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FeaturedWindow Installers in Hamilton, Ontario

NTI Windows & Doors

Top Spot in Hamilton Today 5.00 (31 reviews)(905) 512-2398

NTI Windows & Doors

NTI Windows & Doors is a Hamilton-based window replacement and door installation company serving homeowners across Southern Ontario. Its window work includes full-frame and retrofit replacements, and it specializes in triple-pane windows.

Business Highlights
  • NTI is Canadian-owned and operated.
  • The team has over 75 years of combined window-and-door industry experience.
  • NTI backs every project with a 25-year warranty covering product, installation and support.

Service Area

Hamilton, Burlington, Toronto, and the Greater Toronto Area.

Featured Local Business

NTI Windows & Doors is one of 12 window installers ProsGrade lists in Hamilton, Ontario.

Featured
Featured on ProsGrade
Listing details

4 services listed, including Windows, Entry doors and Patio doors. Open Monday to Saturday. Rated 5.0 from 31 reviews.

  • Verified listing details
  • Service information
  • Customer review signals
  • Photo gallery
  • Public contact information
  • Published local profile

How This Business Compares

How NTI Windows & Doors compares with the other 11 window installers on ProsGrade in Hamilton, using public Google ratings and review counts.

  • Ranks in the top quarter of the 12 Hamilton window installers on ProsGrade by Google rating and review volume.
  • Rated 5.0 on Google, at or above the 4.8 average of other Hamilton window installers on ProsGrade.
  • One of 7 Hamilton window installers on ProsGrade rated 4.7 or higher from at least 10 reviews.

Services Covered

4 services
  • WindowsENERGY STAR certified; casement, slider, hung, awning, bay/bow, tilt-and-turn and custom configurations.
  • Entry doorsCustom-built with Canadian materials; steel or fiberglass options.
  • Patio doors2-, 3- or 4-panel configurations; custom sizes.
  • Garage doorsA range of styles and insulation levels.

Reviews

What customers say

Several customers appreciated the helpful guidance and clear answers, and more than one praised the installation work. One customer described NTI as “never pushy”; Jason is credited with diligent, efficient work, and another customer says the windows open smoothly.

Customer Reviews

Terry Campbell

We needed new windows for our home as we noticed condensation and the beginnings of mildew and mold on some of the windowsills. Our deep dive into companies showed us the horror stories some people experienced which we wanted to avoid at all costs. Knowing this is one of the most expensive investments for our home we needed a company that was trust worthy. Now the hardest part…finding said honest company who had integrity and wasn’t in it just for the money. We set up some appointments …they didn't work out for various reasons: no timely follow up & rush tactics.. Incoming… Nidal from NTI Windows. The buck stopped with him & thankfully Stouffville was in their serviceable area. Arrival was timely on the appointed day and a demonstration was given with their actual windows explaining why we should choose their company for our windows over other competitors. We were quick to recognize that Nidal doesn’t operate non-ethically, but upholds honest values and integrity in business and simply put, he is a decent person overall, (which is harder to come along in business ventures than you would think). We had so many questions and Nidal answered each and every one of them gracefully and with the utmost patience, guiding us to make the best decisions for our home. We decided upon triple pane windows and whew, what an incredible difference + they look incredible! Nidal helped us curate the best design explaining the window split options, while making sense of which direction the windows should open - this matters a lot for the efficiency and daily use-ability. He provided crucial feedback that helped us cement our choices with no regrets. Nidal’s pricing was fair and competitive while not compromising on great products and service. There are no longer any drafts in our home; our heating bill has decreased significantly and we feel so secure and comfortable in our home. Our front doors needed to be replaced and again Nidal provided very competitive pricing for the products they deliver and our front doors were exactly as pictured - we are very pleased. Nidal is passionate & enthusiastic about what he does and takes great pride in the work of his team which translates to not only the workmanship but the installation. Great windows without a great installer/ install - are just great windows. They must be installed correctly. A definite concern we had generally speaking, not specific to NTI, was that after the contract was signed and job completed; we feared there would be no ownership for any issues that popped up, or after install, the expected disappearing act where you have to rundown the business to get the resolution your looking for- not here, & thankfully not our experience with NTI windows. Did the job go off with a hitch?.. Due to the magnitude of the job, it did not go completely as expected in every aspect - however we afforded grace as this is to be anticipated with such a large job and when customer service & follow up really matters. We had some minor issues which the NTI team addressed and resolved immediately. Honestly speaking, do your research and take your time securing the right business for your needs. I’ve simply provided this review to help save you some time as I wished I had this kind of review when I was searching to help us make the right decision in selecting and securing the right company. Windows are the eyes of your home and they make a huge impact and statement not only for curb appeal... they enrich the home for living comfortably in secure cozy warmth in the winter and a lovely cool space in the summer months. If you’re looking to make an investment for your home by upgrading your windows & doors, please look no further - NTI Windows is it! Overall and lastly, we are so very pleased with the end results- no issues thus far and our home looks fabulously renewed. Thank you Nidal & your NTI Windows team! *pls note there were no promotions, incentives or specials offers provided for my honest review. Thank you
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Red Wings

We had a great experience with NTI from start to finish. From the very first meeting, they were professional, knowledgeable, and never pushy. In fact, another company we spoke with tried to pressure us into a “same-day, no-tax” deal, which immediately felt uncomfortable. NTI was the complete opposite — no pressure, no gimmicks, just honest information and time to make the right decision. They answered all our questions clearly, walked us through our options, and made the whole process easy and stress-free. That level of professionalism and transparency is exactly why we chose NTI, and we’re very glad we did. Highly recommend them to anyone looking for quality windows and a company you can actually trust.
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Sam Kontos

We couldn't be happier with the service and representation of NTI Windows and Doors. Nidal was an amazing help giving us assistance with our needs, gave us recommendations of what to do and what not to do, and was always available when we needed him for a call, or email. Jason was also an amazing installer and did work diligently, efficiently, and at an extremely high standard. Sharon is also amazing in the accounting department! We really couldn't be happier and thank everyone at NTI for all of their hard work. I'd recommend them to anyone that is looking for new windows and doors in your home.
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Michael Domingo

We worked with Nidal and the NTI team to update the windows in our house and our front door. We knew that we needed to work with a team that could adapt to any challenges posed by an older Toronto home. Harris is a master craftsman and installer and brought the highest standard of integrity and attention to detail to the project. We’re happy to say that we are very pleased with the outcome from an aesthetic perspective and with the peace of mind that the job was done right. We’ve received numerous compliments about the update and transformation. We gladly recommend NTI to any homeowners looking to refresh their windows and would definitely work with them again in the future!
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Michelle Bedard-Hakim

I had a great experience working with Nidal and NTI Windows and Doors. We had 3 windows and 1 door replaced and they look great! The windows open so smoothly and they are exactly what we wanted. Communication with Nidal was excellent and the work was done very well without any mess left behind. We got 3 quotes and NTI was the most affordable option. We will definitely use NTI again when we have to replace 2 more exterior doors in the next couple of years.
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Frequently Asked Questions

How does NTI's process start?

NTI starts with an in-home visit to review windows and doors, discuss goals and explain options. After the details are confirmed, the products are custom ordered.

How long does installation usually take?

Most projects take 1 to 3 days, depending on the number of windows and doors being replaced.

Does NTI take on one-window jobs?

Yes. NTI takes projects of every size, including a one-window replacement.

Can NTI help explain rebate programs?

During active rebate periods, NTI can help homeowners understand basic requirements and what may apply to a window or door project.