20 Best Window Companies in Ontario, CA (2024 Reviews)

If you’re thinking about getting new windows, our guide to the best window installation companies can help.

We analyzed all the top-rated window companies in Ontario and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated February 01, 2024

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

The EcoWatch team is all about finding solutions for eco-conscious homeowners in Ontario. If your windows are outdated or drafty, you could be sending 25-30% of your house’s heat or cool air out of them.

Fortunately, saving you energy with more efficient windows also helps our goals of conserving energy and the resources it takes to produce it.

Unlike other sites, EcoWatch ranks window installation companies based on energy efficiency while also factoring in cost, customer satisfaction and service area.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Ontario

The EcoWatch team evaluated dozens of window providers across Ontario to narrow our list down to the best ones. We assessed the providers on their energy-efficient offerings, local experience, coverage area, price, customer service and more.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen provides the best availability in Ontario. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the window installation industry, and it has become one of the best companies in Ontario.

It uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

Renewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in Ontario?

Even though pricing is not available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like more accurate pricing information, you can receive a quote on the company’s website.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in Ontario. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the window installation industry, and it has become one of the best companies in Ontario.

It is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window World carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Ontario?

Even though pricing is not available on Window World’s website, it's known for offering some of the most affordable window installations around. If you’d like more accurate pricing information, you can receive a quote on the company’s website.

Milgard Windows & Doors logo
FAST QUOTE
as little as 30 seconds
Excellent Reputation

Milgard Windows & Doors

★★★★★
BBB Rating: A
Locations: West Coast
Founded: 1962
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Wide network of installers
  • Pros icon Lifetime warranty available
Cons:
  • Pros icon Entails hiring third-party contractors
  • Pros icon Limited additional services

Milgard Windows & Doors provides the best local installation in Ontario. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. This company has 60 years of experience in the window installation industry, and it has become one of the best companies in Ontario.

It offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience.

Energy Efficiency of Milgard Windows & Doors Windows

Milgard Windows & Doors carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. The company manufactures its own products, which gives it the freedom to make custom windows based on the climate. The company designs its own vinyl compounds and profiles to ensure a heat-stable product that performs as advertised.

How much does Milgard Windows & Doors cost in Ontario?

Even though pricing is not available on Milgard’s website, it offers different kinds of windows at varying price points. If you’d like more accurate pricing information, you can receive a quote on the company’s website.

Universal Windows Direct logo
FAST QUOTE
as little as 30 seconds
Best Warranty

Universal Windows Direct

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 2002
Pros:
  • Pros icon Makes charitable contributions
  • Pros icon Manufactures products in-house
  • Pros icon Wide variety of products and services
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Limited service area
  • Pros icon Some installations carried out by third-party contractors
  • Pros icon Quality of service will depend on your area

Universal Windows Direct provides the best warranty in Ontario. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. This company has 20 years of experience in the window installation industry, and it has become one of the best companies in Ontario.

It has an industry-leading warranty covering products, parts and workmanship for life.

Energy Efficiency of Universal Windows Direct Windows

Universal Windows Direct carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.

How much does Universal Windows Direct cost in Ontario?

Even though pricing is not available on Universal’s website, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. If you’d like more accurate pricing information, you can receive a quote on the company’s website.

We aim to be unbiased and transparent by including pros and cons for every installer. Additionally, any partnerships do not influence our rankings.

More Window Companies in Ontario

Renewal by Andersen of Orange County

Laguna Hills, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Skylights
  • Service icon Window Install & Replacement
  • Service icon Bay Windows
  • Service icon Andersen
  • Service icon Commercial Windows
  • Service icon Sliding Glass Doors

Website: https://www.renewalbyandersen.com/window-company/89-orange-county-ca/about-us
Address: 22982 Alcalde Dr, Laguna Hills, CA 92653
Phone: (949) 265-7600

Window World of Los Angeles

Covina, CA
4.5
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Bay Windows
  • Service icon Sliding Glass Doors
  • Service icon Vinyl Frames
  • Service icon Double-Hung

Website: https://www.windowworldla.com/
Address: 718 Arrow Grand Cir, Covina, CA 91722
Phone: (310) 564-7299

United Builders Windows & Doors

Rancho Cucamonga, CA
5.0
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Energy-Efficient Options
  • Service icon Sliding Glass Doors
  • Service icon Bay Windows
  • Service icon Commercial Windows

Website: https://unitedbuilders.info/
Address: 13238 White Fir Ct, Rancho Cucamonga, CA 91739
Phone: (909) 969-8976

SoCal Window Pros

San Dimas, CA
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Install & Replacement

Website: https://socalwindowpros.com/
Address: 482 W Arrow Hwy Unit A, San Dimas, CA 91773
Phone: (909) 394-7777

Hometime Windows & Doors

Upland, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Window Install & Replacement

Website: https://www.hometimewindows.com/
Address: 1081 W 9th St, Upland, CA 91786
Phone: (909) 288-4604

Molding's Plus Inc

Ontario, CA
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement

Website: https://www.moldingsplus.com/
Address: 1856 S Grove Ave, Ontario, CA 91761
Phone: (909) 947-3310

La Verne Glass &Screen

La Verne, CA
4.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Glass Showers
  • Service icon Custom Glass
  • Service icon Storm Doors
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Mirrors

Website: http://www.laverneglassandscreen.net/
Address: 1782 N White Ave, La Verne, CA 91750
Phone: (909) 593-8317

J. R. Door & Window Inc

Upland, CA
4.6
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Milgard

Website: https://www.jrdoorandwindow.net/
Address: 615 N Benson Ave Unit I, Upland, CA 91786
Phone: (909) 949-9902

Madison Window Products

Rancho Cucamonga, CA
4.6
★★★★★
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Vinyl Frames
  • Service icon Energy-Efficient Options

Website: http://www.madisonwindowproducts.com/
Address: 8720 S Hellman Ave, Rancho Cucamonga, CA 91730
Phone: (909) 923-7091

Retro Windows and Patio Doors LLC

Fontana, CA
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Repair
  • Service icon Tempered Glass
  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Energy-Efficient Options

Website: http://www.retrowindowsanddoors.com/
Address: 9590 Catawba Ave, Fontana, CA 92335
Phone: (909) 500-4845

The Glass Company

Rancho Cucamonga, CA
4.5
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Commercial Windows
  • Service icon Glass Repair
  • Service icon Glass Showers
  • Service icon Window Repair

Website: http://theglasscompanyca.com/
Address: 9630 7th St Unit 115, Rancho Cucamonga, CA 91730
Phone: (909) 994-8744

Design Windows and Doors Inc.

Ontario, CA
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Bay Windows
  • Service icon Energy-Efficient Options
  • Service icon Marvin
  • Service icon Wood Frames
  • Service icon Fiberglass Frames
  • Service icon Vinyl Frames
  • Service icon Aluminum Frames
  • Service icon Milgard
  • Service icon Window Install & Replacement

Website: https://www.designwindowsinc.com/
Address: 504 S Mountain Ave, Ontario, CA 91762
Phone: (909) 365-2179

Mancino Door & Window, Inc.

Glendora, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement

Website: https://www.mdwdoors.com/
Address: 605 E Rte 66, Glendora, CA 91740
Phone: (626) 334-2525

CDA Windows and Doors

Mira Loma, CA
3.2
★★★★★
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Repair
  • Service icon Glass Doors
  • Service icon Sliding Glass Doors
  • Service icon Window Install & Replacement
  • Service icon Vinyl Frames

Website: https://www.cdawindowsanddoors.com/
Address: 10247 Bellegrave Ave Suite 102, Mira Loma, CA 91752
Phone: (951) 530-8714

Andes windows & doors

Norco, CA
3.5
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Vinyl Frames
  • Service icon Bay Windows
  • Service icon Window Install & Replacement

Website: http://andeswindows.com/
Address: 1665 Third St C, Norco, CA 92860
Phone: (951) 268-6611

Window Professors

San Dimas, CA
3.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Install & Replacement

Website: https://windowprofessors.com/
Address: 482 W Arrow Hwy Unit A, San Dimas, CA 91773
Phone: (909) 394-7777

Energy Core Construction

Anaheim, CA
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Energy-Efficient Options
  • Service icon Aluminum Frames
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Sliding Glass Doors

Website: https://energycore.net/
Address: 1241 N Lakeview Ave suite h, Anaheim, CA 92807
Phone: (866) 933-2218

A Super Glass

Riverside, CA
2.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Glass Showers
  • Service icon Glass Repair
  • Service icon Mirrors
  • Service icon Window Repair

Website: https://www.asuperglassriverside.com/
Address: 4927 Newcastle St, Riverside, CA 92509
Phone: (951) 255-6621

WMB Windows

Ontario, CA
2.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Energy-Efficient Options

Website: http://www.wmbwindows.com/
Address: 491 Kettering Dr, Ontario, CA 91761
Phone: (909) 923-1689

Home Services at The Home Depot

Ontario, CA
2.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Fiberglass Frames
  • Service icon Glass Doors
  • Service icon Window Repair
  • Service icon Window Install & Replacement
  • Service icon Glass Showers

Website: https://www.homedepot.com/l/Ontario-CA/CA/Ontario/91762/6884/services
Address: 2980 S Euclid Ave, Ontario, CA 91762
Phone: (909) 332-5678
Ontario Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Ontario, CA using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Ontario Saves You Money

Upgrading to energy-efficient windows can improve the comfort of your home and help you save on power bills. Here are more ways upgrading your windows could help you:

  • Save on energy bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
  • Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can improve the insulation in your home and also help raise the value of your home if you decide to sell.
  • Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
  • Decrease your carbon footprint: Because energy-efficient windows improve the insulation in your home, you can cut your carbon footprint by about 12%, according to Energy Star.

Estimated Cost of Window Replacement in Ontario

Each window installer provides various services and has varying costs based on a few factors.

How Much Do New Windows Cost?

According to our research, the average cost of installing a single window is around $600. However, window replacement costs can range from $200 to $1,200 a window. These estimates vary depending on the specifics of your installation, such as type, material, size, number of windows, the location of your home and more.

It’s also worth bearing in mind that energy-efficient windows will typically cost more upfront, but Energy Star estimates that switching out the windows on your Ontario home can mean an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you’ll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

How much your window installation costs will also vary based on the type of material you choose for the frames. Wood windows are generally the most expensive, although it depends on whether they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.

What Services do Window Installers Offer?

When it comes to window replacements, in general there are two types that your provider will offer: full-frame and pocket installations.

Full-frame installations are usually recommended when you want to change the style of your windows or your window has significant rot or deterioration. With this service, your installers will replace the entire window, including the frame, trim and sill. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are on the simpler end and won’t carry as large a bill, but you can’t do this type of installment if you have any pre-existing rot or water damage.

Your window installation company can help you decide which type of installation you need.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Ontario

In our hunt to find the most reliable, eco-friendly window installers in Ontario, the EcoWatch Reviews team landed on the above companies as the top window installation companies in the city. Along with energy efficiency, we analyzed window companies all across the state and ranked them using the following methodology:

Service Area

Since this is a guide for Ontario, we gave more points to companies that serve the city. There are certainly other reputable providers that didn’t make our list because they wouldn’t be able to serve homeowners in Ontario.

Work Quality

We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company in our guide to ensure its technicians are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.

Customer Reviews

Customer feedback is another super important review factor. If most customers don’t have good things to say about their experience with a certain company, you won’t see it featured on EcoWatch.

Cost

This one is a give-and-take: as with most services, cheap window installation companies won’t always provide the most quality service. On the other hand, we want to make sure we’re highlighting companies that provide a wide range of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed previously, windows are a substantial investment, so you’ll want to be certain that investment is protected. Window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for quite some time. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Ontario, CA Window Replacement FAQs

What is the typical cost to install new windows?

The national average cost to replace a window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is often dependent on the location of your property, the type and material of the window and the size of the window. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.

What are the types of windows?

There are various kinds of windows you can get for your home, including casement windows, picture windows, slider windows, awning windows, transom windows, double-hung and single-hung windows and bay windows.

When do I have to use a window installation company?

You should use a window installation company whenever you need to upgrade your windows. Installing windows is a complex process that can be difficult to do on your own, so it’s best left to the professionals.

When is it time to replace your windows?

Windows generally have a lifespan of 20 to 30 years, but anytime you see damage on your windows, it’s a good idea to have an expert take a look at them to determine if they are in need of a repair or replacement.

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