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
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Updated February 01, 2024
Why you can trust EcoWatch
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 If your windows are outdated or drafty, you could be sending 25-30% of your house’s heat or cool air out of them.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
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Window Veteran
Window World
- 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
- Great industry reputation
- Award-winning company
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
- 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 WindowsRenewal 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
- EnergyStar Partner
- Large serice area
- Low prices relative to competitors
- Great industry reputation
- Lifetime warranty
- 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 WindowsWindow 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
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
- 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 WindowsMilgard 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
- Makes charitable contributions
- Manufactures products in-house
- Wide variety of products and services
- Lifetime warranty
- Limited service area
- Some installations carried out by third-party contractors
- 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 WindowsUniversal 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- Good Customer Service
- Free assessment
- Educational Website
- Timely Service
- Price Transparency
Services Offered
- Skylights
- Window Install & Replacement
- Bay Windows
- Andersen
- Commercial Windows
- Sliding Glass Doors
Window World of Los Angeles
Covina, CA- Educational Website
- Price Transparency
- Free assessment
- Good Customer Service
Services Offered
- Window Install & Replacement
- Bay Windows
- Sliding Glass Doors
- Vinyl Frames
- Double-Hung
United Builders Windows & Doors
Rancho Cucamonga, CA- Educational Website
- Free assessment
- Price Transparency
- Good Customer Service
Services Offered
- Window Install & Replacement
- Energy-Efficient Options
- Sliding Glass Doors
- Bay Windows
- Commercial Windows
SoCal Window Pros
San Dimas, CA- Good Customer Service
- Free assessment
- Educational Website
Services Offered
- Window Install & Replacement
Hometime Windows & Doors
Upland, CA- Good Customer Service
- Price Transparency
- Free assessment
- Educational Website
Services Offered
- Energy-Efficient Options
- Window Install & Replacement
Molding's Plus Inc
Ontario, CA- Educational Website
- Price Transparency
- Good Customer Service
- Free assessment
Services Offered
- Window Install & Replacement
La Verne Glass &Screen
La Verne, CA- Good Customer Service
- Free assessment
- Price Transparency
Services Offered
- Window Install & Replacement
- Glass Showers
- Custom Glass
- Storm Doors
- Custom Window Designs
- Commercial Windows
- Mirrors
J. R. Door & Window Inc
Upland, CA- Free assessment
- Educational Website
- Good Customer Service
- Price Transparency
Services Offered
- Window Install & Replacement
- Milgard
Madison Window Products
Rancho Cucamonga, CA- Good Customer Service
Services Offered
- Window Install & Replacement
- Vinyl Frames
- Energy-Efficient Options
Retro Windows and Patio Doors LLC
Fontana, CA- Free assessment
- Good Customer Service
- Educational Website
- Price Transparency
Services Offered
- Window Repair
- Tempered Glass
- Commercial Windows
- Window Install & Replacement
- Energy-Efficient Options
The Glass Company
Rancho Cucamonga, CA- Good Customer Service
- Price Transparency
- Free assessment
- Educational Website
Services Offered
- Window Install & Replacement
- Commercial Windows
- Glass Repair
- Glass Showers
- Window Repair
Design Windows and Doors Inc.
Ontario, CA- Good Customer Service
- Educational Website
- Price Transparency
- Timely Service
- Free assessment
Services Offered
- Sliding Glass Doors
- Bay Windows
- Energy-Efficient Options
- Marvin
- Wood Frames
- Fiberglass Frames
- Vinyl Frames
- Aluminum Frames
- Milgard
- Window Install & Replacement
Mancino Door & Window, Inc.
Glendora, CA- Good Customer Service
- Price Transparency
- Educational Website
- Free assessment
Services Offered
- Commercial Windows
- Window Install & Replacement
CDA Windows and Doors
Mira Loma, CA- Free assessment
- Timely Service
- Price Transparency
- Good Customer Service
- Educational Website
Services Offered
- Window Repair
- Glass Doors
- Sliding Glass Doors
- Window Install & Replacement
- Vinyl Frames
Andes windows & doors
Norco, CA- Educational Website
- Free assessment
- Price Transparency
- Good Customer Service
Services Offered
- Sliding Glass Doors
- Vinyl Frames
- Bay Windows
- Window Install & Replacement
Window Professors
San Dimas, CA- Good Customer Service
- Educational Website
- Timely Service
- Free assessment
- Price Transparency
Services Offered
- Window Install & Replacement
Energy Core Construction
Anaheim, CA- Good Customer Service
- Educational Website
- Timely Service
- Price Transparency
- Free assessment
Services Offered
- Window Install & Replacement
- Window Repair
- Energy-Efficient Options
- Aluminum Frames
- Glass Doors
- Bay Windows
- Sliding Glass Doors
A Super Glass
Riverside, CA- Good Customer Service
- Price Transparency
Services Offered
- Commercial Windows
- Window Install & Replacement
- Glass Showers
- Glass Repair
- Mirrors
- Window Repair
WMB Windows
Ontario, CA- Price Transparency
- Free assessment
- Educational Website
- Good Customer Service
Services Offered
- Window Install & Replacement
- Energy-Efficient Options
Home Services at The Home Depot
Ontario, CA- Free assessment
- Good Customer Service
- Educational Website
- Price Transparency
Services Offered
- Fiberglass Frames
- Glass Doors
- Window Repair
- Window Install & Replacement
- Glass Showers
Calculate how much you can expect to pay for window installation and replacement in Ontario, CA using our customized window cost calculator.
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
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Window Veteran
Window World
- 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.