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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Why you can trust EcoWatch
The EcoWatch team is all about finding solutions for eco-conscious homeowners in Ontario. If your windows are made of traditional materials, or are outdated or damaged, you could be sending 25-30% of your house’s heat or cool air right out of them.
Replacement windows improve your home’s insulation, not only making you more comfortable during extreme temperatures, but also saving you some money and helping the environment.
We’ve compiled a list of the best installation companies to help you in your research, so you can not only take advantage of brand-new windows, but also save money on your energy bills.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Ontario
The EcoWatch team researched dozens of providers that serve the Ontario area to find the top window installation companies by our standards. The providers mentioned in this article scored best in our review categories, which include energy-efficient offerings, local expertise, price, availability, customer service and more.
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 has windows expertise in Ontario. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window installation industry for around 27 years.
If you’re looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, Window World may be the company for you.
Energy Efficiency of Window World WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Window World cost in Ontario?Window World does not list prices on its website, but it's known for offering some of the most affordable window installations around. You can ask for a free quote on its website for more information about pricing.
Milgard Windows & Doors
- EnergyStar Partner
- Wide network of installers
- Lifetime warranty available
- Entails hiring third-party contractors
- Limited additional services
Milgard Windows & Doors has the best local installation in Ontario. It's a family-owned and -operated window replacement company, which primarily serves the West Coast. Milgard has been in the window installation industry for around 60 years.
If you’re looking for a company that offers competitive pricing, a comprehensive warranty and installers that all have a minimum of 15 years of window installation experience, Milgard may be the company for you.
Energy Efficiency of Milgard Windows & Doors WindowsThe 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. Not all of Milgard’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Milgard Windows & Doors cost in Ontario?Milgard does not list prices on its website, but it offers different kinds of windows at varying price points. You can ask for a free quote on its website for more information about pricing.
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 has the best availability in Ontario. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window installation industry for around 27 years.
If you’re looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, Andersen may be the company for you.
Energy Efficiency of Renewal by Andersen WindowsA 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. Not all of Andersen’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Ontario?Andersen does not list prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can ask for a free quote on its website for more information about pricing.
We aim to be unbiased and transparent by including pros and cons for every provider. Additionally, any partnerships do not influence our reviews.
More Window Companies in Ontario
Renewal by Andersen of Los Angeles
Torrance, CA- Good Customer Service
- Free assessment
- Price Transparency
- Educational Website
Services Offered
- Glass Doors
- Double-Hung
- Bay Windows
- Window Replacement/Installation
- Skylights
United Builders Windows & Doors
Rancho Cucamonga, CA- Price Transparency
- Educational Website
- Free assessment
- Good Customer Service
Services Offered
- Bay Windows
- Double-Hung
- Glass Doors
- Window Replacement/Installation
- Energy-Efficient Options
SoCal Window Pros
San Dimas, CA- Free assessment
- Good Customer Service
- Educational Website
Services Offered
- Window Replacement/Installation
Hometime Windows & Doors
Upland, CA- Free assessment
- Good Customer Service
- Price Transparency
- Educational Website
Services Offered
- Energy-Efficient Options
- Glass Doors
- Window Replacement/Installation
Molding's Plus Inc
Ontario, CA- Good Customer Service
- Price Transparency
- Free assessment
- Educational Website
Services Offered
- Window Replacement/Installation
- Glass Doors
La Verne Glass &Screen
La Verne, CA- Good Customer Service
- Free assessment
- Price Transparency
Services Offered
- Mirrors
- Custom Window Designs
- Custom Glass
- Glass Showers
- Glass Doors
- Window Replacement/Installation
J. R. Door & Window Inc
Upland, CA- Price Transparency
- Educational Website
- Good Customer Service
- Free assessment
Services Offered
- Window Replacement/Installation
Madison Window Products
Rancho Cucamonga, CA- Good Customer Service
Services Offered
- Double-Hung
- Energy-Efficient Options
- Window Replacement/Installation
- Vinyl Frames
Retro Windows and Patio Doors LLC
Fontana, CA- Educational Website
- Free assessment
- Good Customer Service
- Price Transparency
Services Offered
- Glass Doors
- Energy-Efficient Options
- Tempered Glass
- Window Replacement/Installation
The Glass Company
Rancho Cucamonga, CA- Educational Website
- Free assessment
- Price Transparency
- Good Customer Service
Services Offered
- Glass Showers
- Glass Repair
- Window Replacement/Installation
Design Windows and Doors Inc.
Ontario, CA- Price Transparency
- Good Customer Service
- Timely Service
- Educational Website
- Free assessment
Services Offered
- Bay Windows
- Fiberglass Frames
- Energy-Efficient Options
- Window Replacement/Installation
- Double-Hung
- Glass Doors
- Wood Frames
- Vinyl Frames
Mancino Door & Window, Inc.
Glendora, CA- Price Transparency
- Good Customer Service
- Educational Website
- Free assessment
Services Offered
- Window Replacement/Installation
Window World of Los Angeles
Covina, CA- Good Customer Service
- Price Transparency
- Educational Website
- Free assessment
Services Offered
- Double-Hung
- Bay Windows
- Window Replacement/Installation
- Glass Doors
- Vinyl Frames
CDA Windows and Doors
Mira Loma, CA- Educational Website
- Good Customer Service
- Timely Service
- Free assessment
- Price Transparency
Services Offered
- Glass Doors
- Vinyl Frames
- Window Replacement/Installation
Andes windows & doors
Norco, CA- Educational Website
- Free assessment
- Price Transparency
- Good Customer Service
Services Offered
- Double-Hung
- Window Replacement/Installation
- Vinyl Frames
- Bay Windows
- Glass Doors
Window Professors
San Dimas, CA- Good Customer Service
- Educational Website
- Timely Service
- Free assessment
- Price Transparency
Services Offered
- Window Replacement/Installation
Energy Core Construction
Anaheim, CA- Good Customer Service
- Educational Website
- Timely Service
- Free assessment
- Price Transparency
Services Offered
- Window Replacement/Installation
- Energy-Efficient Options
- Bay Windows
- Glass Doors
A Super Glass
Riverside, CA- Price Transparency
- Good Customer Service
Services Offered
- Glass Doors
- Mirrors
- Glass Showers
- Window Replacement/Installation
- Glass Repair
- Window Repair
WMB Windows
Ontario, CA- Free assessment
- Price Transparency
- Good Customer Service
- Educational Website
Services Offered
- Window Replacement/Installation
- Energy-Efficient Options
- Vinyl Frames
Home Services at The Home Depot
Ontario, CA- Price Transparency
- Free assessment
- Educational Website
- Good Customer Service
Services Offered
- Energy-Efficient Options
- Custom Window Designs
- Window Replacement/Installation
- Screen Repair
- Glass Showers
- Storm/Impact Windows
- Vinyl Frames
- Mirrors
- Glass Doors
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
There are quite a few perks of switching to energy-efficient windows. A few reasons you may want to consider making the switch include the following:
- Save money on electricity bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% since you need less energy.
- Protect your investment: When you have an older home, your windows could also be outdated or drafty. Upgrading your windows is an important part of maintaining your property and its value.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
- Reduce your carbon footprint: Reducing how much energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 117 pounds per year on average.
Estimated Cost of Window Replacement in Ontario
Windows come in various shapes and sizes, so costs and services will vary remarkably. Here are the typical costs and services that you can find from window installation companies.
How Much Do New Windows Cost?
According to our research, the national average cost of installing a single window is around $600. However, window replacement costs can range from $200 to $1,200 for each window. How much it will cost varies based on several factors, such as size, number of windows, material, type, the location of your home and more.
Bear in mind that energy-efficient windows may cost more, but Energy Star estimates the upgrade will save you between $101 and $583 per year when installing single-pane windows and between $27 and $197 per year when you install double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.
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 (or retrofits) involve replacing a window within its existing frame, which makes pocket installations more simple and affordable. But, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
Your window replacement company will be able to help you choose what’s best for your needs. In Ontario, the decision will mostly be based on how old your home is and if there’s any damage. Wood can decay if not maintained properly over the years, so it’s a good idea to have a professional check your frames and window sills.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Ontario
EcoWatch differs from other reviewers because we look at these companies through a sustainability lens. Along with energy efficiency, we evaluated window companies all across the state and assigned rankings based on the following methodology:
Service Area
Because this is a guide for Ontario, we paid more attention to companies that serve the city. There are certainly reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Ontario.
Work Quality
We’re willing to bet that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer on this list to ensure its technicians are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent online reviews to find the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction may be the factor we place the most value on, as it reflects the quality of services across most other categories, including cost, quality of parts, quality of installation, professionalism, warranty and more.
Cost
This one is a give-and-take: as with other services, cheap window installers won’t always provide the most quality service. On the other hand, we want to make sure we’re highlighting companies that offer a wide range of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Ontario’s climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of Ontario window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Ontario, CA Window Replacement FAQs
What is the average cost to install new windows in a home?
The national average cost of replacing a window is about $600 but can range from $200 to $1,200, depending on several factors. The price is typically dependent on the size of the window, the type and material of the window and the location of your property. Also, remember that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
What are the most common types of replacement windows?
There are various types of windows you can get for your home, including transom windows, picture windows, slider windows, awning windows, double-hung and single-hung windows, casement windows and bay windows.
When do I have to use a window installation company?
Unless you’re handy and have all the tools you need to replace your own windows, we recommend hiring the pros. The process of installing windows is quite involved and can take anywhere from four to six hours for one window. Although it’s tempting to try to save some money by doing it yourself, hiring a professional is a faster, more efficient and much safer alternative.
How often do you need to replace your windows?
Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, they should probably be replaced. Apart from that, if your windows have any damage on them, or they have become difficult to open or close, they may be in need of replacement.