Made in Canada

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Made in Canada

4.7/5 HomeStars Rating

300K+ Happy Customers

45+ Years in Business

Non-Prorated Lifetime Warranty

ENERGY STAR Certified Products

Tim Mohr

Our local representative has been serving Trenton and surrounding areas for many years!

1-844-738-7936

Our Local Clera Branch Serves Belleville

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

Plus Get $600 per Window in Free Upgrades

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

Instant FREE Upgrade to Brilliance Line

Don’t pay for 18 months from Installation Date

Low Monthly Payments Available

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Hung Window, Gallery Image - Clera Windows + Doors

Single & Double Hung Windows

Easy-clean tilt function – Easily clean exterior glass from inside your home
Space-saving design – Perfect for narrower lots and condo spaces‍
Ultimate ventilation control – Adjust top, bottom, or both sashes to direct airflow

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Awning Windows

Superior weather seals – Triple-sealing system creates airtight weather barrier
Rain-or-shine ventilation – Top-hinged and opens outward to let air in, not water‍
Break-in resistant – Harder to force open thanks to secure multi-point locking

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End Vent Slider Windows

Unobstructed city views – Slim frames and large glass panels maximize glass area
Dual sliding sashes – Enjoy fresh air from both ends of the window‍
Effortless operation – Smooth rollers allow for seamless opening and closing

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Double & Single Slider Windows

Horizontal sliding – No swing-out clearance needed
Lift out sashes – Easily lift out panels for quick, hassle-free cleaning‍
Sleek design – Clean lines and a minimalist frame for a modern look

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Speciality Shaped Window, Gallery Image - Clera Windows + Doors

Specialty Windows

Custom shapes & sizes – Match door and window style to your home’s aesthetic
Light without limits – Brighten hard-to-fit spaces with precision-crafted glass‍
Energy-efficient materials – Tailor-made for insulation and UV protection

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Bay & Bow Windows

Dramatic visual impact – Create depth and dimension to any space
Extended interior space – Add a cozy nook or built-in bench
Panoramic light & views – Let the outside in with multi-panel layout

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Fixed or Picture Windows

Maintenance-free – No moving parts means no fuss, no wear
Zero energy leaks – Keep drafts and energy bills down‍
Frameless views – Large glass area for scenic backdrops and natural light

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Casement Windows

Maximum airflow – Hinged on the side and opens outward for full ventilation
Tight-locking design – Multi-point locking system keeps out drafts and intruders‍
Sleek crank handle – Easy to open in kitchens or behind furniture

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Steel Entry Doors

Reinforced steel construction – Built for strength, durability, and top-tier protection
Smooth, low-maintenance finish – Resists rust, dents, and wear
‍Energy smart – Foam-insulated core helps keep your heating bill in check

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Designing Your Fiberglass Door - Clera Windows And Doors

Fiberglass Doors

Environmentally friendly – Get the look of wood without harming the environment
Built for Canadian weather – Stands up to moisture, dents, and daily wear ‍
Superior insulation – Keep your home cozy no matter the weather

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Sliding Patio Doors & Garden Doors

Unlock natural light – Expansive glass panels brighten your space beautifully
Smooth-gliding operation – Glides open with ease and locks up tight‍
Extend your indoor living outside – Effortlessly blend your home with your patio or garden

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Storm Doors

Enhanced weather protection – Shield your entryway from rain, snow, and wind
Customization – Available in clear, ventilated, and decorative glass options‍
Secure ventilation – Keep insects out and fresh air in

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Hear What Clera
Customers Have to Say

With some of the highest ratings for customer satisfaction, it's clear why Clera is Ontario's most awarded window company!

9.2/10

on HomeStars

16x Homestars Winner

“I have nothing but good things to say about the services I have received from Clera. About 4 years ago I purchased a new front door from Clera. The salesperson was knowledgeable and understood what I was looking for...

Tammy Yazbeck

Muskoka

"Excellent! We have loved our dealings with Clera. Rod was amazing in listening and understanding the look we were trying to achieve and then suggesting products with the appropriate features...

Eric Tang

Ottawa

“We have received so many compliments on our doors. Mike and his crew (Mike and Anthony) are very friendly and professional...

Maria Novielli

Ontario

"We changed practically all the windows of our home and a sliding door and can't be more happy with the result.."

Roxalía Muñoz

Concord

"Both our sales rep, Greg, and installation team were courteous, skilled and acted professionally during the whole process. Will use Clera again for any future projects..."

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Frequently Asked Questions

Replacement Windows & Doors in Belleville

Name: Windows and Doors
Brand: Clera Windows + Doors
Rating: 4.6 (652 reviews)

Call Us

Replacement Windows & Doors in Belleville

Tim Mohr

Our local representative has been serving Trenton and surrounding areas for many years!

1-844-738-7936

Our Local Clera Branch Serves Belleville

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

Tim Mohr

Our local representative has been serving Trenton and surrounding areas for many years!

1-844-738-7936

Our Local Clera Branch Serves Belleville

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

Clera Windows + Doors

Belleville and Surrounding Areas

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

Sales: sales@clerawindows.com
Service: service@clerawindows.com

Clera Windows + Doors

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

Sales: sales@clerawindows.com
Service: service@clerawindows.com

Get a Quote

Best Windows And Doors - Clera Windows + Doors

Windows and Doors Belleville and Surrounding areas

With our huge inventory of finished windows and doors on hand and ready for quick installation, you are sure to find the right window or door for your Belleville home at Clera. We will even custom build almost any window or door you can imagine. Clera is a premier manufacturer/installer of Energy Star Products in Ontario as demonstrated by the fact that we have been selected as the top pick in our product category on HomeStars. Save money and increase the value of your home by buying Clera windows and doors.

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Customized Windows & Doors In Alliston - Clera Windows + Doors

Invest In Your Home Today - Clera Windows + Doors

Meet The Team At Clera Windows + Doors Belleville

Video Transcript:

Hi. My name is Ken Chaston. I’m here today with Clera Windows + Doors. I’ve been with the company for about nine (9) years now. I serve as district rep for the Belleville, Trenton, Prince Edward, and Hastings County.

I like being with Clera Windows + Doors. I’ve been here, like I said, for about nine (9) years now. It’s a family-owned organization. A Canadian manufacturer. They treat you really well here. They have one of the best warranty services in Canada. They’re a 100 percent, no-nonsense warranty. They serve quality products. It’s pretty easy to work with them. It’s a really good place to be.

I really enjoy being part of the Clera Windows + Doors team because we offer our customers a thorough home estimate at no cost. We support our customers in a way that makes the job easy.

Thank you for considering Clera Windows + Doors and I hope to hear from you soon.

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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?

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Learn More

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

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

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

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

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.
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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.

Energy Star Approved

Modern, Contemporary Design with more glass, and less frame

Better home security

A quieter home; improved noise reduction from the outdoors

No maintenance: vinyl windows are virtually maintenance-free

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

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

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

100% pure virgin UPVC, providing protection from fading

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

Hear What Clera
Customers Have to Say

With some of the highest ratings for customer satisfaction, it's clear why Clera is Ontario's most awarded window company!

9.2/10

on HomeStars

16x Homestars Winner

Tammy Yazbeck

Muskoka

"Excellent! We have loved our dealings with Clera. Rod was amazing in listening and understanding the look we were trying to achieve and then suggesting products with the appropriate features...

Eric Tang

Ottawa

“We have received so many compliments on our doors. Mike and his crew (Mike and Anthony) are very friendly and professional...

Maria Novielli

Ontario

"We changed practically all the windows of our home and a sliding door and can't be more happy with the result.."

Roxalía Muñoz

Concord

"Both our sales rep, Greg, and installation team were courteous, skilled and acted professionally during the whole process. Will use Clera again for any future projects..."

Greg Buczynski

Concord

Window & Door Assemblers - Clera Windows + Doors

Best Vinyl‍ End Vent Slider Windows - Clera Windows + Doors

Windows Belleville

At Clera Windows and Doors Belleville, we manufacture most sizes and styles of windows: From double/single hungs to double/single slider tilts to awnings to casements and even custom work, you will find no better source for beautiful and affordable replacement windows. The limited lifetime warranty that we offer with our products as well as our factory-trained, professional installation make Clera the obvious choice.

Doors Belleville

Whether you are looking for aluminum storm doors or high-security steel, every one of Clera’s doors are hand tested before they ever leave our factory. With a wide variety of styles and customization options, we are sure to have the perfect door for your home. You won’t find a better window and door manufacturer in all of Ontario: We guarantee it!