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Adler Windows

About us

Adler Windows is a New York based supplier and expert installer of custom windows and doors. A fully-licensed, insured general contractor specializing in window installation and service, Adler Windows has serviced the New York area for over 20 years. Our experience is wide ranging, from architecturally complex wood windows found in landmark buildings to vinyl and aluminum thermal break replacement windows. The Adler Windows philosophy is to provide the same attention and expertise to each project we undertake, whether for a single apartment or an entire building. Our service department is an important component of our overall program. It consists of a fleet of trucks on the road to quickly and expertly respond to any window repair emergency.

Business highlights

36 years of experience

Services we offer

NYC Landmark Preservation Commission Window Replacement Applications, Window Repair, Window Replacement, null

Amenities

Free Estimates

Yes

Reviews
3.05 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
40%
4
0%
3
20%
2
0%
1
40%
Showing 1-5 of 5 reviews
Max T.
May 2025
1.0
$2,600,000
It took over half a year for one balcony door and six windows to be installed somewhat properly. From the first day of the initial installation, there were mistakes being made. After they finished on the first day, I literally had to go chasing after them and make them come back because they missed entire areas around the windows inside and outside where they never applied any caulking to seal them. The only way I can describe their work is inconsistent, sloppy and subpar. The workers could not care less if the job is done well and literally told me they get paid by the hour so they really don’t care. Every time they came to try to repair the work that they had done they would inevitably make things worse. They caused significant damage to my balcony because the workers were too lazy and couldn’t care enough to put down protective material where they were staging and unwrapping the windows. And then it took months for them to reimburse me for the material let alone the labor to fix the damage, which is still a fight in progress At one point, the manufacturer had to come and make adjustments to every single window that was installed to prevent cold air from in getting in. These workers that came were the most disrespectful and unprofessional workers I’ve ever experienced in my life. They would loiter in the hallways and at one point made my girlfriend so uncomfortable that she started refusing to leave the apartment by herself when they were on my floor because of the way they would stare at her and make comments to her. I cannot recommend this company to anyone, I would simply say if you decide to use them then make sure that someone is there overseeing every single thing they do. Do not trust them to do the work properly themselves without someone right behind them looking over their shoulder the entire time. If you don’t believe what I’m saying just look at the pictures because they speak for themselves. At the end of the day, they still did not finish the work 100% and I will now be hiring another contractor to clean up the mess they made and finish this project properly

Jonathan W.
Dec 2014
5.0
Yes, I recommend this pro
$11,000
unknown

STEVEN W.
Nov 2014
1.0
After the normal bidding process in 2012 my building management selected Adler Windows to replace the windows in our 150 year old coop townhouse.  For several years my bedroom was uncomfortably cold and other residents had similar window issues.  The original windows were very old and leaked air causing a very cold night to produce uncomfortably low temperatures in that room.  This spring I decided to remedy the situation on my own by additional insulation as the window replacement by Adler windows did nothing to improve the situation; perhaps the room was even colder.
I hired a contractor and spent $9,000 to insulate a wall and move a radiator and got virtually no improvement in the condition.  I then called in my own handyman to place a vacuum seal over the windows to stop the air leaks.  After setting up to do the work I was called into the room to see what he had discovered.  He showed me how the window did not reach the top of the frame and he could put his hand through the opening!  Either the window was measured incorrectly or the windows were manufactured incorrectly--either way the problem should have been Adler Windows problem, not mine.  I had finally discovered the cause of the continuing cold situation that had made the room inhabitable on two freezing nights last year and barely liveable on the other nights.  Once my handyman closed off the open area with insulation material the room was perfect.  What is so strange is that Adler could have done exactly what my handyman did and I never would have known there was a problem!  Either the installer was told to just forget it or the installer on his own left the gap in the installation; either way not the proper way to handle the situation.
Unfortunately I never discovered the cause of all my discomfort and expense until long after the replacement had been fully paid for.  A recent call to Adler by our managing agent produced great "surprise" by Adler and a promise to investigate the situation.  I declined their offer to have them come and check the work as I have no confidence in their services

James M.
Oct 2013
3.0
$60,000
many delays, installation problems not resolved promptly, some still outstanding after 9 months
lack of follow up
Response from Adler Windows
"Hi (member name removed), Which project? We don't work in Florida. Did we complete a project for you in NY. I searched our records and your name does not come up as a client."

Ross A.
Jul 2009
5.0
$10,000
Adler did a great job. They were very knowledgable about their products and made informative suggestions. They also helped us with the Landmark filings. I would definetely recommend Adler Windows to anyone looking to replace their windows.

Licensing

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Adler Windows is currently rated 3.0 overall out of 5.

Yes, Adler Windows offers free project estimates.

No, Adler Windows does not offer eco-friendly accreditations.

No, Adler Windows does not offer a senior discount.

No, Adler Windows does not offer emergency services.

No, Adler Windows does not offer warranties.