The Best Windows & Doors in Whitby

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The Best Windows & Doors in Whitby

Mike Morris, Our Local Representative - Clera Windows + Doors

Mike Morris

Our local representative has been serving Weston Downs, Woodbridge and surrounding areas for over 5 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Weston Downs, Woodbridge

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 Weston Downs, Woodbridge and surrounding areas for over 5 years!


Contact us for more information and about a free quote!

Contact Us

Our Local Clera Branch Serves Weston Downs, Woodbridge

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 Whitby

We believe that Clera offers the best doors and windows in Whitby and have been doing so for nearly forty years. This is not just about the quality of the replacement windows and doors but also the service we offer to our customers. Our reputation has been founded on attention to detail and listening to our customers in Whitby and beyond. You might think made to measure is too expensive but look again, Clera can offer unbeatable value to go alongside our top quality merchandise and friendly professional customer service.

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Clera Windows and Doors provide the highest quality products and installation to homeowners in Whitby and surrounding areas. Our industry experience has built trust with the residents of Whitby, and our superior replacement windows and doors offer a variety of benefits to suit your needs. Founded in 1978, Clera Windows and Doors has prided itself on the values of a family-run business. We value trust, quality and excellence in our work and we’re dedicated to providing residents of Whitby with the best quality and service for their window and door replacements.

All our replacement windows and doors in Whitby are made in Ontario at Clera’s own factory. Enjoy styling your own look with design and fit that only comes with made to measure. Clera controls the whole process from the drawing board to installation and because we don’t sell anyone else’s products, we can keep our costs competitive. We have so much faith in our joinery that every unit we install comes with a guarantee for life and that includes both repairs and parts.

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.

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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!)

Whitby’s Leading Replacement Windows & Doors

With bespoke, tailor-made furniture you can ensure the very best fit and exactly what you want in terms of style. Our experienced team can gently steer you along the path with all the information and advice you need. Over forty years, Clera has built up an impressive catalogue of products. Take a look at the properties of all our satisfied customers in Whitby, no two installations are the same. Clera’s range has depth and real variety.

Replacement windows and doors in Whitby are a big decision but have confidence in Clera to transform your home. Watch your property value rise and your heating bills tumble once Clera has worked their magic. A great fit and the most modern of low maintenance finishes mean that your new windows and doors will look as good as new years after installation. Enjoy warmth, security and just a little more peace and quiet with Clera.

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

Choose from a variety of glass types and grilles and pick a colour from Clera’s extensive menu. If you can’t find what you want then we can personalise a colour scheme to fit in with your decor. All of Clera’s paints have fade-resistant technology so no matter what the Canadian weather throws at them, they will retain their colour and sheen.

Our reputation in Whitby was built on the satisfaction of our customers. Clera Windows and Doors is an industry leader in Canada, and we provide the highest-quality manufacturing and installation. With almost 40 years of experience, we are confident that our products and workmanship are unparalleled. As well, our installers are trained in our own program which is overseen by the Canadian Standards Association.

We have over 40 Ontario locations, and we serve the individual needs of each homeowner. Whitby homes have experienced the many benefits our products offer, as well as enhanced curb appeal. We work with you to find the best fit for your home.

Whether you’re looking to completely renovate your home, or provide some smaller-scale updates, we provide you with the highest-quality windows and doors to suit your specifications. Our products are beautifully crafted, enduring and versatile and we are among Canada’s premier manufacturers and installers of replacement vinyl windows and doors in Whitby.

Clera’s website has a great new feature which is a design tool to allow you to preview how some of the styles and colours might look on your home. Pick your glass, grille and colour and then let the computer do the rest. Browse our range of doors, a door for all seasons and all made from tough stainless steel or fibreglass.

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

Vinyl Windows & Doors

Clera has concluded that vinyl is the very best choice for replacement windows and doors because it has so many advantages over other options such as wood. Vinyl is incredibly tough and durable and this means as well as keeping you toasty warm in winter, it also withstands the ravages of the weather. Despite this resilience, vinyl is incredibly competitively priced.

Vinyl is lightweight so no-one is going to have to struggle with heavy, cumbersome doors and window units in Whitby. The finish is ridiculously tough and it just doesn’t’ stop looking good regardless of what you throw at it. This means low maintenance for you too. Vinyl has a great R-value which reflects its ability to insulate. Loved by environmentalists, you will love it too as you watch your heating bills fall. Vinyl comes in a wide range of widths so you won’t be left out in the cold if your measurements are outside the norm. Colour choices are epic.

Clera employs its own team of fitters to install your windows and doors. Trained the Clera way, they are fully in tune with our core values and each unit is installed in line with the guidelines set out by the Canadian Standards Association. Check back with some of our satisfied customers and look at our handiwork at properties around Whitby. Ramp up the value of your home, revitalise its look and do your bit for both the environment and your bank account, all at the same time.

Our windows are engineered to be energy efficient, saving you money on heating and cooling costs for the changing Whitby seasons. Additionally, our windows in Whitby are easy to clean and provide increased security and privacy, and block out any unwanted outside noise.

Our selection of glass makes it easy to customize your replacement windows. We offer speciality glass, different glazes and a variety of grill options to suit your style. We provide customizable colour options and our advanced colour retention technology ensure your window’s colour never fades. Also, we offer a lifetime warranty on all of our vinyl window hardware, components and glass, so you can have peace of mind knowing your windows are of the highest-quality.

Extensive Range Of Vinyl Windows - Clera Windows + Doors
Serving Aylmer For Over 40 Years - Clera Windows + Doors

Serving Whitby For Over 40 Years

Clera has worked hard to earn such an enviable reputation in Whitby and don’t intend losing it any day soon. Our trade is to supply quality made to measure replacement windows and doors whilst offering the best customer service.

Enjoy the Clera heritage, you are in the best hands possible. Our family business thrives on the values in place when it first opened all those years ago in 1978 – hard work, integrity and pride in making the best products for our customers. A big part of our commitment is offering our products at a fair price. You won’t find any better in Whitby.

You might wonder how your new windows and doors are going to withstand the might of a Canadian winter. That is naturally on everyone’s mind as living in Whitby, you know how harsh the weather can be. All our units are inspected before they leave the factory in Ontario. Stay warm secure in the knowledge that your new windows and doors will look just as good when winter is over as when it began. Everything Clera produces is Energy Star Certified. Join Clera in the battle against climate change and do your bit for the environment.

Professional Installers - Clera Windows + Doors
Meet The Team - Clera Windows + Doors

Meet The Team At Clera Windows & Doors Whitby

Clera is the Number One choice for Whitby residents in the know. Try and find a company who can match our longevity and track record and, with so many happy customers. Remember, everything we sell is made to order in our own factory to offer you the most unbeatable quality and price. The evidence in Whitby is everywhere.

Take advantage of our no-obligation free estimate or why not stroll along to the Clera store in Whitby and see for yourself what we can offer you. Our experienced service team will be delighted to show you our range and answer your questions.

Enter or exit your home in style with our door collections in Whitby. We offer many door styles including classic, design, prestige, fibreglass, sliding and garden, storm and shaker. Whether you’re looking for something classic, modern or simple, we have the best selection of doors for you to choose from. Our decorative options and colours ensure you can find a style that suits you and your home.

Our doors are Energy Star® approved and are built to withstand any weather that hits Whitby and surrounding areas. We’re confident our steel and fibreglass doors will be the best fit for your home.

Residents of Whitby turn to Clera Windows and Doors for their homes. If you’re looking for updated windows and doors for your Whitby home, we offer an entirely free estimate for your next project. Visit Clera Windows and Doors at our nearest Whitby location:

Best Options For Your Replacement Doors And Windows - Clera Windows + Doors