Local research · updated July 2026
Double-hung windows in Decatur, Alabama
Two vertically sliding sashes; both the top and bottom sash open. For Decatur's mixed-age housing stock (55.1% of homes predate 1980), double-hung window replacement is a common project — and in the ENERGY STAR South-Central zone, the number that matters most is a low SHGC (≤ 0.23) to block solar heat.
Short answer
Double-hung windows in Decatur typically cost $610–$2,775 installed per opening. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand.
NREL REMDB + BLS PPI, localized to Decatur (BEA Regional Price Parity, 2024). How we estimate →
$610–$2,775
installed range per opening for Double-hung window, from a mid-grade insert up to a premium or full-frame job
Source: NREL REMDB + BLS PPI, localized to Decatur
55.1%
of Decatur homes were built before 1980
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
SHGC ≤ 0.23
the ENERGY STAR v7.0 number that matters most in the South-Central zone
Source: EPA ENERGY STAR v7.0
Is a Double-hung window right for a Decatur home?
Both sashes slide vertically and typically tilt inward for cleaning.
Where it fits:
- Traditional and historic home styles
- Rooms facing walkways, porches, or patios (no outward projection)
- Easy cleaning from inside on upper floors
What to weigh:
- More potential air-leakage paths than hinged styles at equal quality
- Half the opening ventilates at any one time
Double-hung windows and Decatur's climate
Decatur sits in the ENERGY STAR South-Central zone (IECC zone 3A (warm, moist), Morgan County), where the priority is a low SHGC (≤ 0.23) to block solar heat.
Double-hung sashes seal against weatherstripping as they slide, so they have more potential air-leakage paths than hinged styles. In the South-Central zone, prioritize a well-built unit and low-SHGC glass (≤ 0.23) to offset that.
New to these numbers? See our plain-English guide to U-factor and SHGC and the full double-hung guide.
What Double-hung windows cost in Decatur
Double-hung window replacement in Decatur runs $610–$2,775 installed. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand. Tennessee Valley pricing tracks Huntsville satellite rates. Federal 25C is gone. Itemize NFRC numbers and permit.
That's the national range shifted to Decatur's cost level using the BEA Regional Price Parity for Decatur, AL (87.2, U.S. = 100; 2024). How we estimate local costs →
For a breakdown by frame material and install type, see our full cost guide.
Installers serving Decatur
A sample of companies with locations in the Decatur market. See the full Decatur directory for all listings, our map, and featured-partner disclosures.
| Company | Location | Request a quote |
|---|---|---|
 4.8 · 200,000+ reviews | Huntsville, AL | Get a quote → |
| 1Champion Replacement Windows of HuntsvilleChampion | Huntsville, AL | Get matched → |
| 2Champion Window Siding & PatioChampion | Decatur, AL | Get matched → |
| 3Window World of HuntsvilleWindow World | Madison, AL | Get matched → |
| 4Window World of Muscle ShoalsWindow World | Muscle Shoals, AL | Get matched → |
Renewal by Andersen of Northern Alabama
4.8 · 200,000+ reviewsHuntsville, AL showroom · serving the Decatur metro
Full-service manufacturer and installer, transferable warranty, local crews. Why it's our Top Pick
Get a quote →Listings compiled from manufacturer dealer locators and public business records. Premier and Sponsored Partners pay for placement and are labeled as such; star ratings shown are reported by the partner, with the source and date beside them. See our advertising disclosure. Contacting a company shares your details with it (or a vetted local installer) so it can reach you about your project.
Are you a window company? Claim your listing to take quote requests from Decatur homeowners directly.
Rebates & incentives in Alabama
The federal window tax credit (25C) ended for projects placed in service after December 31, 2025. If your windows were installed in 2025, you can still claim it on your 2025 return — but for new projects there is no federal window credit. State and utility programs are now the main source of window incentives.
Alabama's IRA Home Energy Rebates are administered by ADECA (Alabama Department of Economic and Community Affairs), which as of mid-2026 still lists the HOMES and HEAR programs as under development with no confirmed date for when households can access rebates. If and when they open, windows would generally qualify only through the whole-home HOMES modeled-savings pathway rather than as a direct rebate. Confirm current status with ADECA before relying on it. See our Decatur guide for the full program list.
Double-hung windows in Decatur: FAQ
›What efficiency numbers should a Double-hung window in Decatur meet?
Decatur sits in the ENERGY STAR South-Central zone (IECC 3A (warm, moist)). Qualifying units need a U-factor of 0.28 or lower and an SHGC of 0.23 or lower. Double-hung sashes seal against weatherstripping as they slide, so they have more potential air-leakage paths than hinged styles. In the South-Central zone, prioritize a well-built unit and low-SHGC glass (≤ 0.23) to offset that.
›How much does Double-hung window replacement cost in Decatur?
A useful planning range for Double-hung window replacement in Decatur is $610–$2,775 installed. The low end is a mid-grade vinyl insert from a regional installer; the top is a premium frame, a full-frame installation, or a full-service national brand. Tennessee Valley pricing tracks Huntsville satellite rates. Federal 25C is gone. Itemize NFRC numbers and permit.
›Do I need a permit to replace Double-hung windows in Decatur?
Replacement generally requires a permit, and new units must meet the current energy code. See our Decatur guide for local permitting and rebate details, and always confirm your installer pulls the permit.
Sources
- — U.S. Census Bureau, American Community Survey 5-Year Estimates (B25034, B25035)
- — EPA ENERGY STAR Version 7.0 Residential Windows specification
- — DOE/PNNL IECC climate zone assignments by county
- — NREL residential window cost analysis (planning ranges)