20 Best Window Companies in Ontario, NY (2025 Reviews)
If you’re thinking of upgrading to new windows, our list of 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
A guide on the best window installation companies in Ontario may not seem like the most captivating article on EcoWatch, but trust us, windows have more of an impact on your life than you might realize. During the cold winter months, the last thing you want is your heat to leak out of your drafty windows.
Installing energy-efficient windows on your home can help you save money every month on your power bills — and you can help the environment as well.
We’ve made this guide on the top installation companies to help you in your research, so you can not only enjoy brand-new windows, but also save money on your energy bills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- 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 Reviews team evaluated many window installation companies across Ontario to narrow our list down to the best ones. The installers mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service and beyond.

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 offers 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 installation industry. The provider has hundreds of positive reviews from customers on online review websites.
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 perfect provider for you.
Energy Efficiency of Window World WindowsThere are a wide variety of window types that Window World offers, some of which are Energy Star products. 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?Although prices are not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. For more accurate information on the cost, you can receive a quote from the company.

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 offers the best availability in Ontario. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation industry. The provider has hundreds of positive reviews from customers on online review websites.
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 perfect provider for you.
Energy Efficiency of Renewal by Andersen WindowsThere are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. 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?Although prices are not readily 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. For more accurate information on the cost, you can receive a quote from the company.
Please note that the following companies are national, which means the quality of the service may vary depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for every provider.
More Window Companies in Ontario
Renewal by Andersen
Syracuse, NYEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Skylights
Bay Windows
Window Replacement/Installation
Glass Doors
Double-Hung
Becker Glass Block
Spencerport, NYEducational Website
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Glass Doctor of Finger Lakes
Canandaigua, NYGood Customer Service
Educational Website
Price Transparency
Services Offered
Custom Glass
Glass Repair
Window Replacement/Installation
Mirrors
Glass Showers
Energy-Efficient Options
Window Repair
Medina Windows
Lyndonville, NYFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Glass Doors
Custom Window Designs
Universal Windows Direct of Syracuse
Syracuse, NYPrice Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Double-Hung
Energy-Efficient Options
Glass Doors
Bay Windows
Window Replacement/Installation
Glass Doctor of Syracuse, NY
Syracuse, NYEducational Website
Price Transparency
Services Offered
Glass Showers
Custom Glass
Energy-Efficient Options
Window Repair
Mirrors
Window Replacement/Installation
Glass Repair
South Seneca Vinyl
Romulus, NYPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Custom Window Designs
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Glass Doors
Vinyl Frames
Double-Hung
Mr. Handyman of The Finger Lakes and Sodus Point
Auburn, NYFree assessment
Educational Website
Price Transparency
Good Customer Service
Timely Service
Services Offered
Window Replacement/Installation
Pink Rose Home Service
Syracuse, NYPrice Transparency
Services Offered
Window Replacement/Installation
JK General Contracting
Syracuse, NYFree assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Mr. Handyman of Rochester South and East
East Rochester, NYEducational Website
Good Customer Service
Timely Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Matthews & Fields Lumber
Rochester, NYFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Genesee Glass & Mirror Inc.
Rochester, NYGood Customer Service
Educational Website
Services Offered
Glass Repair
Glass Showers
Window Replacement/Installation
Mirrors
Custom Glass
Rochester Colonial Manufacturing
Rochester, NYEducational Website
Price Transparency
Free assessment
Services Offered
Fiberglass Frames
Window Replacement/Installation
Hawkeye Glass Block and Basement Solutions
Rochester, NYGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Pace Window & Door Co
Victor, NYPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Vinyl Frames
Glass Doors
Window Replacement/Installation
Bay Windows
Erie Materials
Auburn, NYPrice Transparency
Services Offered
Vinyl Frames
Window Replacement/Installation
Glass Doors
Mirrors
Skylights
Comfort Windows & Doors
Syracuse, NYGood Customer Service
Timely Service
Free assessment
Educational Website
Services Offered
Wood Frames
Glass Doors
Double-Hung
Vinyl Frames
Bay Windows
Glass Showers
Energy-Efficient Options
Window Replacement/Installation
Pella Windows & Doors of Rochester
Rochester, NYFree assessment
Good Customer Service
Educational Website
Services Offered
Double-Hung
Glass Doors
Window Replacement/Installation
Trade-Mark Construction
Syracuse, NYEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
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
By switching to energy-efficient windows, you and your family can take advantage of several benefits, such as:
- Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: If you have an older home, your windows are most likely in need of replacement. Upgrading your windows can improve the insulation in your home and also help increase the value of your property if you decide to sell.
- Reduce your carbon footprint: In Ontario, you can lower your indirect greenhouse gas emissions by about 65 pounds per year after you switch to energy-efficient windows.
- Save money on electricity bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% because you use less energy.
Estimated Cost of Window Replacement in Ontario
When looking into window installation, each company offers different services and prices. Let’s go over some average costs and services.
How Much Do New Windows Cost?
The national average cost to replace a single window is about $600 but can range from $200 to $1,200. How much it will cost is based on several factors, including number of windows, the location of your home, size, material, type and more.
With windows, efficiency is one of the most important factors for most homeowners. Windows with higher efficiency may cost more initially, but by increasing the efficiency of your home — particularly during the winter — they can provide many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Ontario homeowners $357+ per year after replacing single-pane windows.
Another factor that influences the total cost is the material you choose for your frame. Aluminum frames are typically the least expensive and are sturdy and light, but they provide poor insulation. On the other hand, wood frames are the most expensive, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
The first step of a window replacement is to decide whether you want a full-frame or pocket installation.
Full-frame installations involve replacing the full window, including the sill, trim and frame. Full-frame installations are necessary when you want a new style or your window has considerable damage. These installations are more involved and will raise the overall cost. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are on the simpler end and will be less expensive, but you can’t do this type of installment if you have any pre-existing rot or water damage.
If you’re not sure which kind of window installation service you need, your installer should be able to assist you. Generally, the decision is based on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- 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
In our hunt to make your home improvements easier and more eco-friendly in Ontario, the EcoWatch Reviews team landed on the above companies as the top window installation companies in the city. We have reviewed the best window replacement companies in Ontario primarily based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows have been shown to lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
Since 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 the list because of the low odds that they would serve the average homeowner in Ontario.
Work Quality
When choosing new windows, the quality and range of services can often play just as important of a role in insulation and performance as the type of window you opt for. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another super important review factor. If the majority of customers don’t have positive things to say about their experience with a certain installer, it won’t be featured on EcoWatch.
Cost
This one is a give-and-take: as with most services, cheap window companies won’t always provide the highest quality service. On the other hand, we want to make sure we’re highlighting companies that offer a spectrum of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. That’s why window installation companies with lengthy warranties for products, parts and labor 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 these issues. If a company has less than 10 years of experience, it loses points in this category.
Ontario, NY Window Replacement FAQs
How much does window installation cost?
The typical cost to install a single window can range between $450 and $650. There are several factors that affect how much it costs, such as how energy-efficient the windows are, styles and sizes of windows, the materials used in designing the windows, the number of windows, your property’s location and local labor costs.
What type of window is the most energy-efficient?
Generally, double-pane windows will be more efficient than single-pane windows and windows that don’t open are more efficient than windows that do. If you want to be sure you’ll get the most energy-efficient windows, look for models that have the blue Energy Star certification — they’re certified energy-efficient by the U.S. Department of Energy.
Can you replace your own windows?
If you’re handy and have the time and patience to do the job right, you may be able to install your own windows. However, if you don’t have the time or know-how, we recommend getting a professional to do it for you.
When is the best time of year to replace windows?
Even though you can install windows any time of year, warmer weather is often better for installing replacement windows. Additionally, the weather should be dry, because rain can make the installation harder.
How often do you need to 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.