Local research · updated July 2026
Replacement Windows in Merced, California
Merced sits in California's Central Valley near Yosemite foothills — extreme summer heat, Tule fog, ag dust, and UC Merced–era growth. About 44.4% of homes predate 1980 and the median year built is 1983. Merced County is ENERGY STAR South-Central / IECC 3B: low SHGC is the cooling priority. Title 24 applies. Valley heat glass, not Bay Area marine.
Short answer
In Merced, a standard replacement window (double-hung, casement or slider) typically costs $550–$3,130 installed. Bay and bow windows run $2,750–$8,805+, and a sliding patio door $1,650–$5,500. Frame material and the glass package decide where a project lands in that range.
Planning ranges built from NREL and BLS cost data, localized to Merced with the BEA Regional Price Parity for Merced, CA (2024). How we estimate →
44.4%
of Merced homes were built before 1980, the era of single-pane and early aluminum windows
Source: U.S. Census Bureau, 2019–2023 ACS 5-Year Estimates
1983
median year built across Merced's 29,208 housing units
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
Window installers in Merced
Compare companies serving Merced. Request a free, no-obligation quote and we route it to the company or a vetted local installer.
| Company | Location | Request a quote |
|---|---|---|
 4.8 · 200,000+ reviews | Fresno, CA | Get a quote → |
Renewal by Andersen of Central California
4.8 · 200,000+ reviewsFresno, CA showroom · serving the Merced 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.
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What drives window decisions in Merced
- South-Central / 3B: U ≤ 0.28, SHGC ≤ 0.23; SHGC moves summer bills.
- Title 24 makes low-SHGC glass effectively required on permitted jobs.
- UC Merced growth stock mixed with older ag-town housing — frame honestly from ACS.
- PG&E / CA IRA thin for windows; 25C expired.
Replacement windows & doors by type in Merced
Local cost ranges and South-Central-zone efficiency guidance for each window and door style, specific to Merced homes:
Ranges localized to Merced's cost level: national planning ranges shifted by the BEA Regional Price Parity for Merced, CA (98.3, U.S. = 100; 2024). How we estimate local costs →
Efficiency requirements for Merced's climate
Merced sits in the ENERGY STAR South-Central zone (IECC zone 3B (warm, dry), Merced County). Under the v7.0 specification, qualifying windows need a U-factor of 0.28 or lower and an SHGC of 0.23 or lower. Cooling-leaning climate: blocking solar heat gain (low SHGC) matters as much as insulation.
Not sure what these numbers mean? Read our plain-English guide to U-factor and SHGC.
What replacement windows cost here
Central Valley labor is relatively moderate. Title 24 and low-SHGC packages drive material cost. Federal 25C is gone. Itemize NFRC numbers.
For a breakdown by frame material and install type, see our full cost guide.
Rebates & incentives in California
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.
California's IRA rebates run through the California Energy Commission. The HEAR-funded HEEHRA program (delivered via TECH Clean California / The Switch Is On) launched for income-eligible households, but Phase I single-family rebates were fully reserved statewide as of early 2026, with a waitlist and a Phase II in design. HOMES funds are being routed into the Equitable Building Decarbonization Direct Install program and a Pay-for-Performance program that were not yet issuing rebates as of mid-2026. Confirm current availability first.
- Equitable Building Decarbonization Direct Install Program. A CEC-run program that provides no-cost efficiency and electrification retrofits for income-qualified households in target regions; envelope work can be included in a project scope, but it is contractor-delivered rather than a rebate you apply for. Confirm current region availability. (California Energy Commission program pages)
- SMUD Home Performance Program (Sacramento). SMUD, Sacramento's municipal utility, offers whole-home performance incentives that can include window upgrades meeting ENERGY STAR criteria when packaged with other qualifying efficiency work — one of the few California utility programs that pays anything toward windows. (SMUD rebates and Home Performance Program pages)
- Investor-owned utility programs (PG&E, SCE, SDG&E). California's large investor-owned utilities generally do not offer standalone window replacement rebates; their residential programs focus on heat pumps, weatherization, and financing. Windows mainly benefit indirectly through whole-home and financing offerings — check your utility's current program list. (PG&E, SCE, and SDG&E residential rebate pages)
California's Title 24, Part 6 Energy Code is among the strictest in the nation and applies to replacement windows, not just new construction — permitted replacements in most climate zones must meet low U-factor and low solar-heat-gain (SHGC) prescriptive limits.
Replacement windows in nearby metros
Not in Merced proper? These nearby markets carry the same local research: housing-age data, climate-zone specs, and current rebate status for each city:
Merced window replacement FAQ
›Do I need a permit to replace windows in Merced?
Yes in most cases under Title 24. City of Merced Building Division or Merced County. Upload compliance documentation.
›What efficiency numbers should windows hit?
ENERGY STAR South-Central: U-factor 0.28 or lower and SHGC 0.23 or lower. Cooling-first climate. Read the NFRC label.
›Are there rebates?
Federal 25C expired December 31, 2025. Confirm CEC IRA and PG&E status — standalone window rebates are uncommon. Budget on cooling savings.
›How is Merced different from Salinas?
Hot-dry Valley 3B vs Monterey Bay marine 3C. Merced is extreme heat and Tule fog; Salinas is damp and cooler. Different glass priorities.
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
- — San Joaquin Valley Air Pollution Control District; California Title 24
- — IRS, 25C Energy Efficient Home Improvement Credit (P.L. 119-21)