400 SERIES CONVERSION KITS FOR NARROLINE® WINDOWS

400 SERIES CONVERSION KITS FOR NARROLINE® WINDOWS

400 SERIES CONVERSION KITS FOR NARROLINE® WINDOWS

Narroline® double-hung window conversion kits offer a smart solution for upgrading Andersen windows manufactured between 1968 and 2013. These kits transform your existing units into modern tilt-wash double-hung windows with High-Performance Low-E4® glass — all without removing the frame or modifying interior trim.

As a Premier Certified Contractor for Andersen, ARDMOR Windows & Doors is trusted to deliver expert installation that aligns with the manufacturer’s specifications. This certification confirms our deep knowledge of Andersen products and ensures that every conversion is completed with precision, reliability, and long-term performance.

KEY BENEFITS

Improved Energy Efficiency
Each conversion kit includes High-Performance Low-E4® glass, which offers up to 45% better energy efficiency in winter and 56% in summer compared to standard dual-pane glass.* This upgrade helps reduce heating and cooling costs year-round.

Convenient Tilt-Wash Design
The tilt-wash feature makes routine cleaning easy by allowing access to both sides of the glass from inside your home—no ladders or exterior access required.

Customizable Style
Enhance your window’s appearance with optional upgrades such as decorative hardware, grille patterns, exterior trim, or specialty glass including art and patterned styles.

Hassle-Free Installation
Designed to fit your existing opening, each kit includes new upper and lower sash, balancers, jamb liners, and hardware—no need to alter the window frame or interior trim. This means faster installation with minimal disruption to your home.

HOW TO KNOW IF YOU HAVE A NARROLINE WINDOW?

If your windows have these four features, they’re compatible with the 400 Series tilt-wash conversion kit.

DOUBLE-HUNG CONVERSION KIT OVERVIEW

*Values are based on comparison of Andersen® double-hung window conversion kit SHGC to the SHGC for clear dual pane glass non-metal frame default values from the  2006, 2009, 2012, 2015 and 2018 International Energy Conservation Code “Glazed Fenestration” Default Tables.

Google Reviews

ARDMOR Windows & Doors
Based on 1049 reviews
Oksana P.
I would highly recommend to choose this company for the service they provide!!! Very well organized. It was a pleasure to work with them from day one. Every person I’ve dealt with was professional, polite, punctual and very nice. The windows installation process was fast, smooth and easy to handle. The high quality work was performed! I’ll recommend Ardmor to everyone I know! I have nothing else to say but THANK YOU ARDMOR TEAM VERY MUCH FOR EXCELLENT JOB!!!
Oksana P.
Bob A.
This is our first time we have used ARDMOR and I’m extremely satisfied with their work. We had a window with a small crack which allowed the gas inside to escape and turn the window cloudy. I contacted them and they came out and reviewed the necessary work and sent me a quote within hours. The work was scheduled about three weeks ago and they gave me several updates to remind me of the scheduled work. They came on time and completed the job in about 20 minutes. Very professional and respectful of the interior and exterior house area. The replacement window looks great! I would highly recommend this company. The price was very fair and the quality of work was excellent!
Nicholas Y.
I replaced my back door with a sliding door. Overall really good experience from the quote to the installation. Installation took one day and they cleaned up well.
The only issue is when they installed the interior drywall to surround the new door. Most of the pieces did not match up to the current drywall (too thick or thin), broken pieces were used, and there were big gaps and a few nails sticking out. I was aware that they were not going to finish it completely but this just seemed sloppy.
Other than that, no complaints!
Rachel R.
Ardmor Windows is a well organized and efficient business from estimates to installation. We had our second set of replacement windows put in today. Our installers worked tirelessly and completed the task promptly. Cleanup was thorough and the improvement in room temperature is already quite noticeable.
MG L
I was looking for a company that would replace glass for multiple windows that lost their seals and the windows fogged up. The entire process from the estimator and the guys completing the job was seamless. The guys who replaced the glass were very courteous, professional and efficient. Pricing was fair and competitive. Would recommend!
Nancy P.
We have had Ardmor replace two custom windows and the glass for many windows, ruined by extreme sun. They are pure professionals. The crews sent for each of the three jobs were absolutely great. We needed a bit of custom woodworking done to replace two large custom windows. The crews were meticulous and had exceptional carpentry skills. Our salesman, Todd, was great working out the best solutions for our needs. We recommend this organization fully.
Genevieve V
The quality of the work was excellent. The team put up plastic and kept all the dirt and construction dust minimized to the rooms they were working in. The trim around the windows was beautifully done and really looks fantastic.

The customer service before the project started, when we were scheduling, was a little bit of a rough start. However, once the work started it all went very smooth.
Sonal
This is the second time I have used them. Their staff is polite, pleasant and knowledgeable in their craft. This time I had them replace two windows. They make appointments and show up on time. Clean after the work is done and a separate inspector will come and check the work. They are my go to guys for windows and door.
I wish they were doing more things than windows and doors.
Jonathan C.
Professional installers who were very respectful and efficient, who obviously take pride in their work. Plus great quality glass. Since our windows were still good in good shape, we were able to order glass replacement. A great way to save money and spruce up our home. Very pleased we contacted Ardmor Windows.
Heather C.
Ardmor did great work inside and out! The doors are keeping out drafts while looking good. The team was knowledgeable, clean, and polite and did great work in a tight space.
Krishnan S.
The end to end process was very well managed and executed. Very professional and highly recommended service. The work is impeccable. I'm wondering why did we wait so long to get this done. Right from making an appointment for survey to messurents and custom ordering the door including online quotes and payments through a portal is all well managed. Already thinking of our next project where I can engage their services again.
Ennis S.
They deliver! Window sill rot removed and fix applied. Team very efficient. Explained steps for repair
Veronica H.
Ardmore Windows and Doors did a fantastic job with my entry door. I am very pleased with the quality and attention to detail that their team provided.
Saad E.
Great quick, efficient and quality service. Would highly recommend to anyone who needs to repair their windows.
Jeff D.
Armor W&D were great to work with start to finish. During the sales discussion they happily answered my questions, were attentive and quoted multiple options. The office folks were warm and accommodating when coordinating the order, payment, and scheduling. The installers were polite, engaged me with finishing options and did clean timely work. I would refer the folks to anyone looking for window and door services.
Michael R.
We got a custom sliding door for our deck and the fit and finish is great. The only negative I have is that it took about a month and a half from the time I sent my deposit and signed the contract to when we actually received the door. The company was not super proactive in providing updates either. I had to call multiple times to get an update. Other than that, it was good.
Juan P.
We used Ardmore Windows and doors recently and they installed new bow windows and a new sliding glass door with a screen door for us.
They were on time, clean and professional. The sliding door lock needed to be adjusted and they did it quickly. Thank You.
Halohits 1
Quick and easy to schedule appointment. Call center and scheduling department were due diligent with contacting me about time changes which was convenient for me and my schedule. Workers were fast and efficient with installing a custom sunrise window and clearing out all the remnants without leaving a mess. Great experience. 5 stars
U. Annette S.
The workers Jacob and Petro were professional and efficient. They explained their part in the installation and made a few modification in order to complete the job. Plus they cleaned up as they worked Very satisfied!
al O.
We had Ardmor replace 3 large triple pain windows, a patio sliding door and a trapezoid window.
They also repaired numerous Andersen windows in our 35+ year old home over the past few weeks.
The Ardmor team’s work was impeccable. They were very though and performed a high, quality job. Also, they were very respectful and protected our home during the work.
The installers also effectively communicated their estimated arrival times which was appreciated.
I would highly recommend them
Natasha K.
We’re very happy with the new windows and patio doors installation! The team was professional, punctual, and paid great attention to detail. The installation process was smooth and efficient. They truly exceeded our expectations, and we highly recommend ARDMOR
to anyone in need of window services. Thank you for a job well done!"
J D.
I contacted Ardmor to replace a multiple crack living room bay window. On my first appointment they sent someone out to look at the job so that they could order the glass. They informed me that they would contact be for installation once the glass was received. About a month later I was contacted to set-up the installment appointment. I set my appointment for the following week and my installer arrived early and got straight to work. The installer completed the work with in the time period that I was given. After the installation He cleaned the window and the area around the window. I was very pleased with the results and would call them again for any window need, I also am thinking about using them to replace some of my doors. Also, I thought that their price for the job was reasonable.
Marilyn W.
Alex was a terrific technician. He arrived on time to replace my cloudy front window. He was neat, quiet, polite, and the new window looks fabulous.
Highly recommend!
Marilyn W.
Alex was a terrific technician. He arrived on time to replace my cloudy front window. He was neat, quiet, polite, and the new window looks fabulous.
Highly recommend!
Taylor J.
After trying multiple window companies, Ardmore was able to help me with my project for a fair and reasonable price! Their schedule was flexible and worked well with mine, and they were prompt in their service, delivering for me exactly what I asked for. I highly recommend!
Leila G
Ardmor did a fantastic job on replacing and repainting the wood on our bay window. Looks completely new! Everyone was friendly and professional each day.
Eddy V.
My experience with Ardmor was a very good and satisfactory one.
From the guy who came to measure the double pane glass on the Bayside window to the Installers, they showed respect to us and to o ur home and did a perfect job.You can only tell becase the new glass is so clear! Does not look like anyone worked there. We are
Completely satisfied and will call them to replace the glass on the side of the house in a few months!
Eddy from Ridgefield New Jersey
Perry W.
ARDMOR was great. They were able to measure the windows, then give an estimate. Once accepted, they removed the screens, rebuilt them at my place, then put them back in. They used Anderson screen material- which is about the best. Great job!
Frank S.
Alex showed up at 12:10 pm and fixed the window. He was very nice and explained everything to me. Very professional for a young man. Very informative and I would definitely recommend hiring more people like him. I will be recommending Ardmore to all of my friends, family and colleagues.
Great company and professional attitude
Bandu V.
We got 4 windows and handle replaced. Service was quick after measuring and installed in very professional style. Andrii & Daniel met even harder goals. This business is recommended for many home owners. Thank you.
Linda H.
Great support with selecting best sliding glass door to meet my needs. Anderson door completely met my expectations. The installation team was very experienced and professional; they took great care in completing the installation, carefully working in my home, and cleanup afterwards including removal of all refuse. Couldn't be more satisfied.
Theresa T.
Excellent work!! I had the glass in my patio door replaced because it had moisture in between the glass panes and started to have a gray look. The two gentlemen that came out and did the installation were very professional and on schedule. They took the door off, removed the old glass and cleaned out all the old compound. They also made sure that it was all cleared out before installing the new glass and new compound. Don’t let other companies tell you, you need a whole new door… that’s not true…. I am so happy I found Ardmor… my door looks brand new….and for a fraction of what a new door would cost… Thank you Ardmor your works speaks for itself…
G O.
🏆 Alex was fantastic! He was so considerate, personable, and very respectful of my home. The work was done efficiently, thoroughly, and without any mess or noise. 🤫 My new replacement window sash matches perfectly with the other windows!✨ A wonderful experience. 💪Alex is a true professional with great communication skills.. if I ran a business I would even try to hire Alex away from Ardmor! 🙏Thank you!!
Jill B.
Armor did a fabulous job with my front door replacement. The planning process, scheduling, and installation were all very smooth. The customer service was outstanding throughout. The team who did the installation went above and beyond. I would absolutely use them again for future projects!

Free In-Home Consultation

We are passionate about resolving window issues for our customers. In order to study the problem in detail and advise the best strategy for a solution, we are happy to inspect the situation on-site at your home. The free in-home consultation allows customers to…

  • Fast and efficient consultation sessions.
  • Onsite inspection of your windows.
  • We do not require all decision-makers to be present.
  • Select your favorite style and color windows

Many consultation requests require customers to send digital images of the project.

OTHER BRANDS WE REPLACE

WE OFFER FINANCING

FINANCING OPTIONS

While updating or replacing your windows or doors offer great benefits, we understand that they’re also big financial undertaking. That’s why Ardmor, Inc. offers flexible financing options tailored for your needs.

  • NO MONEY DOWN
  • 0% FINANCING with Minimum Payment

VIDEO TESTIMONIALS

ARDMOR ADVANTAGE

We can help elevate your specific window or door issues and provide you with the best and most affordable solution that works. Ardmor provides you with the following advantages:

  • LICENSE & INSURED

  • FACTORY CERTIFIED PRO’S

  • ACCURATE QUOTE & PRICING

  • WIDE ARRAY OF BRANDS & OPTIONS