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Locally Manufactured With Pride.

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Welcome to Delco

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Excellent Reputation

Since 1989 our reputation exceeds expectations to go along with our positive customer reviews

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Expert Installation

Our teams of qualified and insured installers will transform your vision to reality

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Competitive Pricing

Dealing with a manufacturer direct will benefit our customers with lower costs

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Excellent Warranty

As a leader in the industry we provide the most comprehensive transferrable warranty in the business

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Maximum Energy Efficiency

Introducing the high performance SLIMLINE89 window that will improve efficiency by at least 24%

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Attractive Financing Options

Excellent deferral options to go along with low monthly payment programs. Replace today pay later

Take Advantage of Canada Greener Homes Grant

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Canada Greener Homes Grant

The Canada Greener Homes Grant you can receive up to $10,600 in grants to upgrade your windows and doors to high-performance ENERGY STAR® certified replacements to lower your power bill and reduce climate change.

Save energy on your gas bill, and make your home comfortable and modern with energy-efficient windows and doors. They will give a beautiful look, and make your home updated and stylish. The Canada Green Homes Grant will benefit homeowners throughout Ontario, as well as the environment.

You can take advantage of this grant, with our high-efficiency energy saving windows and doors. They are designed for durability, and long-lasting energy efficiency. You'll save money and have the peace of mind they are backed by our trusted warranty and service. Our professional team of installers will handle everything. Read More

Loan Information

CALL TODAY (416) 365-3834

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IntroducingSLIMLINE89 Series Window

More Light, More Strength, Bigger Energy Savings

Reduce your window’s exposure to the elements, while increasing energy efficiency. Delco’s Slimline89 delivers the slimmest window yet, while lowering your energy bills through advanced window frames. . . guaranteed!

Now available in Triple-Pane!

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What Homeowners Say


Amazing service and quality products. Installation was on time and on budget. Our windows look awesome. Edan gave us his full attention from the first call and every step of the way after. Highly recommend.

Adam Rivers Reviewer Image

Adam Rivers


New windows and door for basement and new metal/glass back door for main house - even through my indecisiveness and the covid-19 challenges Ayal and his installers were patient with me and I am very happy with the look and quality of the install.

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Geraint Reviewer Image



It was a pleasure dealing with Jack and all Delco's stuff. The windows arrived on the date for which were promised. The quality of the service, product and workmanship were excellent. I would gladly recommend Delco to anyone need Windows and Doors

Ruven Y. Reviewer Image

Ruven Y.


We're so happy with our new front door. Very high quality finish, beautiful window. Installation was impeccable and done very quickly. Hinge and 3-point lock mechanism fit perfectly and feel very solid. Very attentive customer service. Door really ups our curb appeal!

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Jim Bird Reviewer Image

Jim Bird


I just had my front door replaced and cannot say enough good things about this company. From start to finish their professionalism is outstanding, and the workmanship excellent. Would highly recommend

Maureen Fuller Reviewer Image

Maureen Fuller


Delco supplies my windows and doors for renovations throughout the GTA. Edan and his staff are the best. Well priced quality products and personalized service. Highly recommended.

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Noah Klar Reviewer Image

Noah Klar


We have 3 sliding doors and a double front door replaced. All work was done professionally but well qualified craftsman. Watching them work it was clear they new what they were doing and work is first class.

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R. Pierce


We used Delco to replace our windows and patio door and door glass inserts. We are very happy with the quality of the windows and patio door and were very impressed with the installers as well who were very professional and clean. Thank you Nasho and George for your hard work and patience. Also, a big thank you to Ayal who always returned my calls and answered all my questions.

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Sandra Reviewer Image



Delco provided all the exterior doors for our new home build. Ayal was great and the company is very customer service oriented. The doors look beautiful, the hardware is high end and the install went very well. Overall we are very happy with the product and service.

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Sarah Reviewer Image



Ayal and Edan were great to work with. They provided extensive product knowledge and had a great selection in their showroom. The windows and doors changed the whole look of the house and gave a much needed modern yet classic update. Great quality and workmanship! Thank you!

Stephanie Lannaci Reviewer Image

Stephanie Lannaci


Both my wife and I could not have been happier with the product and service displayed by the owner and the installers. They had kept true to there word and the timelines. The process was catered to our schedule and was seamless.

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Fabrizio Macieri


Had a great experience with Delco. They were professional and did a great job on time.

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Joey Oliveira


Our experience with Delco Doors has been very good. We needed to replace out front door. Our old 6 feet Steel doors were removed and replaced with Delco 8 feet Fiberglass Doors. The installation went very smoothly, and the guys made sure that everything was fitting squarely and tight. They cleaned up after they were done and were very pleasant to work with. Would highly recommend them.

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Angie Gandhi


A fantastic company to deal with from start to finish. They were professional, courteous and the project was completed in the timeframe agreed upon. Would highly recommend Delco.

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Linda Reviewer Image



I would recommend Delco Windows and Doors without any hesitation. The quality of the products is very good, the installation exceeded my expectations and the responsiveness and punctuality is impressive.

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Serban Dinca Reviewer Image

Serban Dinca


Very good and timely service. A pleasure to work with Edan Next time I need windows and doors I will definitely call them again

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Adrian Nema


Recently ordered a custom window from Delco. We are extremely happy with the level of customer service - Elyse went out of her way to notify us when the window came in and came in to work on her day off so we could come pick up the window. If we need another window we will definitely come back to Delco!

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Jonathon & Sheri Mcintosh


I would highly recommend this company, the final product was beyond my expectations, My new front door makes my house standout so happy thank you Delco Windows and doors. I will definitely use Delco Windows and doors again in the future thanks to Edan and the installers

Maria Reviewer Image



Existing door replacement is a delicate project. I am very satisfied with job well done by Ayal Jack and his installer. Highly professional team, they know their business well, easy to deal with, very accommodating. He guided us step by step to select the best fit for our purpose.

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Alfy Reviewer Image



I would highly recommend this company. They were very easy to deal with, accommodating and professional. The final product was beyond my expectations. The products completely transformed the front of my house and for sure increased its value and curb appeal. Thanks!

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Mi Reviewer Image



Happy experience from start to finish. Thank you to Edan for going out of his way to meet us late one evening and his helpful consultation in the showroom especially thank you to the extremely professional, clean and friendly crew of installers. Everything was as promised, the men arrived on time, their work was immaculate and complete, their craftsmanship beyond reproach.

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Esther Tobin

Replacement Windows

Delco offers windows for replacements, new builds and renovations. We offer:

  • vinyl, aluminum, or wood-hybrid material windows
  • Energy Star rated for maximum energy efficiency
  • clear or privacy glass
  • wide variety of colours and finishes, including custom colour matching
  • styles include: hungs, awnings, casement, slider, picture, European tilt and turn windows, and more!
  • retrofit or brick to brick installation available

Whatever you or your homeowners are looking for, Delco has a window for you. Full service Toronto window installation.


Delco Windows offers full-service vinyl window replacement in the Toronto area

Whether a new build or renovation, we can replace your old windows, or broken windows, with energy efficient windows that create a warm and comfortable home, while reducing your energy bill substantially. We offer:

  • Replacement vinyl windows
  • High-efficiency vinyl windows
  • EnergyStar certified windows
  • Gas-filled windows
  • All custom and standard size window frames
  • All standard and custom colors to fit your home preference

We do it all. Bathroom, bedroom and kitchen windows. We do the whole process too. Window selection, Window delivery and storage. We install the windows, and handle any necessary permits. Finished all with cleanup. The process begins with assessment, precise measuring, delivery, installation and follow-up service. We make sure your window replacement project is done right from start to finish.

If you are searching for the best window installation companies in Toronto, you'll find that Delco's full selection of vinyl replacement windows, other frame materials, professional window installation, and service are unmatched.





Delco Doors are safe and secure, and enhance the look, feel and value of your home. As both a door manufacturer and installer in Toronto and the GTA, we can handle the entire process of replacing or installing your new door.

If you are looking for door replacement, or need door installation for your new build or renovation, look to Delco. You need a team that can handle all the steps for replacing a door, from start to finish. Delco handles it all, and gives you peace-of-mind.

We offer entry, sliding, and storm doors in a variety of materials. Our entry door systems can be customized in many ways, such as:

  • Steel and fiberglass doors
  • Smooth or wood grain texture door faces
  • Painted or stained finish, with a wide selection of colours to choose from
  • 100% composite framing, perfect for the Canadian climate
  • Clear, decorative or privacy glass
  • Multipoint locking hardware, making your safety our priority
  • Transoms and sidelites, with panels or direct glaze
  • Different trip styles and sill colour options

Make an appointment to visit our showroom to view our wide variety of doors.


Award Winning Windows and Doors Toronto

Delco Windows and Doors is an award-winning window and door replacement company serving the entire Toronto area. Our company has been installing premium quality windows and doors to homeowners and contractors alike since 1989. Our highly-trained certified installers ensure your overall satisfaction with the quality of installation.

Whether you need replacement vinyl windows, high-efficiency vinyl windows, or entry door systems, you can expect that we will provide the best products and services always at affordable prices. Due to our long-term years of service and scale, we can offer the lowest prices in the GTA, and best selection of windows and doors Toronto service. Installing vinyl windows, aluminum windows, hybrid windows, fiberglass doors, and steel doors is something we do with pride and commitment. When looking for Toronto windows replacement, count on professionals to get it done right.

When looking for a Toronto doors and windows company, remember that number of years in service is essential for finding the lowest prices, with top service and warranty. As a top rated Toronto window company, and HomeStars top rated window company Toronto for the past five years plus, Delco Windows and Doors offers full service, from design, window selection, removal of old windows and doors, install and followup service. Toronto windows replacement customers come back again and again to Delco for their home improvement window replacement projects.

Our special windows direct program means that you get your windows and doors directly through us. No warhouses, distributors or big box stores that charge extra. Factory-direct windows from the source. One of the select windows manufacturers Toronto. 

If you're looking for doors, whether front entry doors, energy-efficient replacement doors, patio doors, sliding doors and more, Delco is a select door company Toronto, so you can have peace of mind, knowing you have the best prices, with 30+ years of workmanship experience for your door installation.  Delco knows Toronto, and has been part of the local community since its founding. Delco give customers the assurance of working with local GTA community . . . no national chains that outsource to out-of-area installers. Quality, local reputation and craftsmanship, and the best prices.

If you are searching for the best window replacement companies in Toronto, look through our full selection of vinyl replacement windows, energy-efficient doors, storm windows and doors, and more. We are one of the top Toronto doors and windows company. Full service, from showroom sales to installation, to warranty and service.

If you need window and door installation, trust the local experts who have been specializing in windows and doors for 30+ years. Whether you want to upgrade your style, increase energy efficiency, or improve ventilation and views, Delco can help you from start to finish. Toronto's window and door professionals. Toronto windows replacement all starts with hiring the right local experts for your home. 

Check out our full selection of the best windows and doors Toronto has. Full service, from planning, measure, design, permits, install, cleanup and post-installation service.



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The Top Questions Asked

By serving the Toronto area for over 30 years, we have nearly seen it all. Below are some of the top questions asked by homeowners about window and door installation. We hope these will give you assurance windows replacement and door replacement quality. We also have additional Frequently Asked Questions here


What time of year is best for Toronto windows replacement?

We replace windows and doors year-round. Typically early spring through early summer is when most homeowners start researching Toronto windows replacement options. Yet, we offer additionl bundling discounts and season savings during off-season replacement as well. After consultation and quote and receiving of the unit, we can replace any window or door in less than an hour. Meaning that any time of year is good, sooner is better, regardless of the season. 


How do I know I am receiving the best replacement windows Toronto has available?

Canada energy efficiency guidelines ensure that today's replacement windows have a much better insulation factor than windows even 10 years old. Delco Windows and Doors only carries in stock windows manufactured right here in Canada, and designed for the highest energy efficiency for its class. For the best replacement windows Toronto requires for our climate, you can trust us to ensure your repalcement windows meet all codes and requirements. In fact, we offer the next higher level of energy savings, matching anyone's price in the area. You'll know you are receiving the best value.


What types of door window installation Toronto requires for government grants?

The short answer, is they must be Energy Star certified. This program is a government grant for windows doors and other energy efficiency elements to help reduce pollution, carbon emissions and combat climate change. It can apply for both the units and window installation Toronto and Ontario provincial governments allow. We have more details at our Canada Greener Homes Grant page


Do I need to find my own window installers?

Delco Windows and Doors is a full service door and window installation provider. We have our own team of window installers in-house. From measurement, design, purchase, delivery, removal of old windows, and installation, our window installers will handle it all. Our window installers are trained, and experienced for even the most difficult of window installation projects. Whether it is an entry door, or a large living room window, you can trust our team of window installers to get it done right, so you can enjoy your upgraded style and energy savings once completed. 


Frequently Asked Questions

If I already have a double-pane window, is that energy efficient?

Although double-pane is more significantly insulative than a single pane window, you should be aware of the age of your windows. If your double-pane windows are older than 20 years, chances are, the seals have cracked, and there may be leakage. Also, old double-pane windows were made in an era before many of the advanced technologies like gas fillings, vinyl frames, and low-conductive spacers were readily available. Many of our homeowners replace old double-pane windows with new ones, and see significant energy savings.

What is the difference between vinyl windows and other windows?

A vinyl window is actually referring to the frame, not the glass itself. Glass panes remain “made of glass”. But the frame, the material along the edges that holds the window together, can be made of many kinds of material, including aluminum, vinyl (pvc), and wood. Vinyl has a low conductive property, which means that the temperature between outside and inside stay apart longer, and don’t pass through as easily as metal. This is the energy efficiency we refer to from vinyl windows.

Are windows from Canada different than windows from the USA?

What is most important to look for is the Energy Star Certified in Canada label. It is similar to the ratings system in the States; but for the Canadian market. Because Canada’s overall climate is trends towards colder winters, it is essential to have high-efficiency windows. Delco Windows & Doors carries a full line of certified high-efficiency windows.

What are gas-filled windows?

When a window is filled with gas, Argon, (and sometimes krypton and xenon) is injected into the space between the glass panes of the window. This forms a denser barrier, functioning much like water, that slows down the temperature transfer between the inside and outside of a window. Gas-filled windows are one of many features that help create energy efficiency. Older windows in your home likely do not have this gas-filled feature, as it a more recent development over the past 20 years.

Do I need to get a permit to install a new window?

A permit is required in the event that you will be making structural or material changes to your house as part of the installation. In other words if you are creating new openings, or increasing the size of your windows, a permit is necessary.

I want to make a larger window than what is already there. Can I do that?

In some cases, yes. However, it all depends on the load-bearing nature of the studs in your wall near the vertical sides (jambs) of your window. If they are transferring significant structural load around your window, it is not wise to adjust the width. Often times, the height of a window, however, is easier to change; still providing you a larger, more spacious, window.

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