The Best Windows & Doors in Kitchener

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The Best Windows & Doors in Kitchener

Gerald McDougall, Service Representative - Clera Windows + Doors

Gerald McDougall

Our local representative has been serving Kitchener and surrounding areas for over 30 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Kitchener

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

Gerald McDougall, Service Representative - Clera Windows + Doors

Gerald McDougall

Our local representative has been serving Kitchener and surrounding areas for over 30 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Kitchener

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!

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

The Best Windows & Doors in Kitchener

Clera is a trusted dealer in Ontario and able to quickly manufacture your custom doors and windows. Voted as the favorite company in our industry on HomeStars, our commitment to our clients is well-recognized. With a significant inventory of finished windows and doors and the ability to fabricate a wide range of custom styles and colors, Clera Windows and Doors Kitchener is your best bet for superior products, expert installation, and hassle-free warranties.

Clera Windows & Doors have been in business for the past 41 years. Back in 1978, we embarked on a journey to provide superior quality furniture and replacement windows service to our customers. We are trained when it comes to making customized windows and doors for your beautiful homes. For the past four decades, we are the proud owner of the title ‘Champions of Customized Furniture,’ and hope to maintain this in the coming decades as we continue to provide the best options for replacement windows, in Ontario in general as well as in Kitchener in particular.

As we like to supply superior quality furniture to our customers, we do not purchase any of the products from third parties and sell those under our name. At Clera, we offer nothing but the best, which is why we offer a lifetime warranty with no hidden loopholes, guaranteeing your peace of mind. Our vinyl windows are also covered in this warranty, as are glass panels, and components as well. If for any reason you’re not completely satisfied with your purchase, all it takes is to give us a call and the issue will be resolved at no extra cost to you.

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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!)

Kitchener’s Leading Replacement Windows and Doors

Over at Clera Windows & Doors, we offer a wide range of windows and doors designs to choose from. You can select from the double or single hung tilt windows, end vent sliders, or casement windows, and there’s a lot more where that came from. You can go to our website and go through the various designs available for doors and windows—we not only offer the latest and most reliable models of doors and windows, but we even offer them in multiple colors that don’t fade with time.

We also offer a designer application on our website, which makes it possible to create the product that best fits your own personal taste in a matter of just a few clicks.

Are you living in a home your grandparents made, and still have the doors and windows installed way back then? Do your friends and relatives tell you—now and then, at least—to change them, or are the doors or windows damaged? No matter what the reason is, we’re proud to offer the latest designs and the best replacement windows for the residents of the Kitchener area.

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

Vinyl Windows and Doors

Clera Windows & Doors supplies the most distinctive furnishing products, made from the finest quality vinyl. We are the proud premier manufacturers and installers of vinyl doors and windows in Kitchener, offering a modern and diverse set of products that matches your taste. Each of our windows can be customized with many features and we sell pre-fabricated double- and single-hung slider and tilt windows as well as awnings and casements featuring Low-E Glass. Our stunning collection of designer styles come with a lifetime warranty and professional installation guaranteed to make your new windows last a lifetime.

The reason we choose vinyl for our products is, for one, it’s durable, and has the ability to withstand any type of weather condition and retains its shape as well. It’s sturdy, lightweight and comes with a longer lifespan than other materials. Lastly, it’s also economical, as it requires minimal maintenance. These factors save costs at every phase, from manufacturing through to installation.

Another reason why we over here at Clera love to use vinyl is the high R-value. This helps in bouncing The heat waves back, ensuring the room temperature does not increase. Being lightweight, you can conveniently carry them without much effort. Our vinyl product range is extensive, thus allowing our customers to choose as per their desire and requirement, at the same time not compromising quality for an affordable price.

For the residents of Kitchener, we have always been the first choice when it comes to replacement windows service in the Kitchener area. You get customized vinyl products that are made in line with your specifications, and our professional expert installers ensure the doors and windows are installed perfectly, without making any errors. Our installers are trained under a program designed by Clera Windows & Doors which meets the guidelines of the Canadian Standards Association. With more than 40 locations across Ontario that fit any type of neighborhood, homeowner, or home requirement, we’ll stand by you until you are satisfied with the product, and are always available whenever you need any assistance.

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

Serving Kitchener For Over 40 Years

For the past 41 years, Clera Windows and Doors have been providing the residents of Kitchener, Ontario with the best quality window and door replacement service. We strive to deliver nothing but the very best, and take pride in the commitments we make. Our technicians, craftsmen, and fitters are highly trained, ensuring that every product meets your specifications from the moment it toddles out of the factory until it fits snugly into your home.

To date, we have catered to more than 250,000 families, which is why our products are not only respected but also trusted, thanks to the consistent quality and compatibility we offer.

As winters are quite harsh in Canada, we make sure our products can withstand the severe temperature. The reason we ensure our products are ENERGYSTAR certified is so they meet the environmental standards, allowing us to contribute towards saving on large-scale energy levels.

Meet the Team at Clera Windows & Doors in Kitchener

Clera Windows and Doors is a family business that spans over four decades, where our focus has always been providing quality at affordable prices. Though manufacturing furniture is considered our trade, it’s also our passion. Every product designed at our manufacturing plants is designed to meet your demands, be it replacement windows service in the Kitchener area. We work 24/7 so that our clients will always get the best quality products, ensuring our windows and doors in Kitchener are not only affordable, but enhance the look of your home as well.

Give us the chance to show you why we are the best window and door manufacturer in Ontario and you will not be disappointed. We offer a vast selection of ready-to-go and customized products in styles ranging from steel security doors to glass sliding doors and everything in between. For the best door to match your décor and add value to your home or business, contact Clera today.

Extensive Range Of Vinyl Windows - Clera Windows + Doors
Serving Aylmer For Over 40 Years - Clera Windows + Doors
Professional Installers - Clera Windows + Doors
Meet The Team - Clera Windows + Doors
Best Options For Your Replacement Doors And Windows - Clera Windows + Doors