May 4, 2026 by WindowRama
A Smarter Upgrade for Your Andersen® Narroline® Windows
If your home still has older Andersen Narroline Windows, you’re not alone. These windows were installed in millions of homes between 1968 and 2013, and while they’ve stood the test of time, today’s homeowners are looking for easier maintenance, better energy efficiency, and modern performance.
The good news? You don’t have to replace your entire window to get those benefits.
This home on Long Island, NY had old Andersen Narroline Double Hung Windows and they were looking for an energy efficient upgrade. WindowRama’s installation team was able to install new Andersen 400 Series Tilt-Wash windows in only a few hours with little to no disruption to the home’s interior.
A Simple, High-Impact Solution
With an Andersen Tilt-Wash Conversion Kit, you can transform your existing Narroline® double-hung windows into modern, tilt-in windows—without the cost and disruption of a full replacement. These conversion kits are specifically designed to retrofit your existing windows, making the upgrade surprisingly quick and straightforward.
Easier Cleaning—From Inside Your Home
One of the biggest frustrations with older windows is cleaning the exterior glass. With the tilt-wash feature, both the upper and lower sash tilt inward, allowing you to safely clean both sides of the glass from inside your home. No ladders. No hassle. Just a simple, homeowner-friendly solution.
No Major Construction Required
-Unlike full window replacements, this upgrade keeps things simple:
-Your existing frame and trim stay completely intact
-No tear-out means minimal mess and disruption
-Installation is quick and efficient
It’s an ideal option for homeowners who want a noticeable improvement without turning their home into a construction zone.
How do you know if you have Andersen Narroline Windows?
What’s Included in the Conversion Kit?
-The kit comes with everything needed to modernize your window’s performance and functionality, including:
-New upper and lower sash
-Balancers for smooth operation
-Jamb liners for improved sealing
-Lock and keeper for secure closure
-A compressible jamb liner also creates a tighter, more reliable seal between the sash and frame—helping improve comfort and reduce drafts.
Serious Energy Efficiency Gains
-Upgrading your glass makes a big difference. The included High-Performance Low-E4 Glass is engineered to perform in all seasons:
–Up to 46% more energy efficient in winter compared to ordinary dual-pane glass
–Up to 56% more energy efficient in summer*
-That means a more comfortable home year-round—and potentially lower energy bills.
Customize the Look to Match Your Home
Functionality is only part of the story. These conversion kits also give you the opportunity to refresh your home’s appearance. You can enhance your windows with:
-Decorative grilles
-Exterior trim options-
-Art glass or patterned glass
Whether your style is traditional, modern, or somewhere in between, there’s a design option to match.
A Cost-Effective Alternative to Full Replacement
If your existing Narroline® frames are still in good shape, a tilt-wash conversion kit offers a practical middle ground. You get the benefits of new windows—better performance, easier cleaning, updated style—without the higher cost of a full replacement project.
The Bottom Line
Upgrading your Andersen Narroline Windows with a tilt-wash conversion kit is one of the simplest ways to modernize your home. It’s efficient, minimally invasive, and delivers real, everyday benefits you’ll notice right away.
If you’ve been putting off window replacement, this could be the perfect solution to improve comfort, convenience, and energy performance—without starting from scratch.