one of the widest ranges in remodeling because “window replacement” spans a $200 insert to a $2,000 custom job. I’ve replaced windows in two homes (14 windows total). Here’s the real cost landscape for 2026.
The headline: $300-1,000 per window installed for standard replacements, with most homeowners paying $500-700 per window. A whole house (10-15 windows) typically runs $7,000-15,000. But the details swing this enormously.
How Much Does It Cost to Replace Old Windows? By Type
- Insert/pocket replacement (new window in the existing frame): $300-700 installed. Cheapest, fastest (30-60 min per window), no exterior disruption. Works when the existing frame is solid and square. This is right for most replacements.
- Full-frame replacement (down to the studs): $500-1,200 installed. Needed when frames are rotted, out of square, or you want to change size/style. More labor, more disruption, better long-term result.
- New construction (nail-fin, for additions/major remodels): $400-1,000+ for the window + extensive labor. Not a retrofit option.
By Window Material
- Vinyl: $300-700 installed. The value choice — 80% of replacements. Good energy performance, zero maintenance, 20-30 year life. Quality varies enormously by manufacturer; cheap vinyl warps and yellows.
- Fiberglass: $600-1,200 installed. Stronger than vinyl (narrower frames = more glass), paints well, minimal expansion/contraction. The “buy it for life” mid-range choice.
- Wood: $800-1,500+ installed. Beautiful, traditional, excellent insulator — but needs painting/staining and rots if neglected. For historic homes or purists.
- Wood-clad (wood interior, aluminum/vinyl exterior): $700-1,300. The best of both — pretty inside, maintenance-free outside. My pick for quality renovations.
- Aluminum: $400-900. Strong and slim (great for modern designs) but thermally poor unless thermally broken. Better for mild climates.
By Style (Cost Adders)
Standard double-hung is the baseline. Add for: casement (+15-25%), bay/bow (+$2,000-5,000 per unit — structural work), picture windows (large sizes get expensive fast), custom shapes (arches, circles: 2-3x standard), divided lites/grids (+10-20%, simulated vs. true divided).
What Really Drives the Price
- Number of windows: the per-window price drops with quantity — mobilization is fixed. 15 windows might be $550 each where 3 windows are $750 each. Get the whole house quoted.
- Second-story/access: ladder/scaffold work adds 15-25%.
- Lead paint (pre-1978 homes): EPA RRP rules require certified contractors + containment — adds $100-200/window. Non-negotiable legally.
- Rot repair: discovered during full-frame replacement. Budget 10-15% contingency.
- Energy options: double-pane low-E is standard now; triple-pane adds $100-200/window (worth it in cold climates — see below).
The Energy Question: Will New Windows Pay for Themselves?
Honest answer: rarely on energy savings alone. Replacing single-pane with double-pane low-E saves 10-25% on heating/cooling — maybe $200-400/year. On a $10,000 project, that’s a 25-40 year payback. The DOE is candid about this.
Replace windows for: comfort (no more drafts — the real benefit), function (windows that open/close/lock), noise reduction (dramatic with laminated glass), UV protection (low-E saves your floors/furniture), curb appeal and resale (recoups 65-75%). Don’t replace solely for energy payback — attic insulation and air sealing pay back 5-10x faster.
Exception: if your windows are truly failed (fogged double-panes, rotting frames, won’t stay open), replacement is maintenance, not an investment — just do it.
When Repair Beats Replacement
- Fogged glass only: glass replacement ($100-300/window) vs. full window. The frame is fine; just the sealed unit failed.
- Drafty but solid wood windows: weatherstripping + storm windows ($100-200/window) achieves 80% of replacement performance at 20% of cost. Historic preservationists are right about this.
- Broken hardware/balances: $50-150 in parts. A window that won’t stay open usually needs $20 sash balances, not a $600 replacement.
- Rotted sill only: sill replacement ($200-400) vs. full window.
Hiring: Avoiding the Window Sales Gauntlet
Window sales is notoriously high-pressure (the “this price expires today” crowd). Protect yourself:
- Get 3-5 quotes including one from a big-box installation service (price anchor) and local established companies.
- Reject same-day pressure. Any legitimate quote is valid for 30 days. Walk away from “sign now” tactics.
- Compare the actual window spec: U-factor (lower = better insulation; look for ≤0.30), SHGC (solar heat gain; lower for hot climates), air infiltration rating, and warranty (lifetime glass/seal, 20+ years frame is standard on quality).
- Check installer credentials separately from the product — the best window installed badly performs badly. Manufacturer-certified installers matter.
- Read the warranty fine print: “lifetime” often means the product’s expected lifetime or the original owner’s tenure. Transferability matters for resale.
The FTC’s home improvement guidance covers the high-pressure sales red flags generally. And if winter drafts are your motivation, my cold room diagnosis might reveal cheaper fixes first.
The Storm Window Alternative
Before committing to full replacement, price interior storm windows. Companies like Indow make custom press-fit acrylic inserts ($300-500 per window) that install in minutes with no construction. They cut drafts dramatically, reduce noise significantly, and preserve original wood windows (important for historic homes). For a house with solid but drafty windows, storms achieve 80% of replacement performance at 40% of the cost — with zero disruption. I did this in a 1920s home and the comfort difference was remarkable. Full replacement is better, but storms are the smart interim move — or the permanent answer if your frames are sound.
The Bottom Line
How much does it cost to replace old windows? $300-1,000 per window installed ($500-700 typical), $7,000-15,000 for a whole house. Vinyl inserts are the value choice; fiberglass or wood-clad for the long term. Don’t expect energy payback alone to justify it — do it for comfort, function, and noise. Repair when the issue is glass, hardware, or weatherstripping; replace when frames are shot. And never, ever sign with a same-day-pressure salesperson.
Installation Day: What to Watch For
The crew’s workmanship matters as much as the window brand. Before they start, confirm which windows are being replaced (mark them with painter’s tape — miscommunication here is expensive), move furniture away from windows, and take down curtains and blinds yourself. During installation, a good crew protects floors with drop cloths, removes one window at a time (never leave the house open), insulates the gaps with low-expansion foam (not stuffed fiberglass — foam seals air, fiberglass doesn’t), and caulks exterior trim properly.
Before they leave, inspect every window: open and close it (should move smoothly, lock easily), check the caulking lines (continuous, no gaps), and look at the interior trim (clean joints, filled nail holes). Test for drafts with a candle or incense stick on a windy day within the first week — call back immediately if you feel air movement; reputable companies warranty their installation labor for at least a year. Keep all warranty paperwork (manufacturer + installer, they’re separate) in one folder. The windows will outlast your memory of the installation — the paperwork shouldn’t have to.
