Starting with Jim for the process of buying new windows to the final install with Cody and I forget the other person's name. sorry! Service was impeccable. Jim was not out to con me or sell me the next best thing. He gave me options on how I could save money. The guys came in and installed windows and cleaned the mess. Felt very comfortable with leaving them to do the work and go to the beach. I highly recommend them!!!!! Ad my dad would say "This company is Top Notch!!!" read more

We recently had windows and a sliding glass door installed by Definis and Sons. We highly recommend them. Rich, Junior and Senior were all part of the installation and we are very pleased with the outcome. The windows and door look great and we have already noticed a difference in noise level and temperature inside the house. read more

I highly recommend Junior and his team. Junior is very knowledgeable and answered all my questions and even some outside the scope of the install, which was very much appreciated. I will definitely use them for our patio door replacement and will request Junior specifically. read more

They were randomly closed when I stopped by the showroom the first time, but the second time, I was able to order. Very limited selection. One door option and one handle type. The process from order to installation was 7 weeks. I absolutely love my new door! It's beautiful & seems to be sturdy. The installation looks neat and professional. read more

Several weeks ago I had reach out to My Buddy Rich who works at Definis and Sons. He gave me a quote for a storm door and when it was ready a man named Cody came out and installed it. Cody was fast and polite and did a wonderful job installing the door and it's great quality too. I highly recommend this business for anyone in Philadelphia area! Thank you again. read more

Definis and Sons Window & Door - Windows Installation Near Me - Philadelphia, Pennsylvania

Junior and Cody replaced our aged sliding door in our walkout basement to our garden today. They completed the job in a few hours leaving the work area spotless. They were both professional, courteous and answered all my questions. Junior even found that the original sliding door (that was installed by the original builder years ago) was set too low to the ground which is why it was always getting wet over the years resulting in warping and rusting along the bottom. He fixed the issue on the spot raising the level of the new sliding door. My wife and I couldn't be happier with the work. This is a family owned and run business who take pride in their work. It was a pleasure dealing with every member of the family from the beginning to the end. I would highly recommend them to anyone who needs door or window installations. read more

From start to finish, my experience with Definis & Sons was seamless! Not only did they help with choosing the perfect replacement door, but they did an amazing job installing it. Larry and Mel arrived on time and got straight to work - they were courteous and professional. They took their time and made sure everything was perfect - the capping and the caulking around the door is beautifully done as well. They did a great job cleaning up when they were finished. I can't say enough positive things about my experience with Definis & Sons. read more

Definis and Sons Window & Door - Sliding glass door (with build in blinds) - Windows Installation Near Me - Philadelphia, Pennsylvania

Listen Yelpers! If you are in need of windows or doors for your home, please take my advice and go to Definis and Sons for your needs. Except for the months-long wait for my sliding glass door to come in which was due to supply chain issues, every aspect of working with the friendly staff at Definis was professionally handled. The sliding glass door was the third time I've purchased and used Definis for my needs. The first time was a complete window and door replacement in my first home in addition to having a new door placed through the bricks to the outdoor deck for easier access. The second time was a complete window and door replacement for my present home over 10 years ago. They also installed the largest garden window they sold at the time. One time there was an issue with the garden window, and when we called Definis they were out the next day to come and make a quick repair which thankfully was not serious, and also done at no cost. The sliding glass door was replaced at that time, but a mechanical issue that arose after many years of use resulted in a trip to Definis. They could not replace the door parts as the company was no longer in business but they offered the name and phone number of who they use to possibly fabricate a part. This did not work out so I needed to purchase a new door. The process was quick and easy with a down payment and then a long wait until it came in but I was warned about and expected it. Once it was in we got a call and we scheduled the installation. They came on time, put it in within two hours, and the sliding glass door with the integrated Venetian blinds looks great. For all of our major window and door projects for both my old and present homes, I trusted Definis and you should, too. I've never had any negatives about the company and their employees. They don't subcontract so you know who is coming to do the work. Every project was well worth the cost. Thank you, Definis and Sons. read more

If you're looking for new windows and doors look no further than Definis and Sons. We've had our sliding patio door for over a year now and, between two dogs and a toddler, it looks exactly like the day it was installed! We were very impressed with their professionalism, fast installation, and high quality product. You won't find better value for the cost. We love the blinds between the glass and the safety lock feature, which are both perfect when you have little ones at home. They're also a family run business which is another reason why we chose Definis and sons. We love our new door! read more

Definis and Sons Window & Door - Windows Installation Near Me - Philadelphia, Pennsylvania

Definis has installed windows and doors in my Parkwood house over the years. We have a vacation home in the Poconos and were told they would install the windows and doors there too. Rich, Rich, Larry and Junior installed 11 windows and 3 doors in the Poconos. They were all great. They were early and worked throughout the day. They cleaned up afterwards. I highly recommend Definis for your windows and doors. read more

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I've used Definis several times at my previous home. They just installed new windows and a patio door in my current home. Jim Jr and his crew were the best. They treated my home with respect and left it cleaner than when they arrived. They've made my renovation project go smooth. I can't say enough good things about them. I can't wait for them to do my doors next. They are the best. read more

Definis and Sons Window & Door - New windows - Windows Installation Near Me - Philadelphia, Pennsylvania

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Purchased windows poor quality. I have to hold top window up while holding bottom window down just to close. Installer stands over you wanting 5 star review read more

Last week had three doors installed by Definis and sons. The steel doors and the storm doors are of the highest quality. The installation was done by Mike who is a perfectionist. This purchase was an asset to our home. We highly recommend Definis and sons. read more

The windows and doors are a great product, but you can't beat the service provided by Jim (Junior) of Definis and Sons. He installed a new storm door for me and was careful, Professional, all work neat and clean. He replaced some of my older hardware on other doors and even went to my sister's house to help her. Her door was at least 10 years old and she thought she needed a new sweep. Junior adjusted her tread and left her smiling as well. No one follows up like Junior. He gets a 5 Star Rating from me. read more

I'd been putting off buying a new door for two years. Afraid of who would be contracted if I went with the big name home improvement stores. But with Definis you can feel like family. There show room is beautiful and no pressure of sales person following you around. I bought a modern door already painted in the color I wanted, white inside crimson outside. Beautifully complements my home, my castle! Thank you. read more

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Definis and Sons have top quality beautiful windows. They did my windows in my previous house many years ago and again in my new house, they stand the test of time. Junior and the crew were easy to talk to, excellent installers from start to finish, paying attention to the smallest of details, they did an amazing job and take major pride in their workmanship, very professional, I am an Extremely happy customer! read more

I needed to change my sliding glass doors to a regular door with storm door. I used Definis and Sons several years ago to install all windows in my house. But this job was a little more complicated. I had a sliding glass door and the stationary section was behind a custom build wood cover that could not be removed. Because of the complicated removal, I thought I needed a contractor. That was not the case. Junior came to my house with his crew and did a wonderful job. Junior was very careful and took his time to ensure the he did not destroy the wood cover. He was able to dislodge the 40 year old glass slider, pull it out from behind the wood cover, insulate behind the wood cover, build framing for the new door/storm door and capped and caulked everything. Junior was amazing. He was calm and professional and made sure the framing was even and secure in an uneven environment. The butterflies I had vanished because Junior knew what he was doing and did it well. After seeing Junior's perfectionism, I had all the confidence in the world regarding Junior's installation ability. I also had two windows installed at the same time, but the door installation was the real tell to his talent. The finished product came out better than I expected and is beautiful. I highly recommend Defines and Sons for the regular window/door installation but also for the more complicated jobs. read more

I would like to say Thank You to Definis and Son for installing 7 windows this morning. Junior & his crew were done within 2 hours. Junior & his crew did a wonderful job. They were very courteous & cleaned up very nicely. It did take 3months from order date till delivery. But honestly for the price & work they did, it was well worth it! I highly recommend Definis & Son for all your window & doors. You can't beat theor prices! We plan on using them again! Thank You again Junior & crew! read more

I had an excellent experience working with Definis & Sons! It was a pleasure to work with a family-owned business who excel at what they do. Everyone in the office was really helpful and friendly, and walked me through all the different options for my new entryway door - to be able to have real conversations with real experienced professionals was really a pleasure. Junior, who installed my door, was very friendly and punctual with excellent attention to detail - the door looks absolutely fantastic. After the door settled in place for 1-2 days, I noticed a very tiny adjustment that needed to be made, and with one quick phone call, Junior came back out a few days later to fix everything up perfectly! Overall, I was extremely impressed with Definis & Sons' attention to customer service. I will be going back to them for my future window & door needs! read more

We are beyond pleased that we chose Definis and Sons for our new windows (14) and our new Front and Back doors w/ Storm doors. Their sales people were great. The install crew took 2 days to install because we chose to do almost the entire house at once. They were prompt, friendly, tidy and professional in every way. Our doors are stunning and the storm doors are incredibly heavy/sturdy much more than any I have ever seen. I agree with the other reviewers that the wait time between order and installation is longer than most would like. Take my word that it is worth the wait. We noticed that the doors needed adjustment after they had left. A simple email and they were back out in days and our doors are perfect. That kind of customer care is lacking in most installers. This is a review from a real customer. read more

I'm a mostly absentee owner of a freestanding commercial building leased to a day care center. It was finally time to replace about 40 windows so I needed a reliable company that I could trust to do a good job without my supervision since I was in a different state so I contracted with Definis based on their great reputation. Junior came out and measured the windows and Jim gave me a fair price. Eight weeks later the windows were ready to be installed. Junior and his crew worked on weekends so they didn't have to inconvenience the day care operation. They did a GREAT job. The building looks great and will now be much warmer. Definis gave me a fair price, a great job and absolutely no hassle to me being absent. I highly recommend Definis. read more

In 2016, I purchased 2 steel security storm doors from this company. Excellent quality, great service and installation. Recently, I experienced an issue with the locking mechanism on one of the doors. I called the company and they were extremely responsive to my need for repair, 7 years later! Today, Junior visited my home and did an amazing job in fixing the issue with the door/lock in no time! I couldn't possibly be more pleased and I highly recommend this company. Junior was extremely accommodating and my repair experience was promptly and very satisfactorily resolved, at no charge! The door and it's lock mechanism is as good as new! read more

I had the pleasure of meeting today, October 21,2023, Junior, the Installation manager for Definis and Sons. He took measurements for six windows I will have replaced. A most congenial and professional individual. My front door could not be opened due to the dead bolt lock not operating. Junior had to enter my home from my garage door. He took the time to repair and adjust the door so that it once again opened properly. My wife and I were most grateful and appreciative that this individual did this for us ,even though he was at our home to only measure windows. In conclusion, I noted on the contract that the installation of the windows must be done by Junior only. read more

Fantastic! We purchased a new bay window from Definis. From start to finish everything was great. We met with Sandy and she showed us a few different options. She was very thorough and straight forward. The price of the window was also very comparable to other places. I feel like we got a great deal with a great warranty. The window does take a bit to make, roughly 6 weeks. Installation was today. The guys showed up on time as stated. All 3 men introduced themselves, they were nice and respectful. They did a great job with the install and cleaned up after. Not just sweeping but vacuuming. The customer service here is some of the best. If you need windows or doors this is the place to go. I will continue to support this small business. read more

Definis and Sons Window & Door - Windows Installation Near Me - Philadelphia, Pennsylvania

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The whole process from ordering to installation was great. The manufacturing time was a little longer than usual due to the pandemic, but it was worth the wait. The installation crew was professional, quick, and clean. The windows are beautiful and function so well. No more leaky windows that don't open! read more

Definis did a fantastic job on my replacement windows. I loved being able to go to a showroom to see the product I was buying. The price was very competitive compared to other quotes I got, and the warranty is so generous it tells me they have confidence in their product and work. I'm very happy with the quality of the windows and the installation. Junior and his helper worked fast, and were professional and friendly. I would absolutely hire Definis for more work! read more

Definis and Sons Window & Door - New windows brighten up the house! - Windows Installation Near Me - Philadelphia, Pennsylvania

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Update: After getting our Windows by Definis installed in October, we knew whenever we planned to get a new outside (storm) door, we'd go with them again. We stopped in the showroom about 7-8 weeks ago "just to look" (as we tend to say) but ended up ordering a door a day later...we did the same with the windows!The old door was a mess. We knew we wanted full glass (so does our cat!). It was installed today by Mike. He was great. It was done in a few hours. The capping all around was done. The old unusable doorbell wiring is now hidden and the door looks beautiful! We couldn't be happier with Definis, their staff & their products. If you're looking for windows, storm doors, inside doors or sliding doors of any kind, go with Definis. You won't be disappointed! read more

Definis and Sons Window & Door - Exterior side of beautiful new storm door - Windows Installation Near Me - Philadelphia, Pennsylvania

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These guys put in 6 windows in my south philly crooked house. They were polite, punctual, cleaned up after themselves, hard working, and super communicative. I would highly recommend them! We've had so much trouble finding good workers that these guys were a breathe of fresh air! (One window was put in forward when the windows beside it were farther back, so just pay attention if you're OCD like me, but thats on me and could have just been where it fit.) read more

I filled out a online form to schedule an appointment for 10 replacement windows to my house. One window to be a triple slider window and a bay window. I received an email two days later to take a picture of my window and they would send me price. Can anybody imagine dealing with a company that wouldn't call you back. Does not come to your house to show you samples or have option conversations. This company is straight up crazy. They forget MY MONEY IS GOOD ANYWHERE ! I did not bother to answer the email. read more

We love the windows and shutters that were recently installed by Definis. Installation Installation was very efficient and friendly. We have received great feedback from our neighbors about the appearance of the windows and shutters and we believe that some of our neighbors will reach out to Definis for windows. read more

This company is great. I had a major window problem that they helped me solve. Honest & truthful people. Junior who came out to do the work was absolutely wonderful. Did a perfect job in helping me solve my problem. Highly recommend this company. -Dale Baxter read more

Great prices and GREAT service. Junior installed 3 windows yesterday and he was quick, efficient and very friendly. Thank you, I love my new windows! read more

The process of getting my new doors ordered was smooth & easy. Jim made the experience very easy, he treated me like i was family. His customer service was exceptional. Can't wait for my new doors . The selection was great . read more

Everything about our experience with this company has been fantastic. We just moved and had all of our doors and windows replaced by Definis. The workmanship and customer service is outstanding. The windows and doors are functioning perfectly (the windows glide up and down like they are made of air) and the home is 100% more comfortable. This is the second time I've used Definis (the first time was only for a door) and would absolutely recommend them to anyone. The world's manufacturing issues caused a bit of a wait for the doors and windows, but that is not their fault and it was worth the wait. read more

This was my first quote and my final decision for my colonial bay window. From beginning to end, I was more than satisfied with the customer service and my bay window being installed. I highly recommend it. read more

I should have written this sooner....a little over a year ago DeFinis did a very large job for us , two 6ft x 10ft windows & a sliding glass door. From our first encounter in the showroom up to installation, everything was wonderful!!! Very knowledgeable, patient & friendly in the showroom, helping me decide exactly what I wanted. Called me as soon as my windows were in & they were installed within the week, they came on time & did a great job!!!! I am very pleased with my windows & will absolutely use them again & I always recommend them!!!! read more

We needed a sliding door and, after some looking, we picked Definis and Sons. We went to their showroom (their showroom is great!) and Jim quoted us a very good price, he came to our house measure it on a day that worked for us, although we gave him a very short notice because we were also doing some other projects in the house at that time. Then he put the door on a rush order, so we didn't have to wait for several weeks. When it was installed, Junior and his helper did a great job! They were nice and professional, got to the appointment in time and cleaned up after they were done. read more

We needed a new entry and storm door plus windows in three rooms of our house. Two companies with good ratings came to our house, took measurements and within a week sent and emailed us an estimate. One representative told me the doors would be a difficult job. The other company said that hardware was extra and if during the job there was structural damage found, then that would be extra also. We then visited Definis and Sons' showroom. I took a picture of the front doors with my phone, which was helpful. We picked out our doors and side lite window, we were given an estimate right then and an estimate on when the work could be done. We now have a beautiful entryway to our house. The doors are well made, sturdy and have a warranty. It looks better than we imagined and we couldn't be happier. Junior and Cody came took do the installation on the date and time given to us. They knew what they were doing and got right to work, didn't take a break even though it was a very hot day. They were neat and professional from beginning to end. When they were done I asked Junior for an estimate on the windows we wanted done. He took a look, gave me an estimate and I put down our deposit before he left. I liked their work and product that much. There was one adjustment needed on the storm door, I called and Cody came out the next day and made it. I absolutely recommend Definis and Sons windows and doors. read more

Definis and Sons did the most wonderful installation of my new storm door. They did it with so much pride in their work. I was particularly impressed with the way they were able to install covering over some areas that needed painting. I couldn't be happier with the professionalism and confidence in the installation. They cleaned up after the work and left my front door area spotless I would most definitely recommend Definis and Sons for anyone who needs a door installed. read more

I needed to purchase a new bay window and front door. I had a bad experience with another reputable company when I had countertops installed. Sandi suggested a few ideas that would work for me with price and style. I was very hesitant but Sandi seemed very knowledgeable and I went ahead and ordered the window and door. To say that I was very happy is an under statement. Mike Cody and Jim went above and beyond from installation to clean up. You don't find guys like these anymore. Very professional and hard working. I highly recommend this company! read more