High-Quality Replacement Windows in Montclair, NJ

Improve energy efficiency, comfort, and style with professional window replacement services from Windella Windows & Doors. Serving Montclair, New Jersey, and the surrounding communities, we specialize in using premium Pella replacement windows and providing expert craftsmanship. Every window replacement project begins with a free in-home consultation, so you can explore options that match your home’s architecture and your performance goals.

Customize Your New Windows

We proudly install some of the best replacement windows available, with frame choices including:

Vinyl windows – affordable, durable, and low-maintenance
Wood windows – classic beauty and natural insulation
Fiberglass windows – strong, weather-resistant, and long-lasting

Choose from a wide range of window styles, such as double-hung, sliding, awning, bay, bow, casement, and custom windows to fit your exact needs. Whether you’re doing a standalone window replacement or a full window and door replacement, our team ensures seamless installation and superior results.

FAQs About Replacement Windows

Below are answers to frequently asked questions (FAQs) we receive from homeowners:

Why should I replace my windows?

Old or damaged windows can lead to drafts, high energy bills, and decreased curb appeal. New replacement windows improve insulation, boost home value, and create a more comfortable indoor environment.

When should I replace my windows?

Common signs include condensation between panes, difficulty opening or closing, noticeable drafts, or rising energy costs. Additionally, if your windows are over 15–20 years old, it may be time for a home window replacement.

Are Pella windows a good choice?

Yes. Pella replacement windows are known for their pristine quality, energy efficiency, and variety of styles and frame materials to match any home.

Begin Your Window Replacement Project

Contact Windella Windows & Doors today to schedule your free in-home consultation in Montclair, NJ. We’ll help you find the best solution for your replacement window and door needs.

Get a Quote

See What Our Customers Have to Say

Greg and team at Windella are awesome! Greg is extremely helpful in explaining options and talking through the process, transparent on pricing, and delivered and installed windows and doors right on time. Would recommend Greg and his team to anyone looking for new windows and doors.

Matt P.

We had an all around great experience with Windella. Greg helped us find the right window option for our whole house replacement and was super helpful throughout the process. The installation team was excellent and our old house was treated with expert care and craftsmanship. Everything was smooth sailing from start to finish. We couldn’t be happier!

Sara K.

I couldn’t be happier with the work. I had all the windows in my house replaced by Greg and his guys. The entire process was low stress and the price was great. The installers did some of the cleanest work I have ever seen. Greg was a professional from beginning to end. I’d highly recommend him for any window and door work.

Joseph O.

Huge thank you to Greg and his team! They replaced 22 windows and the front door. I cannot recommend them enough! We placed our order in mid January, and I am so pleased that on March 9th, the job is complete. Greg was wonderful and easy to work with. The installation team was top notch. They worked quickly but diligently and neatly.

Mary-Ellen G.

I highly recommend Greg and Windella. They completed a job for a very large picture window ahead of schedule, on budget, were easy to work with, kept everything clean, and I love the result! After my fantastic initial experience I went on to have Greg and Windella add two additional large modern windows. Again, the job was done earlier than expected and on budget. They delivered high quality results.

Jonathan H.

Greg and his team replaced our old back kitchen doors with a new Pella slider that looks fantastic. He was easy to work with and knowledgeable when walking through our options. His installation team was very professional, diligent and added additional touches on the interior to match our surrounding features. I would absolutely recommend his services.

Ryan M.

Thank you Greg for quick, courteous, excellent service. Greg came to fix an older sliding door which Pella was no longer willing to service. Door is now like brand new. Thank you for your willingness to show up for a small job. We'll be sure to remember you when it's time to replace and we are happy to recommend you.

Kathy D.