Why Us
The Window & Door Specialist understands and respects our customers concerns. So, we have prepared the following list to address these concerns.

Best Value
We believe in QUALITY and REASONABLE pricing. We offer competitive pricing along with guaranteed price matching as well as FREE in-home quoting.

Top Canadian Brand
We have an extensive selection of Windows, Entrance Doors, and Patio doors from the best Canadian manufacturers for every taste and budget. We carry products from suppliers that take pride in their craftsmanship, and we honor each and every product that is produced in Canada with the highest standards.

Excellent Reputation
We have over 35 years of window and door replacement experience and we hope to add you to our long list of satisfied customers. More than 15,000 satisfied clients, thousands of Windows, Doors, Porch Enclosures projects, and Hundreds of positive reviews everywhere such as HomeStars and Better Business Bureau.

Diverse Collection
Choose from decades of styles of Vinyl Windows, Luxury Wooden Windows, upgraded models of steel Doors and modern fiberglass doors, Aluminum patio doors, Porch Enclosure, Sunrooms. We will always have a proper product you need for your project.

Professional Installation
Your Exterior Door and Window replacement and Porch Enclosure, Sunroom installation projects will be done by our expert installers, quickly and clean. All old windows, doors, and our disposal will be removed. At The Window & Door Specialist Inc., we are proud of our ongoing customer service and superb installation.

Reliable After-Sale Service
Windows and doors are a big investment in your house. DO NOT fall into the trap of cheap products that are being sold by mobile temporary sellers. The problem will appear once you need support or spare parts but are not able to find them. Our office and showroom have been located in Richmond Hill for more than 20 years!

Fully Insured
Our staff and installers have WSIB insurance. In addition, our company also has its own liability insurance.

Flexible Payment Terms
No worries, we are flexible in payment based on our customer’s request, you can pay by visa, master card, cheque, or others.

Large Covering Area
Although our headquarter and main showroom is in Richmond Hill we cover all cities in Great Toronto Area (GTA) such as Aurora, Barrie, Bolton, Etobicoke, Maple & King, Markham, Mississauga, Newmarket, North York, Pickering, Richmond Hill, Scarborough, Thornhill, Toronto, Unionville, Vaughan, Woodbridge, and London.

Easy Financing – 0% Interest
We offer No Payments, No Interest for up to 12 months, or 0% Financing for up to 36 months and affordable monthly payments. Ask For Details!
Our Strong Business is Related to Our Happy and Loyal Clients!
EXCELLENT Based on 94 reviews Dr D2025-09-29Trustindex verifies that the original source of the review is Google. Over time and as the sun glares down on caulking, the caulking will crack. I’ve called the Window and Door Specialist as I had them come out for my patio door rollers a couple years ago. Jack (aka Super Jack) came out and same tech who replaced the door rollers removed the old caulking and replaced with new. One of the key things that Jack “went above and beyond”, he treated us with the utmost empathy and illustrated the window installation methodology. One window in particular came to mind and that was when the window was installed, a huge gap was evident and the installer of the windows applied a strip of sheet metal over and caulking on top. To Jack, this was not proper and he took it upon himself to add foam to the gap and creating a platform to properly insulate the crack and for the new caulking to be installed upon. Ali Bahrampour2025-09-05Trustindex verifies that the original source of the review is Google. Great working with this company. Mehrdad has a great attention to detail and explains everything thoroughly, making it easy to make informed decisions. On time and goes above and beyond — I’m very happy with the results. hamid eshghi2025-08-26Trustindex verifies that the original source of the review is Google. One of the worst business that I deal with in last 30 years. They are not trustworthy, I had a contract to change my windows, day before delivery date I paid full amount and next day they asked for delivery fee that was not in our contract $1500 delivery for $8000 windows they didn’t deliver my windows. The delivery didn’t happen unless week late and then one window was short that gets ready 2 weeks later. They are not honest on price details and time. As long as you paid them down payment or full payment, you have to run to get your job done. P. Kwan2025-07-25Trustindex verifies that the original source of the review is Google. We used Windows and Doors Specialist to install our garden door last year (2024), and front door this year. We are very satisfied with the quality of the works. Mehrdad gave good advice regarding various features for the doors, and answered our queries with patience. The doors were installed with great care and good workmanship thanks to Jack. Michael and Pearl alireza nouri2025-07-08Trustindex verifies that the original source of the review is Google. ⸻ I had a great experience with this company. Mr. Mehrdad was incredibly helpful from the very beginning — he patiently explained the entire process and guided me through applying for a government loan to help finance the window replacement. His clear communication and professionalism were a big reason I felt confident signing the contract. The installation was done with care, and the final result looks amazing — clean, precise, and beautifully finished. Everyone I dealt with was respectful and responsive. I highly recommend this company (and especially Mr. Mehrdad) to anyone considering window or door replacements! niloo javid2025-07-07Trustindex verifies that the original source of the review is Google. ⭐⭐⭐⭐⭐ Highly Recommend Window & Door Specialist! I couldn’t be happier with the service from Window & Door Specialist. They replaced all my old windows in just 3 days, and the team was fast, efficient, and professional throughout. The quality of the windows is excellent — solid construction, tight seals, and top-tier finish that have noticeably improved our home's insulation and feel. The installers were knowledgeable, tidy, and respectful of our space. If you want a quick turnaround, great product, and clean, professional installation, look no further than Window & Door Specialist amirali shemirani2025-07-05Trustindex verifies that the original source of the review is Google. We had a fantastic experience with Mehrdad and his team at The Window and Door Specialist. From the initial quote for windows and patio doors to the final installation, everything went smoothly. Mehrdad was the only contractor who guaranteed we could reuse our roller shades—and he delivered, saving us a lot of money. He gave us a great price and made several visits to ensure precise measurements and avoid any issues. Communication was always easy, and Mehrdad offered helpful suggestions on changing the layout of a few windows. We followed his advice, and we’re so glad we did—they look amazing. Dejan and the installation team were also outstanding. They worked efficiently—even on some of the hottest days of the year—and were professional, friendly, and respectful. The work took three days, and they left our home spotless at the end of each day. We’re incredibly happy with the quality of the windows and the overall experience. Highly recommended! jessica remington2025-05-20Trustindex verifies that the original source of the review is Google. Worked with window and door specialist on a few different projects and have nothing but good things to say about their customer service, quality of work and their expertise. We will continue to use them and highly recommend. Annette Hinrichs2025-05-19Trustindex verifies that the original source of the review is Google. Knowledgeable experienced staff , no sales pressure, really happy with the windows