Certified Window Co.

Certified Window Co. FREE ESTIMATES RIGHT OVER THE PHONE… COUNT THE EXACT NUMBER OF WINDOWS YOU HAVE AND WE WILL GIVE YOU AN ESTIMAT…. TEXT OR CALL 703-975-5500. Certified Window Co.

Since 1984, family-owned and operated Certified Window Co. has been the premier vinyl replacement window installation company for Maryland, DC, and Virginia. can improve your home’s look and feel while reducing your energy bills.

Cooler summers, warmer winters, and lower energy costs - without the hours-long sales pitch! Just text a picture of one ...
09/10/2026

Cooler summers, warmer winters, and lower energy costs - without the hours-long sales pitch! Just text a picture of one of your existing windows and the quantity of windows you’ll be needing to 703-975-55002 and we’ll reply with a realistic estimate in under 5 minutes. If that preliminary estimate fits your budget, then we can move forward. It's that simple!

The hardest-working team in hopes you're all enjoying a well-deserved day off surrounded by friends & family! ! ...
09/07/2026

The hardest-working team in hopes you're all enjoying a well-deserved day off surrounded by friends & family!

!

You don't need to sit through an hours-long in-home sales presentation just to get a price. All you have to do is text a...
08/28/2026

You don't need to sit through an hours-long in-home sales presentation just to get a price. All you have to do is text a picture of one of your existing windows and the quantity of windows you’ll be needing to 703-975-55002 and we’ll reply with a realistic estimate in under 5 minutes. If that preliminary estimate fits your budget, then we can move forward. It's that simple!

The Team at Certified Window Co. would like to wish you & yours a safe & happy filled with joyous celebrations of this...
07/03/2026

The Team at Certified Window Co. would like to wish you & yours a safe & happy filled with joyous celebrations of this very special !

Our latest window installation in Oakton, Virginia, is another beautiful success.
06/20/2026

Our latest window installation in Oakton, Virginia, is another beautiful success.

02/07/2026
Stop freezing and replace those old windows with new high-efficiency airtight windows from Certified Windows… 
02/07/2026

Stop freezing and replace those old windows with new high-efficiency airtight windows from Certified Windows… 

The Team at Certified Window Co. would like to wish you and yours a safe and happy and a 2026 filled with health, happ...
12/31/2025

The Team at Certified Window Co. would like to wish you and yours a safe and happy and a 2026 filled with health, happiness, and prosperity!

Address

7910 Andrus Road, Suite 15
Alexandria, VA
22306

Opening Hours

Monday 9am - 7pm
Tuesday 9am - 7pm
Wednesday 9am - 7pm
Thursday 9am - 7pm
Friday 9am - 7pm
Saturday 9am - 7pm
Sunday 9am - 7pm

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