The Best Windows & Doors in Oshawa

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The Best Windows & Doors in Oshawa

Mike Morris, Our Local Representative - Clera Windows + Doors

Mike Morris

Our local representative has been serving Oshawa and surrounding areas for over 5 Years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Oshawa

As the manufacturers and installers of all our windows and doors, we stand behind our work.

Mike Morris, Our Local Representative - Clera Windows + Doors

Mike Morris

Our local representative has been serving Oshawa and surrounding areas for over 5 Years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Oshawa

As the manufacturers and installers of all our windows and doors, we stand behind our work.

Clera Windows + Doors


Toll Free: 1-844-738-7936
Phone: 1-844-738-7936
Fax: 905-738-0586


Clera Windows + Doors

Toll Free: 1-905-738-1870
Phone: 1-905-738-1870
Fax: 905-738-0586


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Best Windows And Doors - Clera Windows + Doors

Get over

$325 per Window

in FREE factory upgrades

With our wide range of ENERGY STAR products, you can be sure to save big on your next dream project!

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Limited Time Offer To Upgrade Your Home - Clera Windows + Doors

The Best Windows & Doors in Oshawa

If you are looking to replace old or dated windows and doors then look no further than Clera, your quality family business in Oshawa with decades of experience and know-how. There isn’t much Clera don’t know about making windows and doors and we have plenty of satisfied customers in Oshawa.

Clera’s is a family business built on hard work and quality merchandise and we have established an enviable reputation in this field for the style and durability of our products. We make our replacement windows and doors ourselves in our own factory in Ontario so we really can guarantee the quality, giving you the style and craftsmanship which the name Clera has come to stand for. Take a look around you in Oshawa, there are plenty of happy customers showcasing our fabulous products.

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If you live in Oshawa and need new windows or doors for your home or office, your best choice for great quality and attentive service is Clera Windows. Manufacturing a huge variety of energy efficient windows and doors in Oshawa, we can even custom design the perfect solution for your needs. Reduce both your monthly heating and cooling costs, improve the aesthetics of your home, and increase value and curb appeal with our exceptional designs.

As the automotive capital of the country, it’s important for the residents and business owners of Oshawa to do their part in protecting the environment and one of the easiest ways to do that is to choose EnergyStar certified windows and doors in Oshawa for your home or office.

Because we do not buy in stock at Clera, we can literally make whatever you want. We can also guarantee the quality as we control every step of the production process. Rely on our craftsmanship whilst enjoying the luxury of styling your own design and bring your home to life. You will have to look twice at our prices because they are so competitive but this is because we don’t need to pass on any supplier costs to you the customer. Relax in the warm glow of a lifetime warranty for your replacement windows and doors in Oshawa.

Customized Windows & Doors In Alliston - Clera Windows + Doors
Invest In Your Home Today - Clera Windows + Doors

Why Choose Clera

Why take a chance with other window or door companies that purchase their products from another supplier, only to resell them to you for a higher cost?

Clera Windows + Doors is one of Canada’s largest, oldest, most dependable and reputable vinyl window manufacturers in Ontario. We fully manage and take care of your door and window replacement project from start to finish, ensuring every stage of your window or door project meets our lofty standards of craftsmanship.

Why are we Ontario’s most awarded window and door company?

The Clera Care Guarantee Logo

Over 45 Years of Experience

With over 45 years of experience, we have earned a reputation as one of Canada's leading window and door manufacturers and installers.

Certified Technicians Icon

Certified Technicians

You can trust our team of factory trained technicians to install your new windows perfectly—our A+ BBB rating is no accident!

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Serving Ontario With over 40 Branches

We have over 40 branches across Ontario, which means that we're always close by when you need us.

Non-prorated Lifetime Warranty Icon

Non-prorated Lifetime Warranty

Whenever anything goes wrong with your windows, we'll take care of it for you—no questions asked.

Energy Star Icon

ENERGY STAR® Certified

Our hung windows meet Canada's strict energy-efficiency standards. A window from Clera is not only high-quality and durable, but also energy-efficient.

Reasons to Love
our Products

Clera Windows + Doors is a reputable vinyl window manufacturer in Ontario with a history of dependable and high-quality products. Our superior materials and cutting-edge technology ensure durability, energy efficiency, and style. We offer customizable styles and colors, as well as superior security features and noise reduction technology to provide the best possible product attributes for your home.

Our team manages every stage of your replacement project, from start to finish. We work closely with you to understand your specific needs and preferences, and use our extensive experience and knowledge to deliver a solution that exceeds your expectations. Trust Clera Windows + Doors for exceptional service and expertise for your home renovation needs.

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Energy Star Icon

Energy Star Approved

Effortless Operation Icon

Modern, Contemporary Design with more glass, and less frame

Better Home Security Icon

Better home security

Noise Reduction Icon

A quieter home; improved noise reduction from the outdoors

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No Maintenance Icon

No maintenance: vinyl windows are virtually maintenance-free

Pilkington Low-e Glass Technology Icon

Pilkington Low-E Glass Technology, engineered specifically for Canadian climates

Structural Integrity Icon

Wet-glazed frames and sashes on all windows; the ultimate in protection against water and wind infiltration, with added structural integrity

Improved Ventilation Icon

Triple-fin weatherstripping with built-in anti-microbial properties, meaning no mould and better air quality

Pure Virgin UPVC Icon

100% pure virgin UPVC, providing protection from fading

Exceptional Durability Icon

Stronger hardware and structural integrity thanks to integrating galvanized steel (allows for larger, more spectacular views!)

Oshawa’s Leading Replacement Windows & Doors

Found the right replacement doors and windows but not in the size that you want? Sourced the perfect style but can’t get the fit for your home? Why not consider made to measure joinery, it is not nearly as expensive as you might think with Clera. Let us help you find the right style with the benefit of our expertise and experience. Everything is handmade and finished in our factory and fitted by our team of professional installers. Clera can bring to life the look that you want for your Oshawa home.

Longevity is a big concern for our customers particularly with the winter weather these doors and windows in Oshawa have to withstand. Specially engineered color retention means your windows and doors will never look weathered and they are so easy to keep clean making your life easier. Just the perfect fit for your home, our installers will ensure you stay warm and cozy whilst shaving dollars off your energy bills.

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Window & Door Assemblers - Clera Windows + Doors
Best Vinyl‍ End Vent Slider Windows  - Clera Windows + Doors

Clera is renowned for its security with quality windows and door locks to keep you safe and secure without compromising on design and style. We also offer a special glass to minimize noise if you live in a particularly noisy neighborhood or one where there is a lot of traffic.
Once you have chosen the style you want, select your glass, grills, and color from our comprehensive portfolio. Stylistically we can produce almost any design of windows in Oshawa, whatever your preference.

At Clera Windows & Doors Oshawa, we manufacture and install just about any style of window you can think of from awnings and casements to single or double hung or sliders, you won’t find a bigger selection of styles, colors, and designs anywhere. And if you can’t find what you are looking for, our factories can easily create a unique custom design tailored to your extra needs and desires. From size to style, we’ll tailor any window to suit your space! Our lifetime warranty and factory-trained expert installation teams make Clera the clear choice for superior windows in Oshawa!

If you are unsure what you would like or which style would suit your home, then why not try out our software design program which you can find on the Clera website. So simple to use, it will allow you to visually see what the different window styles might look like on your home. Take a peek at our great array of doors with masses of different types and styles made from either fiberglass or stainless steel.

Vinyl Windows & Doors

Vinyl is in our experience the best choice for replacement windows and doors in Oshawa. It is lightweight and easy to both fit and operate, it has a superb finish which doesn’t weather and it is incredibly economically priced. Clera knows from years of installing windows and doors that vinyl will continue to deliver month in month out whatever the weather. Vinyl is low maintenance so you won’t have to work hard to keep that ‘new window’ look.

Vinyl scores highly on R-value which to you the customer means it is a great insulator and will help to maintain a consistently warm environment in your home and save you money to boot. So often, insulation has to be put ahead of design and style but with Clera replacement windows and doors, you can have both. There are plenty of Oshawa homes which feature Clera replacement windows and doors and many happy customers.

All our products are fitted in line with the protocols laid down by the Canadian Standards Association. Clera window and doors tick every box, protecting your bank balance, stylishly standing out from the crowd whilst all the while quietly getting on with the job of keeping your home warm and draught free.

When your home or business needs a new door, it can be a difficult decision. With so many options on the market, where do you start? For many reasons, starting at Clera Windows and Doors has proved to be the best choice for residents of Oshawa! Our expert staff can help you find just the right product to match your décor, keep your property secure, and lower heating and cooling costs. Only the very best products ever leave our factory floor, so you can be sure your new door is of the highest possible quality.

Vinyl Windows & Doors - Clera Windows + Doors
Bay & Bow Windows - Clera Windows + Doors

Serving Oshawa For Over 40 Years

Clera has a legacy of satisfied customers in Oshawa, we have been a key member of the home improvement sector in Oshawa for nearly forty years. That’s because our formula is just unbeatable – your design choice matched with our experience and professionalism and installed by a crack team of fitters.

We still maintain the same ethos that we did when we got started in 1978. And that is to produce the best quality goods at a fair price and provide the ultimate in service to you the customer. Check out your local Clera outlet in Oshawa, we deliver and install anywhere.
We know a thing or two about Canadian winters and all over town, there are cozy homes snug and secure behind their Clera replacement windows and doors. Our quality is assured through rigorous testing of every product before it is allowed to leave the factory. As well as Clera’s lifetime warranty, all our replacement doors and windows are all Energy Star Certified.

Meet The Team At Clera Windows & Doors Oshawa

Clera’s statement is clear, quality items with no strings attached, let our satisfied customers convince you. Keep your home snug and warm with Clera happy in the knowledge that you are helping the planet and your bank balance all at the same time.

Get in touch for a free quote and check out our amazing prices. Contact us today and let our helpful team  guide you on styling and design. See for yourselves the quality of what we produce and let Clera transform your home.

Extensive Range Of Vinyl Windows - Clera Windows + Doors
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Professional Installers - Clera Windows + Doors
Meet The Team - Clera Windows + Doors
Best Options For Your Replacement Doors And Windows - Clera Windows + Doors