HomeImprovement.Reviews
🪟 Top 5 · 2026📍 Washington, DC

The 5 best window replacement companies in Washington.

Quieter, warmer, and the AC finally keeps up.

Chosen by our review committee · Google ratings as of November 9, 2026 · Companies cannot pay to be listed

Window Replacement Companies at work
1
Windows On Washington
★★★★★ 5.0 · 524 reviews

Old windows leak air, fog up and rattle. The best window replacement companies in Washington measure precisely, install with proper flashing and insulation, and stand behind both the glass and the labor.

  1. 1

    Windows On Washington

    🏆 Best window replacement company in Washington
    ★★★★★ 5.0· 524 Google reviews

    A 5.0 Google rating with 524 reviews behind it puts Windows On Washington in rare company. That is one of the deepest review histories of any window replacement company in the Washington area. Based in Sterling, it takes the top spot among window replacement companies in Washington this year.

    📍 23465 Rock Haven Way #120, Sterling, VA 20166
  2. 2
    ★★★★★ 5.0· 402 Google reviews

    Every one of Old Town Glass And Mirror LLC's 402 Google reviews averages out to a flawless 5.0. That many reviews is hard to fake and harder to keep that high. Based in Alexandria, it lands at #2 on our Washington list.

    📍 244 S Reynolds St Apt 101, Alexandria, VA 22304
  3. 3
    ★★★★★ 5.0· 240 Google reviews

    Urban City Glass holds a perfect 5.0 on Google across 240 reviews. That many reviews is hard to fake and harder to keep that high. Based right in Washington, it rounds out the top three for Washington.

    📍 2210 Wisconsin Ave NW, Washington, DC 20007
  4. 4
    ★★★★★ 5.0· 101 Google reviews

    Prestine Glass Solutions – Commercial door & Glass Replacement holds a perfect 5.0 on Google across 101 reviews. A solid body of feedback for a local window replacement company. Based right in Washington, it rounds out the top four for Washington.

    📍 1235 Pennsylvania Ave. SE, Washington, DC 20003
  5. 5
    ★★★★★ 4.9· 392 Google reviews

    With 392 Google reviews averaging 4.9, Kennedy Glass in DC has earned its place here. That many reviews is hard to fake and harder to keep that high. Based right in Washington, it rounds out the top five for Washington.

    📍 901 R St NW, Washington, DC 20001
How this list was made

Picked by people who read the reviews.

Our review committee researched window replacement companies serving Washington and the surrounding area, read consumer reviews across the web, and settled on these five. We look at how many people have reviewed a company, what they say, and how the company holds up over time. We keep the full recipe to ourselves so it cannot be gamed. Google ratings shown are as of November 9, 2026. No company paid to be here, and none can. More on how we choose →

Before you sign

How to hire a window replacement company in Washington

1

Compare the U-factor and SHGC ratings, not just 'energy efficient' claims.

2

Ask whether it is a full-frame or insert (pocket) replacement, and why.

3

Get the frame warranty, glass seal warranty and labor warranty in writing.

4

Be wary of high-pressure sales with 'today only' pricing.

Good to know

Window Replacement Company questions, answered

How long do replacement windows last?

Quality vinyl or fiberglass windows last 20 to 30 years. Seal failure (fogging) is the usual end of life.

Vinyl, fiberglass or wood?

Vinyl is the value choice. Fiberglass is stronger and holds paint. Wood looks best inside but needs more care outside.

How long does installation take?

A crew can often replace 8 to 12 windows in a day with insert replacements. Full-frame jobs take longer.

For the winners

On this list? Show it off. 🎖️

Paste this on your website. The badge is free and links back to this page so customers can check for themselves.

#1 Window Replacement Company in Washington, DC 2026
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#2 Window Replacement Company in Washington, DC 2026
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#3 Window Replacement Company in Washington, DC 2026
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#4 Window Replacement Company in Washington, DC 2026
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#5 Window Replacement Company in Washington, DC 2026
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