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5.0
6 reviews

Provia doors

Sammy L.

They were very professional. They never rushed. They worked very precise and took their time to get the best fit for my doors because the house frame was off a little. The doors are great. I have a working storm door. Highly recommended!!!

O'Sullivan Installs

Thank you for the kind words. We're happy you're enjoying your new doors.

quick and courteous service

marie b.

I am very thankful and appreciate the help and concern shown to me by Tim and his employees. A large piece of home siding had gotten loose and was hanging down from the backside of my house. I had called Tim's company for advice or a recommendation as I was worried an impending storm might make matters worse. Tim was kind enough to have his men stop by. His men reattached the siding and also made sure the piece was secure. Tim and his men were so very helpful and courteous in solving my problem. I'm very thankful for all their help.

Best experience so far; good windows

Andrei O.

5 double-hung and 2 sliding windows were replaced in my home by O'Sullivan Installs. I looked over a number of different businesses before hiring them, but O'Sullivan Installs offered the best value. The quote procedure's professionalism and simplicity amazed me. There were no needless upsells, pressure tactics, or hidden prices. The representative answered all of my inquiries and provided detailed explanations of everything. It was a welcome difference from the typical sales and marketing ploys I've seen used by other businesses. As promised, the job has been scheduled. On the hottest day of July, the installers did a fantastic job. They were competent, kind, and professional. Now, the temperature and noise level are different, and I can sense it. I am very happy with the quality and performance of the products. I would highly recommend O'Sullivan Installs to anyone looking for a window replacement service.

Great windows, great service

Harry C.

We had 5 windows installed last year, and 5 more this year. The windows are great. Had some install issues with last year that were dealt with promptly. Liked the windows & the service so much we came back for more this year. We couldn't be happier!

VERY HAPPY With O'Sullivan!!!

Wendy W.

O'Sullivan Installs just replaced 8 regular windows and 1 large bay window in my home. I am so thrilled with the professionalism and talent of the crew! They are meticulous with every detail, no "cutting corners", and they treated the work as if the home were their own. Tim O'Sullivan is very easy to talk with and visited the house twice to talk about the job - once before to measure the windows to be replaced and next as the new windows were being installed. REALLY glad I hired O'Sullivan Installs! Thank you! I will be getting siding soon and now I know who to hire!

Five Stars All Around

Jennifer C.

This is my third time working with Tim and his team, each project bigger. The job entailed working with another vendor for roofing and they coordinated timing. Covid didn’t help the schedule as supply was limited everywhere but Carol Ann kept me updated on the schedule close to weekly. Once we were scheduled, the crew worked like a Toyota line, following each other’s movements. Anatoli and his team onsite were respectful of the property, neighbors and my going in and out. The detail of the work from the corner trim to the bottom caps was meticulous. Another contractor for a different job commented on how well done the work was! Once the siding and trim was complete, the final details of electrical blocks, garage door seals was finished. I couldn’t be happier with the quality of the work and how amazingly different the house looks (100%+ better). The attention to detail that Tim does through his workers and himself show. I had a separate area of the front sided with ‘rock’ and they made sure that I saw what it looked like by hanging samples up so I could decide. That actually made me change my mind to the better of another color. Tim and Anatoli take constructive input seriously. From my concern of trash cleanup to sending and resending staff to finish the work properly, I appreciated being heard. I’ve recommended O’Sullivans many times and will continue to. Thanks to Tim, Anatoli, Brian, Ken and Carol Ann.

18 Month Interest Free Loan Options

Flexible loan options to fit your needs! Enjoy no interest if paid off within 18 months.

5 out of 5
Out of 23 Google Reviews
Provia
Alside
Alside
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Headquarters O'Sullivan Installs


  • 25 Sullivan Rd Unit 5 North Billerica, MA 01862
  • (978) 234-2297