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10 Best Window Replacement Companies in Ontario, CA

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Written By David Cusick

Last Updated April 2024

Windows play an important role in your house's appearance and energy efficiency. Replacing your windows is a great way to increase the value of your home. If your windows are on the older side, 25–30% of your house’s heat or cool air could be leaking out, according to the Department of Energy. In Ontario, this can add up to an extra $356 a year on your electric bills. Choosing a window installer can be tough, which is why we've put together a guide to the top window installers in Ontario.

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Top 10 Best Window Replacement Companies in Ontario

Window World of Los Angeles

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718 Arrow Grand Cir, Covina, CA 91722 (310) 564-7299 windowworldla.com

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Educational website

Good customer service

Price transparency

Services Offered

Glass doors
Vinyl frames
Bay windows
Double-hung
Window replacement/installation

Design Windows and Doors Inc.

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504 S Mountain Ave, Ontario, CA 91762 (909) 365-2179 designwindowsinc.com

Free assessment

Timely service

Good customer service

Price transparency

Educational website

Services Offered

Energy-efficient options
Vinyl frames
Wood frames
Bay windows
Glass doors
Double-hung
Window replacement/installation
Fiberglass frames

Sears Window Replacement

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5080 N Montclair Plaza Ln, Montclair, CA 91763 (626) 313-3940 searshomeservices.com

Price transparency

Good customer service

Timely service

Educational website

Free assessment

Services Offered

Glass doors
Window replacement/installation
Bay windows
Vinyl frames
Energy-efficient options
Double-hung
Storm/impact windows

La Verne Glass &Screen

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1782 N White Ave, La Verne, CA 91750 (909) 593-8317 laverneglassandscreen.net

Price transparency

Good customer service

Free assessment

Services Offered

Glass showers
Glass doors
Window replacement/installation
Mirrors
Custom window designs
Custom glass

United Builders Windows & Doors

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13238 White Fir Ct, Rancho Cucamonga, CA 91739 (909) 969-8976 unitedbuilders.info

Price transparency

Free assessment

Good customer service

Educational website

Services Offered

Glass doors
Window replacement/installation
Bay windows
Energy-efficient options
Double-hung

The Glass Company

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9630 7th St Unit 115, Rancho Cucamonga, CA 91730 (909) 994-8744 theglasscompanyca.com

Good customer service

Educational website

Free assessment

Price transparency

Services Offered

Window replacement/installation
Glass showers
Glass repair

CDA Windows and Doors

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10247 Bellegrave Ave Suite 102, Mira Loma, CA 91752 (951) 530-8714 cdawindowsanddoors.com

Good customer service

Educational website

Timely service

Free assessment

Price transparency

Services Offered

Glass doors
Vinyl frames
Window replacement/installation

Home Services at The Home Depot

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2980 S Euclid Ave, Ontario, CA 91762 (909) 332-5678 homedepot.com

Price transparency

Free assessment

Good customer service

Educational website

Services Offered

Screen repair
Window replacement/installation
Custom window designs
Vinyl frames
Storm/impact windows
Glass showers
Glass doors
Energy-efficient options
Mirrors

Hometime Windows & Doors

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1081 W 9th St, Upland, CA 91786 (909) 288-4604 hometimewindows.com

Price transparency

Educational website

Free assessment

Good customer service

Services Offered

Glass doors
Window replacement/installation
Energy-efficient options

A Super Glass

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4927 Newcastle St, Riverside, CA 92509 (951) 255-6621 asuperglassriverside.com

Price transparency

Good customer service

Services Offered

Glass doors
Glass showers
Window replacement/installation
Mirrors
Window repair
Glass repair
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on window replacement companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How Much Does Window Installation Cost In Ontario?

Window installation and replacement costs will be influenced by several factors, including the materials you choose, the number and size of the windows, and how difficult your windows are to access or install. On average, homeowners in Ontario spend roughly $280 per window*. Below are additional cost breakdowns. *Cost data based on sample pricing for window installation from multiple retailers and adjusted for local cost of living.

When To Replace Windows

New, energy-efficient windows can substantially improve your home's noise reduction, appearance, comfort, insulation, and value. Obvious signs that it's time for window replacement include the following:

  • Drafts and cold air coming in from old, loose-fitting windows.
  • Inefficient and outdated window styles that reduce your home’s curb appeal.
  • Windows that are hard to open, close, or lock properly due to age and wear.
  • A chilly house and high energy bills due to poor window insulation.
  • Fogging between window panes, condensation issues, or rotting window frames that allow moisture intrusion into the home.

How To Choose a Window Company

Hiring an experienced window installer helps ensure good results and a great experience. Below, we outline the main criteria for choosing a qualified window installer.

Experience

Seek out an established local window company with many years or decades of success installing all types of windows. Seasoned providers are more likely to be able to seamlessly accommodate Ontario's climate and local homeowner needs. To confirm a company deliver quality work, request references from recent customers.

Certifications

Choose companies that have certifications from leading window brands, and that have Fenestration and Glazing Industry Alliance (formerly AAMA) certification. Having certification shows they've been properly trained in installation best practices. Make sure installers are staff rather than subcontractors, and confirm that any technicians working on your home are certified.

Reputation

Read through online reviews, check the Better Business Bureau (BBB), and request local references. Review customer feedback to make sure that the contractor consistently provides quality work and good customer service. Avoid contractors that have complaints of shoddy work or unfinished jobs.

Process

The right company will take time to provide you with a detailed project plan, timeline, expectations, and reviews of all material and installation options. Beware of vague quotes or timelines that don't provide enough specifics upfront. Look for ongoing communication throughout the process to avoid surprises down the road.

Warranties

Look into window installers that offer guarantees on labor and materials. This demonstrates confidence in their work. Seek out companies with unlimited lifetime warranties that can transfer to new homeowners.

Materials

Make sure your window installer offers windows that are built to last and top energy-saving window brands within your budget. Look for design flexibility, good energy ratings, and enhanced UV protection. Check that the window materials also come with manufacturer warranties.

Frequently Asked Questions About Window in Ontario, CA

The ideal time to install windows in Ontario is when temperatures are moderate, generally during spring, winter or fall. These conditions allow professionals to work with less worry about extreme temperatures.

The right type of replacement windows for your Ontario home depends on the year your home was built –the average house in Ontario was built around 1975. For older homes, you may want to consider efficient windows such as double-glazed windows, which are made to keep your home cool in the summer and warm in the winter. Wood frames also have a classic look that's perfect for older homes. For more modern homes, you can think about vinyl windows, which are durable, affordable and have a modern look.

Windows made from wood, vinyl, or fiberglass are known to last the longest, with some lasting up to 45 years. Vinyl windows are especially durable and low-maintenance, making them an excellent choice if you want windows that can last a long time. Extra glazing can help reduce your cooling and heating bills in the long run. This is especially helpful during Ontario's hot summers.

The window installation process typically involves measuring and ordering the windows, prepping the surrounding area for installation, removing the old window, putting in the new one, and insulating the frame. Depending on the type of window being put in, additional steps may be required.

Window replacement companies in Ontario typically offer a variety of services, including window installation, fixing windows, window maintenance, window cleaning, window tinting, and weatherproofing.

Getting windows installed by a professional can provide a number of benefits. Professional installers can guarantee that your windows are properly installed, weatherproofed, and insulated, preventing air leakage and maximizing energy efficiency. Professional installers are also well-equipped with the necessary tools and techniques to get the job done, which can save you time and money.

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