Wood & Fiberglass Window Replacement cost: Knoxville vs Nashville (2026)
Knoxville runs 2% lower than Nashville for wood and fiberglass window replacement — expect around $16,750 in Knoxville against $17,100 in Nashville, a difference of about $350.
Knoxville TN
Lower costTypically around $16,750
Nashville TN
Typically around $17,100
Knoxville vs Nashville: full breakdown
| Factor | Knoxville | Nashville |
|---|---|---|
| Typical 2026 cost | $16,750 | $17,100 |
| Estimated range | $9,600–$23,850 | $9,800–$24,350 |
| Labor index (vs US) | ×0.95 | ×0.97 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | $100 | $125 |
| Labor share | $9,200 | $9,400 |
| Materials/equipment | $7,550 | $7,700 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national wood and fiberglass window replacement range for local labor, climate and permits.
Is the gap worth worrying about?
A 2% difference on wood and fiberglass window replacement is minor — you'll typically see a wider spread just from getting multiple quotes in the same city, so don't let location drive the decision.
Wood and fiberglass window replacement by type: Knoxville vs Nashville
We localize each wood and fiberglass window replacement type separately for both metros, applying the same labor, climate and permit adjustments each time, so you're comparing like for like.
| Type | Knoxville | Nashville |
|---|---|---|
| Fiberglass | $9,600–$21,000 | $9,800–$21,450 |
| Composite | $10,550–$21,950 | $10,800–$22,400 |
| Aluminum-clad wood | $12,450–$25,750 | $12,700–$26,300 |
| Solid wood | $13,400–$28,600 | $13,700–$29,200 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national wood and fiberglass window replacement range for local labor, climate and permits.
Wood and fiberglass window replacement by number of windows: Knoxville vs Nashville
Wood and fiberglass windows are a premium upgrade — figure roughly $800–$2,500 per window installed depending on material, size, and finish. Cost scales with the number of openings, and wood typically runs higher than fiberglass.
| Size | Knoxville | Nashville |
|---|---|---|
| 5 windows | $4,400–$10,550 | $4,500–$10,800 |
| 10 windows | $8,650–$19,100 | $8,850–$19,500 |
| 15 windows | $12,950–$26,700 | $13,200–$27,250 |
| 20 windows | $17,200–$34,300 | $17,550–$35,000 |
| 25+ windows (whole home) | $21,000–$42,850 | $21,450–$43,750 |
These are 2026 planning figures for wood and fiberglass window replacement, localized to each city — not formal quotes.
What windows pros earn in each metro
About 55% of a wood and fiberglass window replacement bill goes to labor, so wage differences between these two metros matter more than almost anything else. These are real, government-sourced (BLS OEWS) installer wages, not estimates.
No BLS metro wage series for Knoxville; we use Tennessee regional price parity instead.
Nashville-Davidson--Murfreesboro--Franklin metro · about 6% below the US average installer wage.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for wood and fiberglass window replacement in either city
Two things line up in fall and winter: installers have open calendars and need the work, and manufacturers run their best promotions of the year. Buy then and you get both breaks at once.
How much should new windows really cost you?
Where a window budget goes wrong is usually the mismatch — premium frames paired with basic glass, or a good window sunk by a rushed install. Frame, glazing and install method each pull the price, and each deserves its own decision.
The value case
Vinyl, double-pane, low-E windows deliver most of the comfort and efficiency for the lowest price. For whole-home replacements on a budget, they're the sensible default.
The efficiency case
Where winters bite or summers punish, upgrading the glazing — triple-pane or a gas-filled low-E package — returns real money on heating and cooling bills, and ENERGY STAR-rated units can open the door to rebates. Put that upgrade money into the glass before you spend it on a fancier frame.
The install case
A perfect window installed badly leaks and fails. Full-frame replacement with proper flashing beats a cheap pocket insert in a rotted opening — match the install method to your home's condition, not just the price.
Frame material is the safe place to economize; the glass package and the install are not. Pick glazing for the weather you actually live with, stay with vinyl unless there's a real reason to move up, and don't buy your way under budget by accepting a rushed install.
Knoxville vs Nashville
Is wood and fiberglass window replacement cheaper in Knoxville or Nashville?
Knoxville comes out ahead here, at roughly $16,750 for wood and fiberglass window replacement compared with $17,100 in Nashville — a 2% ($350) gap as of 2026.
Why does wood and fiberglass window replacement cost more in Nashville than Knoxville?
It comes down to labor: Nashville indexes at 0.97 against Knoxville's 0.95. The mixed-vs-mixed climate difference, plus permit fees, adds to the gap.
How much is wood and fiberglass window replacement in Knoxville, TN?
In Knoxville, wood and fiberglass window replacement typically runs $9,600–$23,850 in 2026, with most homeowners paying around $16,750.
When is the cheapest time to buy wood and fiberglass window replacement — and does it differ by city?
It doesn't vary by location — Late fall and winter is the discount window in both Knoxville and Nashville (roughly 5–15% off), while spring and summer peak tends to be the most expensive in either city.
Should I choose where to live based on wood and fiberglass window replacement cost?
Probably not. Yes, $350 is a real gap, but it's a one-time cost you can partly offset in Nashville with off-season timing and tighter bids. Long-term factors like energy prices and home condition matter more than this one number.
Compare wood and fiberglass window replacement in other cities
Updated June 2026 · By Serhat Özçelik