Cost for replacement windows — Ontario, CA

Last updated: September 24, 2026

What affects the price

Replacing windows is a custom project, so the final total depends on a few specific variables. The size and style of the frames you choose—like double-hung versus casement—will change the materials cost. We also look at the glass packages, such as double or triple-pane options, and any energy-efficient coatings that help with insulation. The number of windows being replaced and the current condition of your home’s exterior framing play a role in the labor needed. Exact pricing confirmed free on the call.

About this service

Calculating the cost involves looking at the number of windows, the style of operation—like double-hung or sliding—and the added features like argon gas fills. Upgrading to higher-performing materials increases the upfront cost but can offer better insulation for your home. We provide a transparent breakdown so you know exactly what you are paying for.

Frequently asked in Ontario

Also serving nearby: Chino · Rancho Cucamonga · Jurupa Valley · Pomona · Fontana

All cities in California →

More on this: ENERGY STAR windows — efficiency ratings.

Service area details

Serving all of Ontario — population 182,457; about 3,650 residents per square mile across 50.0 sq mi. ZIP codes covered include 91758, 91761, 91762, 91764.

Neighborhoods served in Ontario: Downtown Ontario, Central Park, Archibald Ranch, Eastvale, Chino Hills, Rancho Cucamonga — and every surrounding area.