Clera Windows and Doors

Replacement Windows and Doors Manufacturer and Installer

We Manufacture. We Install. You Save!

In business since 1978, we're known for our quality replacement windows and doors and for our excellent customer service. We custom manufacture your vinyl windows and doors to your exact requirements and specifications in our factory in Vaughan, Ontario. Our certified quality program ensures that you get a top-notch installation from our own installers, many of whom have been with us for more than 20 years. With Clera Windows + Doors, there's no middle man, just straight talk and an honest approach.

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BEST of 2012 and 2013!

A HomeStars award highlights companies whose customers have sung their praises over the course of the year. Based on reviews from customers, the HomeStars sort algorithm defines the BEST of each market and industry every year.

Read our client reviews

How do you know if you are getting good value?

Find out why Clera Windows & Doors is one of Ontario's leading and most trusted replacement window and door manufacturer and installers. Listen to what our customers have to say…


Family-run since 1978, Clera Windows & Doors is widely regarded as one of Canada's premier manufacturers and installers of replacement vinyl windows and doors. From start to finish, we make your vinyl windows and doors to your exact specifications in our factory located in Vaughan, Ontario. See our exacting manufacturing process and listen to what some of our customers love about cutting out the middleman and saving money while getting the best quality.


Our installers are trained to the very highest industry standards, as Fenestration Installation Technicians, a program designed and overseen by the Canadian Standards Association. Not many companies in the industry can say that and it’s an added assurance to you that your windows and doors will be professionally installed. Our goal is to make your renovation project a complete success. From measuring to installation that makes sure we leave no mess, we also take great pride in our post-installation service.


Our warranty is among the best and most comprehensive in the industry – a no-nonsense, non pro-rated, fully transferable lifetime warranty on all vinyl window hardware, components and glass. You'll never have to pay for a new part for your Clera windows. Every customer receives our full, written factory lifetime warranty after completion of their installation. Now that's peace of mind. Listen to what our customers have to say. Some of them are repeat customers!

Replacing your windows is as easy as 1, 2, 3!

  1. Choose your style

    From modern to classic, from double hung to specialty shapes, Clera has a wide range of maintenance-free vinyl windows that are easy to clean and add curb appeal to your home.

  2. Choose your glass

    Every Clera vinyl window is engineered with Envirosealed™ glass for maximum energy efficiency. Select options that provide optimal energy savings, security and privacy.

  3. Choose your colour

    Our standard colour palette works with most homes, but we have an in-house custom paint facility that can match any colour you want. Using the most advanced colour retention technology there is, our colours will not fade away.

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