20 Best Window Companies in Ontario, NY (2023 Reviews)
Looking to replace your home's windows? We've got all the information you need in this list of the best window installation companies.
We analyzed all the top-rated window companies in Ontario and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
Although renewable energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your home's energy efficiency can also have a considerable impact on home energy conservation. If your house has old or damaged windows, your HVAC system could be working extra hard to heat or cool your house. This means spending more on energy bills.
Installing efficient windows on your property can help you save money every month on your electricity bills — and you can help the environment, too.
Efficient windows are particularly important in Ontario, where winters are long and cold. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $357 a year.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Ontario
The EcoWatch Reviews team evaluated many window installation companies across Ontario to narrow our list down to the best ones. We assessed the providers based on energy-efficient offerings, price, local experience, customer service, coverage area and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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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. Window World has about 27 years of experience in the window replacement industry.
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, this may be the company for you.
Energy Efficiency of Window World WindowsWindow World has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality 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?Prices aren’t mentioned on Window World’s 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.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen offers the best availability in Ontario. This provider has 27 years of experience in the windows industry, and it has proved to be one of the most respected companies in the business. The provider has many positive reviews from customers on online review websites.
Andersen may be the company for you if you're looking for one that 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 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 offerings are Energy Star certified, so make sure you mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Ontario?Andersen doesn’t have any cost information listed 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. If you’d like to know for sure, you can request a quote on the company’s website.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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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 window installation company has been in business since 2002 and currently serves 27 states nationwide. The provider has hundreds of positive reviews from customers online.
It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThe 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. Not all of Universal’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Universal Windows Direct cost in Ontario?Prices aren’t mentioned on Universal’s website, but 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. The best way to know for sure is to request a free quote from the company.
One thing to note is that the companies in this section are national, meaning the quality of customer service may vary depending on your local crew. We have tried to stay unbiased and transparent by mentioning both pros and cons for each company.
More Window Companies in Ontario
Renewal By Andersen of Western New York
Rochester, NY-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Energy-Efficient Options
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Bay Windows
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Custom Window Designs
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Double-Hung
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Window Replacement
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Residential Windows
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Sliding Glass
Skyline Contractors LLC
Webster, NY-
Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Residential Windows
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Window Replacement
Glass Elegance
East Rochester, NY-
Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Residential Windows
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Glass Showers
Pella Windows & Doors of Rochester
Rochester, NY-
Good Customer Service
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Educational Website
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Free assessment
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Price Transparency
Services Offered
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Window Replacement
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Bay Windows
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Residential Windows
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Sliding Glass
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Double-Hung
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Commercial Windows
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Custom Window Designs
True Energy Solutions
East Rochester, NY-
Price Transparency
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Educational Website
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Free assessment
Services Offered
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Custom Window Designs
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Commercial Windows
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Window Replacement
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Residential Windows
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Energy-Efficient Options
Mr. Glass
Rochester, NY-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Window Replacement
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Commercial Windows
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Residential Windows
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Fast Delivery
Wonder Windows
Rochester, NY-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Custom Window Designs
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Residential Windows
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Glass Showers
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Sliding Glass
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Bay Windows
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Window Replacement
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Fast Delivery
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Double-Hung
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Commercial Windows
Pace Window & Door Co
Victor, NY-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Window Replacement
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Bay Windows
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Residential Windows
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Custom Window Designs
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Sliding Glass
Frontier Glass, Inc.
Rochester, NY-
Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Window Replacement
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Double-Hung
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Glass Showers
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Commercial Windows
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Residential Windows
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Custom Window Designs
Home Services at The Home Depot
Greece, NY-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Glass Showers
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Fast Delivery
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Sliding Glass
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Stained Glass
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Residential Windows
Allpro Renovations Construction
Rochester, NY-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Window Replacement
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Residential Windows
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Full-Service Installations
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Glass Showers
Comfort Windows & Doors
Rochester, NY-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Commercial Windows
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Glass Showers
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Fast Delivery
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Aluminum Window Frames
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Residential Windows
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Double-Hung
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Sliding Glass
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Bay Windows
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Custom Window Designs
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Window Replacement
Hawkeye Glass Block and Basement Solutions
Rochester, NY-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Glass Showers
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Residential Windows
Clearvue Glass Block Co
Rochester, NY-
Good Customer Service
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Free assessment
Services Offered
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Custom Window Designs
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Commercial Windows
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Window Replacement
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Glass Showers
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Residential Windows
Glass Doctor of Finger Lakes
Canandaigua, NY-
Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Glass Showers
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Window Replacement
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Window Repair
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Commercial Windows
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Double-Hung
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Residential Windows
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Custom Window Designs
Rose City Glass
Canandaigua, NY-
Price Transparency
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Free assessment
Services Offered
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Double-Hung
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Glass Showers
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Residential Windows
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Window Replacement
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Custom Window Designs
South Seneca Vinyl
Romulus, NY-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Bay Windows
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Custom Window Designs
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Double-Hung
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Window Replacement
Medina Windows
Lyndonville, NY-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Custom Window Designs
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Residential Windows
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Window Replacement
Universal Windows Direct of Syracuse
Syracuse, NY-
Good Customer Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Double-Hung
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Aluminum Window Frames
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Custom Window Designs
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Sliding Glass
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Commercial Windows
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Residential Windows
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Bay Windows
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Window Replacement
Comfort Windows Manufacturing
Liverpool, NY-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Window Replacement
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Double-Hung
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Commercial Windows
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Custom Window Designs
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Sliding Glass
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Glass Showers
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Bay Windows
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Aluminum Window Frames
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Residential Windows
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Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in Ontario, NY 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 benefits of upgrading to energy-efficient windows. A few reasons you may want to consider making the change are the following:
- Better temperature control in your home: Living in a warm place like Ontario often means needing your AC to keep your house cool. Energy-efficient windows can lower how much cool air is lost through your windows when cooling your home.
- Better temperature control in your home: When you live in a place like Ontario where the winters can get cold, you usually have to depend on your heater to keep your home warm. Energy-efficient windows can cut back on the amount of heat lost through your windows when heating your home.
- Protect your investment: When you have an older home, your windows could also be outdated or leaky. Upgrading your windows is an important part of maintaining your property and its value.
- Decrease your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Ontario, that's about 65 pounds per year on average.
Estimated Cost of Window Replacement in Ontario
When considering window installation, each company offers varying services and costs. Let's go over some average costs and services.
How Much Do New Windows Cost?
Typically, Ontario homeowners can anticipate their replacement window installations to range from $250 to $1,200. The average cost sits at around $600. This is because the cost of window installations depend on a variety of factors specific to your home, such as the size, material and number of windows you need to install, as well as where your property is located.
Whether or not you want to install energy-efficient windows is another factor that will affect the cost. These will usually cost more than other windows, but on the other hand, you can save about $357 a year on your energy bills in Ontario.
Costs will also vary based on the material you choose for your window frames. Aluminum frames are the least expensive. They're sturdy, light and maintenance-free, but offer poor insulation. Vinyl frames are a bit more expensive and offer good insulation. Composite frames made from wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
There are typically two types of window replacement services: full-frame and pocket installations.
Full-frame installations are usually recommended when you want a new style or your window has a lot of rot or deterioration. With this service, your professionals will replace the entire window, including the trim, frame and sill. Pocket installations (or retrofits) involve replacing a window within the existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
Your window installer should be able to help you choose which type of installation you should get.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Ontario
EcoWatch reviews differ from most reviews since we assess these companies through a sustainability lens. Along with energy efficiency, we assessed window companies all across the state and ranked them based on the following methodology:
Service Area
Because this is a guide for Ontario, we gave more points to companies that cover the city. There are other reputable providers that didn't make our list because they wouldn't be able to serve homeowners in Ontario.
Work Quality
When picking new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the brand you choose. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent customer feedback to determine the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including quality of parts, quality of installation, professionalism, warranty, cost and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing the prices of providers, we gave higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed, windows are a considerable investment, so you'll want to be certain that investment is well protected. Window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Ontario, NY Window Replacement FAQs
What is the average cost to install windows?
The national average cost to install one window is around $600 but can range between $200 and $1,200, based on a few different factors. The price is typically influenced by the location of your property, the size of the window and the type and material of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
Which kind of window should I get?
Generally, double-pane windows will be more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you'll have the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — they're certified energy-efficient by the U.S. Department of Energy.
What services do window installation companies provide?
Window installers visit your house to remove your old windows and replace them with new ones. Some providers install products made by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is finished.
How often should you replace windows?
Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Other than that, if your windows have any damage on them, or they have become difficult to open or close, they may need to be replaced.