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Business ProfileWindow Installers in Philadelphia, Pennsylvania

Definis and Sons Window and Door Inc.

Listed in Philadelphia 137 reviews(215) 624-7118

Definis and Sons Window and Door Inc.

Definis and Sons Window and Door Inc. installs replacement windows and doors in Philadelphia. Established in 1959, it operates a showroom in Northeast Philadelphia.

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Business Highlights
  • It is a family-run business.
  • Its technicians are fully insured.
  • It warrants and services every product it sells.

Service Area

The Delaware Valley and southern New Jersey.

Active Business Listing

Definis and Sons Window and Door Inc. is one of 12 window installers ProsGrade lists in Philadelphia, Pennsylvania.

Active
Public local listing
Listing details

10 services listed, including Vinyl double-hung windows, Bow and bay windows and Garden windows. Open 4 days a week. 137 reviews.

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

How This Business Compares

How Definis and Sons Window and Door Inc. compares with the other 11 window installers on ProsGrade in Philadelphia, using public Google ratings and review counts.

  • Has more Google reviews (137) than 6 of the 11 other Philadelphia window installers on ProsGrade.

Services Covered

10 services
  • Vinyl double-hung windows12 colors, foam-enhanced frames and custom-made sizing
  • Bow and bay windowsCustom-sized; bow units use fusion-welded virgin PVC and reinforced aluminum frames
  • Garden windowsCustom-sized, with a sturdy Exolite plant shelf
  • Vinyl slider windowsThree colors; custom-fitted to the opening
  • Vinyl casement windowsFully reinforced frames; 90-degree opening
  • Basement windows
  • Steel entry doors
  • Security storm doors
  • Aluminum storm doors
  • Sliding patio doors

Reviews

What customers say

Customers praise careful, professional installation, with one highlighting a spotless work area and craftsmanship. One customer found appointment scheduling slower than expected; another valued the showroom discussion about options and home-specific recommendations.

Customer Reviews

adam smith

Definis & Sons recently replaced 7 windows in my home, and overall I’m very happy with the results. The crew was professional, careful with their work, and the finished windows look great and function perfectly. The installation itself was neat and tidy, and they showed clear attention to detail throughout the job. The only area that could be improved is the time it took to get the appointment scheduled, which was a bit slower than I expected, but compared to the great price, service, professionalism, communication, and workmanship, this is a minor issue. Taken all together, my experience was very positive, and I’d gladly recommend them for quality window replacement.
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Kelly Barasha

Highly recommend this company! I needed a new front door and windows. From the start, everyone was SO kind and helpful! I loved being able to go to the showroom, discuss different options with them, and receive the best recommendations based on my home. When it was time for the installation dates, they were timely and so professional. Junior, Cody, and his crew of men are the best! & their prices were the BEST out of everyone I received a quote from. & the quality of the front door, storm door, and windows is excellent! Don't look anywhere else if you're looking for new doors and/or windows- I can't recommend Definis and Sons enough!
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Jim F

Our experience with the Definis and Sons team was excellent. The entire process, from measurement to ordering and installation, was seamless. The windows were installed promptly and with great attention to detail. Junior skillfully resolved an issue with the previous window installation and ensured the new ones were fitted correctly. We are very pleased with the quality and solidity of the windows, and we haven't encountered any problems thus far. We particularly appreciate that it is a family-owned business, which is important to us. We anticipate placing more orders in the future. Thank you, Definis and Sons!!!!
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Adam K.

Junior and his team did an outstanding job installing our two double-hung windows. Junior was not only friendly but also incredibly meticulous in his work. They left the area spotless, and the craftsmanship was impeccable

shirley johnson

I just want to say Thank You to Junior & his crew for the 7 windows they just installed this morning (within 2hours). They were all courteous, very nice & did an absolutely wonderful job & also at cleaning up & showing me how to clean my new windows with the tilt in feature. I highly recommend Definis & Son for all your window & door needs. You can’t beat their prices. We also had a storm door installed a few weeks ago by them & yes it was a bit pricey, but it’s so much heavier then the others from Home Depot etc. & I love it. The wind took the other 3 we had, which were cheap & didn’t hold up. I will most certainly be back for my picture window! Very satisfied! Thank You again!
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Frequently Asked Questions

Does Definis and Sons offer a free in-home estimate?

It offers a free in-home estimate with no obligation.

Can Definis and Sons' double-hung windows be cleaned from indoors?

Yes. Newer double-hung styles have tilt-in sashes, so the exterior glass can be cleaned without going outside.

What do Definis and Sons' bay-window warranties cover?

For bay windows, the company says its full warranties and workmanship guarantees cover the entire window, glass, vinyl and labor.