The $600 Window Credit Is Gone and Prices Are Up 5–10%. Glass-Only vs. Full Replacement, Recalculated.

# The $600 Window Credit Is Gone and Prices Are Up 5–10%. Glass-Only vs. Full Replacement, Recalculated.

Cost Analysis · Fall 2026

By Apex Windows & Glass · October 1, 2026 · Dallas–Fort Worth

Every cost guide still ranking on Google was calculated for a market that ended December 31, 2025. We redid the repair-versus-replace breakeven with current quote data, and the answer now hinges on one thing you can check around your own window frames in ten minutes.

> Note: Costs, coverage, rebate availability, and tax-credit eligibility depend on project scope, product qualifications, household circumstances, insurer terms, and current program rules. Confirm current requirements and obtain project-specific quotes before making a decision.

The fog shows up first in the corner of the glass, then spreads until the view looks like it is behind a shower door. For most double-pane windows in DFW homes built in the 1990s and 2000s, that fog can indicate that the insulated glass unit's seal may have failed. A qualified assessment can confirm the cause and the condition of the surrounding frame and sash. That leaves a repair decision, and this fall the numbers behind it are stale.

If you search what a replacement window costs, the guides on the first page of results were largely written or last updated before two things happened at once. The federal 25C energy credit, which returned 30% of the cost of qualifying windows up to a $600 cap, expired for improvements placed in service after December 31, 2025. Replacement prices were reported as roughly 5–10% higher over the same period, a jump window companies began flagging in November 2025 that federal producer-price data has since confirmed at the material level.

For the article's illustrative five-window scenario, those changes add roughly $1,000 to $2,600 to the out-of-pocket picture a homeowner might expect from 2025-era guides. It also changed the arithmetic on glass-only repair: replacing only the failed glass unit and keeping the frame.

What moved since the guides were written

Three cost forces landed on full window replacement between the time most cost guides were updated and now. The largest operates through the frame itself.

Figure 1. Why quotes jumped this year. The article attributes the following chain to USGlass Magazine and Energy Swing Windows. The tariff exposure sits in the metal frame and sash, which is why a glass-only repair, where the frame stays on the wall, is presented as largely insulated from it.

Sources: [USGlass Magazine, September 14, 2026](https://www.usglassmag.com/aluminum-prices-surge-27-as-tariffs-pressure-construction-costs/) (BLS PPI and AGC data); [Energy Swing Windows](https://energyswingwindows.com/blog/right-time-to-replace-windows).

Glass products rose 4.5% year over year while metal windows rose 12.2%, and aluminum mill shapes, the raw input for most modern frames, rose 27.3%. Inflation is not hitting all repair options equally. A full replacement buys a new frame, new sash, new hardware, and new glass. A glass-only replacement buys glass. The 2026 price shock concentrates almost entirely in the part of the job you skip when you keep the frame.

Then there is the credit. The 25C credit capped the window benefit at $600 total for exterior windows and skylights. It is often misremembered as $600 per window. It was never a large offset on a five-figure whole-house job. But on a smaller, targeted job it was real money, and it is now gone for anything installed after December 31,

1. Figure 2. What a homeowner budgeting from 2025 guides faces now. The original visual is represented below as an accessible waterfall table. It assumes five failed windows at a mid-grade $1,500 per window. Price inputs are attributed to r/HomeImprovement quote threads and ProFindr 2026 cost data.

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The same job in fall 2026 runs roughly $7,460 to $8,660 depending on where the contractor lands in the 5–10% increase band.

That is a roughly 15–20% swing in real out-of-pocket cost on the same job, in one buying season. Yet almost none of the cost content ranking in search reflects it, which is why the number in your head from last year's research is probably wrong in both directions, with prices higher and the credit lower.

What a window costs in fall 2026

There is no official consumer price index for installed windows, so the most honest picture of the full-replacement market comes from what homeowners report paying and being quoted. We pulled the 2026 threads from r/HomeImprovement where people post their actual numbers.

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\*Atlanta quote priced the sliding door at $5,000. Figures rounded.

Sources: [thread 1 (April 2026)](https://www.reddit.com/r/HomeImprovement/comments/1sph6ii/whats_the_going_rate_on_windows/) and [thread 2 (July 2026)](https://www.reddit.com/r/HomeImprovement/comments/1v406vy/total_window_replacement/), both r/HomeImprovement.

Figure 3. The article describes the working band for professionally installed mid-grade windows in 2026 as roughly $1,000 to $3,000 per window installed. Budget local shops occasionally land near $700; premium sales-model brands run $3,000 to $4,000 and up.

Against that, here is the full menu of fixes for a foggy or failed window, per unit, in the same market:

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Figure 4. The 2026 per-unit cost ladder. The original bars show typical averages; the ranges above are the observed ranges. Glass-only figures: [ProFindr 2026 foggy-window cost guide](https://profindr.com/guides/cost-guide/foggy-window-glass-replacement). Full-replacement figures: Reddit quote data in Figure 3. The article notes the gap between the guide-world insert price (~$1,000) and what replacement companies quote once installation, trim, disposal, warranty, and overhead are bundled in.

Fixing the glass costs a third to a sixth of fixing the whole window, and the two options respond differently to the 2026 price shock: the glass side tracks glass inflation, while the full-replacement side absorbs the aluminum spike, the diesel-driven delivery costs, and the labor of removing and reframing the opening.

The recalculated breakeven

Take the most common real scenario: a home with roughly 15 windows where seal failure has clustered in five of them, which is how it usually works. IGUs fail in cohorts because windows installed together age together, while the frames on the rest of the house stay fine.

Figure 5. The per-window spread in fall 2026. Both options below use modern glass.

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Before accepting that spread, it is worth asking exactly what the extra money buys.

Figure 6. The comparison that decides the question. The article concludes that, with sound frames, the extra money buys frame lifespan rather than efficiency; when the frames are failing, glass-only throws money away because the new unit will fail with them.

When the existing frame and sash are suitable, glass-only insulated-unit replacement may be a cost-effective option. A qualified assessment should compare the condition of the full opening, the selected product terms, and the written scopes before any decision.

> The lost credit also landed unevenly. Because the 25C capped windows at $600 total, a small glass-only job lost proportionally more than a big whole-house job. On a $2,250 five-unit repair, that credit would have covered about 27% of the bill; on a $22,500 whole-house replacement, about 3%. The article's analysis is that the credit's end affected every path, but hit the lower-cost path harder in percentage terms.

The decision, run scenario by scenario

Figure 7. The 2026 decision tree. Every branch keys off the frame's condition; price only tells you what the wrong fix costs.

The ten-minute frame check

Walk the house and run this list on every foggy window:

• Press a flathead screwdriver gently into the sill and lower frame corners on wood windows: soft or crumbly means rot.
• Look for white oxidation or pitting on aluminum.
• Open and close each sash halfway and let go; it should hold position rather than slide.
• Check the interior caulking line and the exterior trim for gaps or water staining.
• Note whether the fog appears in a cluster of same-age windows (seal failure by age) or randomly across the house (look for a frame or foundation cause).

Frames that pass are candidates for glass-only.

The two DFW-specific wrinkles

Hail and the deductible. North Texas is among the country's most hail-exposed markets, and a bad storm can shatter glass across an entire elevation of a house. Impact-shattered glass may be covered depending on the policy and cause of loss; age-related seal failure is commonly excluded. But most DFW policies now carry percentage deductibles, often 1–2% of dwelling coverage, which puts the deductible at $4,000 to $8,000 on a typical home. Below that line, a hail claim on a few windows is uneconomical, and glass-only replacement is the out-of-pocket route anyway. Get the deductible figure from your policy declarations page before you call the insurer.

The incentives that remain. With 25C gone, do not wait for the federal money to come back, and be skeptical of any ad implying it exists. What is available in DFW right now:

Figure 8. The post-25C incentive picture for DFW windows. The article states that the large state rebates are real money but were still not accepting applications and would not reimburse projects completed before launch.

What five foggy windows cost in fall 2026

The numbers a year of Googling gave you were built for a market with a $600 credit and prices 5–10% lower. Updated for the market that exists this October: this article estimates a five-window glass-only repair with Low-E argon units at roughly $2,250 to $2,400, against $7,500 to $8,700 for mid-grade full replacement of the same openings and $15,000-plus for premium quotes. In a suitable existing frame, the glass-only option may deliver similar glass performance at a lower upfront cost; whole-window performance also depends on the frame, air sealing, installation, and product ratings.

When frames fail the check, consider full replacement after a qualified inspection and written comparison of the available scopes.

Apex Windows & Glass replaces failed insulated glass units in existing frames across DFW, including McKinney, Frisco, Plano, Allen, Prosper, and Celina, and handles full replacement when frames warrant it. If you would like a glass-only number for comparison, request a quote and we will measure the units and tell you whether your frames qualify.

Sources

1. IRS, *Energy Efficient Home Improvement Credit* (credit rules; $600 window cap; eligibility through December 31, 2025), retrieved October 1, 2026.
2. USGlass Magazine, *Aluminum Prices Surge 27% as Tariffs Pressure Construction Costs*, September 14, 2026 (BLS PPI August 2026; AGC analysis; Fenestration Canada counter-tariff details).
3. Energy Swing Windows, *Window Replacement in 2026*, November 12, 2025, updated March 20, 2026 (5–10% price increase; DOE 25–30% heating/cooling estimate).
4. r/HomeImprovement quote threads, 2026: *What’s the going rate on windows?* and *Total window replacement*, retrieved October 1, 2026.
5. ProFindr, *Foggy Window Glass Replacement Cost Guide (2026)*, June 2026 (IGU, insert, and defogging price bands).
6. Kiplinger, *Energy-efficient home improvement credits*; CNBC, *How to claim home energy tax credits* (credit-termination context).
7. Texas Comptroller SECO, *IRA-funded rebate programs* (HOMES/HEAR status, August 21, 2026 update).