The response was very quick. Made my appointment with the owner. The owner's son did the estimate…read moreand measurements. No hard sell; just "this is what you need, this is what we got, this is the price." No nonsense. No pressure. The install team works for the company, not a sub-contractor. No multiple levels to wade through. That was a selling point for me. The team was fast, efficient, and friendly. The job looks great. Super happy with the outcome. Very highly recommend

The Fisher Window crew,Polo and Wilken just finished installing 11 windows in my home. They were…read morevery friendly and did a fantastic job, and a cleaned up as if it were their own home. Thank you Jeff, Ricky, and Kevin. BRAVO!!! Jerry A

I had O'Sullivan Installs put siding on my house almost 3 years ago. Shortly after install a few…read morepieces began to warp. I contacted Tim (owner) to report the issue. He told me he would send someone out to match the prices to replace the warped pieces. The exact lot cannot be matched and Tim told me that it would be a warranty issue with the manufacturer. He told me this about a year ago! It is ridiculous! Tim is hoping I forget about this while keeping my money and not standing by his promise. I would not recommend using this company.

I have hired O'Sullivan to replace 10 windows in my home and re-side the entire house. Siding work…read morehas not yet started but last week the windows were done and I just had to write a review on the spectacular work O'Sullivan has done. Everyone I have worked with so far--Brian, Melissa and Tim--have provided outstanding service and support. The windows look incredible. I thought I was going to miss my old wood (super inefficient) windows and that vinyl was somehow going to look cheap but it couldn't be further from the truth. From a windows perspective, they only use quality products. The windows look incredible from both the inside and outside, and our giant picture window is a statement piece in our living room. I especially want to make a shout out to the window install crew, Vlad and his team. They were super professional, arrived and were done on time, and best of all, I can honestly say the house was as clean, if not cleaner than I had left it. Both my husband and I were expecting to come home to a construction site and that could not be further from the truth. Thanks guys! Can't wait for my new siding!

You ever have a basement window just....sporadically shatter for no apparent reason? Well,…read moreevidently this is just a thing that randomly occurs in this part of town. The last time I had glass shatter spontaneously was back in '24 when our winter storm door screen was completely pulverized by the summer heat, it seems (Pro-life tip: swap out your storm door screens in the summer with mesh ones). On the back of that unforeseen devastation, out went my mass inquiries to all the local shops servicing the Nashua area. Out of maybe 5 (?), 3 responded almost instantly. One sent a quote so high, I was half tempted to reply and ask if I could have some of whatever they were smoking. Another replied with what seemed to be a promising rate, but there was one problem. Their communication was severely intermittent to the point where they inexplicably ghosted me faster than a recruiter responding to a job applicant. Ultimately, I settled on Good Window Works. They offered a fair quote, were easy to get ahold of, and even provided a COI statement as per the request of our housing board. For those unaware, a COI is a Certificate of Insurance. Basically, it's assurance to the board that the contractor in question is insured to complete the job without creating a liability if they, say....jam their thumb beneath a tack hammer or something. With those formalities out of the way, the job was simple enough: Replace the half of the basement window that abruptly disintegrated. All in all, the job took roughly 2 hours. In the end, the window he installed was so transparent, it looked like there was no pane at all in the frame. But no--the glass was just THAT pristine! I don't say this often, but....experiences like these are what I love most about being a Yelp writer. So rarely do I get to be in the position to not only promote another hard working local business, but also pose as the microcosmic advertising vehicle that just might serve as the prompt some very fortunate individual needs to go, "Yeah, I'm hiring this place to work on my house". If you're wondering whether you should hire these guys for your next installation or repair job, the answer is likely yes. Good Window Works is worth 5 window panes clearer than thin air out of 5.

I had a window with a broken pane on the third floor attic. I called several places, including one…read moreI've used for years for glass and screen repair. Only Good Windows responded and sent someone out to do an estimate. They just finished the job. The original estimate was done from the ground, however when the technician was able to get the unit out of the frame, (This is an old style window), we both saw that additional work had to be done. The tech did the work and did an excellent job. It was only a bit more over the original estimate, but quite reasonable. I highly recommend Good Window Works.

The response time for emails / messages was super quick and if they could not get back with full…read moreanswer there and then , they would still message to say they would be in touch later . As my issue was window replacement , after they had looked at it , due to the type & size the estimated price had to increase but they still gave me a good price and would have fixed the sash for me to reduce the price except it had been thrown out . The window had to be ordered & they were in touch with updates along the way which is very important as I'd never used them before and had paid 50% deposit . They were very very professional & polite & easy to have there doing the work when the work was being done .

Juan did a great job installing a door with new framing and new locks, etc,. He fixed a few things…read moresomeone else had installed that weren't level and did a few other minor handyman type services and I couldn't be happier with the results. He pays attention to detail and was very responsive and dependable. I will use him again for my next project!

Rob did extensive work for us in 2011 and is doing more now. His previous work included blow-in…read moreinsulation for exterior walls of our big old historic registry home, and installing new doors + insulation w/ vapor barrier in a new basement-level storage room. Both the work & service were terrific (we especially appreciated his helping us navigate the complex Mass Save reimbursement process). We invited Mass Save back recently (for windows), and the inspector said he'd never before recommended "no insulation upgrades" for an old house, but he did for ours since Rob's 15-year old upgrades were so impeccable! Moreover, the inspector actually asked to photograph the tricky basement area to use as exemplar of an ideal installation. Finally, this is just icing on the cake, but you couldn't find a nicer, smarter, more conscientious & honest guy to have around the house.

Rob and his crew were amazing in every possible way. They took the time to understand what I was…read moretrying to accomplish beyond replacing my windows and doors, and the final product shows. The work they did was impeccable, and they were very thoughtful, considerate and professional throughout. I can't say enough good things about them and the work they do. I look forward to working with them again in the future, and I would recommend hiring Rob and his crew without reservation.

We had a screen break on a set of older, but not out of date windows. The woman who answered the…read morephone talked me through the challenge I was facing and offered up recommendations on how to fix. She didn't need to do this, or spend time with me trouble shooting...but she did. If I ever have business to do in the future they are at the top of my list!

I want to echo another reviewer's experience - we have 2 windows that wouldn't stay open and we had…read moreassumed the only option was to replace them. I called and Berge picked up, he explained that they don't do window repairs but if I were in front of the windows he could walk me through how to identify the problem, possibly fix it myself or find a handyman to fix it. When I got in front of the windows he talked me through how to take the windows out of the track, identified that the "shoe" wasn't attached and that's why they won't stay open. After I got off the phone with him, I followed his instructions to get the shoe unstuck from the bottom of the track and managed to get them reattached to the windows, and now they both stay open! So incredibly helpful! If we needed to replace those windows we would definitely have gone back to Berge for it.

Did a really nice job replacing an exterior door. Trim was done nicely. Cleaned up pretty well. I'd…read moreuse them again. Price was similar to other quotes I got.

I cannot say enough great things about Joe and his team. From day one Joe was very professional,…read morepunctual and responsive. Windows were over 60 years old and had to be replaced asap! Joe explained the whole process from start to finish and also provided recommendations for external trim - game changer! His pricing was consistent if not a tad cheaper than six other quotes I got. His crew covered everything with plastic (Dexter vibes) to make sure furniture did not get damaged. They also cleaned every day before leaving, not just my unit but also neighbors windows and the street - wow! I could not recommend Boston Doors and Windows more! This was my first "big project" experience and I could not be happier! Thank you thank you thank you!

Three sons finished our attic for us. From start to finish, they were professional, kind and…read moresincere in their work. They truly became like family by the end of the project and we are so very grateful to have found them. Like with any construction project, there were unexpected things along the way, and they handled them with care and attention as well as clear communication. I felt like they treated our home as they would treat their own. We felt we could trust them to be honest and fair throughout the entire process and that was priceless. I would highly recommend their services for all your Home renovation needs! We couldn't be happier with our investment and with the experience we had working with them. The attic looks fantastic. My two year-old has seen their truck in the neighborhood and said "When are the guys coming back to work on the house?" :)

3 Sons failed to pull the permit for an exterior door replacement despite having it added to the…read morecontract. They also installed the door incorrectly. The door jamb was not flush with the drywall by 3/4". According to the manufacturer of the door, Thermatru, this was an incorrect installation. Paul Nutile, the owner of the company, was very unprofessional in all of his communication and refused to fix the poor install. When I took him to small claims court, he cursed at me in the courtroom like a child.